Nippon Telegraph and Telephone Public Corporation
Patent Applications and Registrations
Patent applications and USPTO patent grants for Nippon Telegraph and Telephone Public Corporation.The latest application filed is for "method and apparatus for evaluating the strength of an encryption".
Company Profile
0.200.0
- Nippon Telegraph and Telephone Public Corporation - JP JP
- Nippon Telegraph and Telephone Public Corporation - Tokyo JP
- Nippon Telegraph & Telephone Public Corporation - both of JP
- Nippon Telegraph & Telephone Public Corp. - JP JP
- Nippon Telegraph & Telephone Public Corporation - all of JP
- Nippon Telegraph & Telephone Public Corp. - Tokyo JP
- Nippon Telegraph and Telephone Public Corporation - Musashino JP
- Nippon Telegraph & Telephone Public Corp. - Chiyoda JP
- Nippon Telegraph & Telephone Public Corp. - Musashino JP
- Nippon Telegraph and Telephone Public Corp. - Osaka JP
Patent Activity
| Patent | Date |
|---|---|
| Method and apparatus for evaluating the strength of an encryption Grant 7,187,769 - Moriai , et al. March 6, 2 | 2007-03-06 |
| Variable division method and variable divider Grant 7,180,341 - Harada , et al. February 20, 2 | 2007-02-20 |
| Optical fiber connector including L-shaped positioning standard surfaces and method of manufacturing the same Grant 5,379,361 - Maekawa , et al. January 3, 1 | 1995-01-03 |
| System for monitoring normality of operation of ATM cross-connecting apparatus Grant 5,280,469 - Taniguchi , et al. January 18, 1 | 1994-01-18 |
| Method and apparatus for testing integrated electronic device Grant 4,980,639 - Yoshizawa , et al. December 25, 1 | 1990-12-25 |
| Optical transmission fiber and process for producing the same Grant 4,975,102 - Edahiro , et al. December 4, 1 | 1990-12-04 |
| Optical fiber cable Grant 4,966,434 - Yonechi , et al. October 30, 1 | 1990-10-30 |
| Bipolar transistors Grant 4,920,401 - Sakai , et al. April 24, 1 | 1990-04-24 |
| Apparatus for fusion splicing optical fibers Grant 4,878,933 - Yamada , et al. November 7, 1 | 1989-11-07 |
| Electrical connectors for leadless circuit boards Grant 4,857,001 - Nakano , et al. August 15, 1 | 1989-08-15 |
| Speech signal processing system Grant 4,850,022 - Honda , et al. July 18, 1 | 1989-07-18 |
| Digital-to-analog converting apparatus equipped with calibrating function Grant 4,835,535 - Shibayama , et al. May 30, 1 | 1989-05-30 |
| Coated optical fiber, fabrication process thereof and fabrication apparatus thereof Grant 4,801,186 - Wagatsuma , et al. January 31, 1 | 1989-01-31 |
| System for detecting a transmission error Grant 4,791,485 - Kuroda , et al. December 13, 1 | 1988-12-13 |
| Dynamic ram cell with trench surrounded switching element Grant 4,786,954 - Morie , et al. November 22, 1 | 1988-11-22 |
| Shaped offset-fed dual reflector antenna Grant 4,783,664 - Karikomi , et al. November 8, 1 | 1988-11-08 |
| Apparatus for quantitative secondary ion mass spectrometry Grant 4,766,313 - Homma , et al. August 23, 1 | 1988-08-23 |
| Image information retrieval/display apparatus Grant 4,742,558 - Ishibashi , et al. May 3, 1 | 1988-05-03 |
| Method of transmitting terminating call signals within a restricted duration and a base station and a portable unit for use in the same Grant 4,736,461 - Kawasaki , et al. April 5, 1 | 1988-04-05 |
| Video/audio information transmission system Grant 4,734,765 - Okada , et al. March 29, 1 | 1988-03-29 |
| Wireless reception system Grant 4,726,064 - Kishi , et al. February 16, 1 | 1988-02-16 |
| Optical connector ferrule and process for production thereof Grant 4,722,584 - Kakii , et al. February 2, 1 | 1988-02-02 |
| Low loss and high speed diodes Grant 4,720,734 - Amemiya , et al. January 19, 1 | 1988-01-19 |
| Space diversity reception system having compensation means of multipath effect Grant 4,710,975 - Okamoto , et al. * December 1, 1 | 1987-12-01 |
| Water-blocked optical fiber cable Grant 4,703,998 - Uchioke , et al. November 3, 1 | 1987-11-03 |
| Submarine optical fiber cable with dam means Grant 4,684,213 - Ishihara , et al. August 4, 1 | 1987-08-04 |
| Optical fiber Grant 4,679,899 - Kobayashi , et al. July 14, 1 | 1987-07-14 |
| Method of transmitting terminating call signals within a restricted duration and a base station and a portable unit for use in the same Grant 4,679,244 - Kawasaki , et al. July 7, 1 | 1987-07-07 |
| Pager receiver comprising a message detector energized only at pertinent time slots Grant 4,668,949 - Akahori , et al. May 26, 1 | 1987-05-26 |
| MIS variable resistor Grant 4,665,423 - Akiya May 12, 1 | 1987-05-12 |
| Diffraction grating position adjuster using a grating and a reflector Grant 4,656,347 - Une , et al. April 7, 1 | 1987-04-07 |
| Method of manufacturing semiconductor device with MIS capacitor Grant 4,645,564 - Morie , et al. February 24, 1 | 1987-02-24 |
| Electric power supply circuit capable of reducing a loss of electric power Grant 4,644,458 - Harafuji , et al. February 17, 1 | 1987-02-17 |
| Optical fibers coated with modified 1,4-polybutadienes Grant 4,639,080 - Kimura , et al. January 27, 1 | 1987-01-27 |
| Analog signal measuring apparatus Grant 4,638,185 - Kobayashi , et al. January 20, 1 | 1987-01-20 |
| Method for the pretreatment of a substrate for ion implantation Grant 4,636,280 - Nakai , et al. January 13, 1 | 1987-01-13 |
| X-ray source and X-ray lithography method Grant 4,635,282 - Okada , et al. January 6, 1 | 1987-01-06 |
| Interference wave detection circuit for use in radio receiver Grant 4,635,298 - Kage , et al. January 6, 1 | 1987-01-06 |
| Digital frequency divider suitable for a frequency synthesizer Grant 4,633,194 - Kikuchi , et al. December 30, 1 | 1986-12-30 |
| Electronic circuit capable of stably keeping a frequency during presence of a burst Grant 4,633,510 - Suzuki , et al. December 30, 1 | 1986-12-30 |
| Bidirectional communication system of a two-wire bus comprising an active terminator Grant 4,631,721 - Ono , et al. December 23, 1 | 1986-12-23 |
| Signed document transmission system Grant 4,625,076 - Okamoto , et al. November 25, 1 | 1986-11-25 |
| Switched capacitor circuit with high power supply projection ratio Grant 4,622,480 - Uchimura , et al. November 11, 1 | 1986-11-11 |
| Digital transmission system Grant 4,621,368 - Onoe , et al. November 4, 1 | 1986-11-04 |
| Process for producing high-purity metal targets for LSI electrodes Grant 4,619,695 - Oikawa , et al. October 28, 1 | 1986-10-28 |
| High density magnetic head Grant 4,618,901 - Hatakeyama , et al. October 21, 1 | 1986-10-21 |
| Multi-level decision circuit Grant 4,602,374 - Nakamura , et al. July 22, 1 | 1986-07-22 |
| Image data compression system Grant 4,602,383 - Ogawa , et al. July 22, 1 | 1986-07-22 |
| Method and an apparatus for coding/decoding telewriting signals Grant 4,597,101 - Kishimoto , et al. June 24, 1 | 1986-06-24 |
| Double-channel planar heterostructure semiconductor laser Grant 4,597,085 - Mito , et al. June 24, 1 | 1986-06-24 |
| Digital data code conversion circuit for variable-word-length data code Grant 4,593,267 - Kuroda , et al. June 3, 1 | 1986-06-03 |
| Interframe coding method and apparatus therefor Grant 4,591,909 - Kuroda , et al. May 27, 1 | 1986-05-27 |
| Optical adhesive composition Grant 4,591,627 - Maruno , et al. May 27, 1 | 1986-05-27 |
| Solar cells based on indium phosphide Grant 4,591,654 - Yamaguchi , et al. May 27, 1 | 1986-05-27 |
| Position detecting system Grant 4,589,773 - Ido , et al. May 20, 1 | 1986-05-20 |
| Method for the production of glass preform for optical fibers Grant 4,586,943 - Kyoto , et al. May 6, 1 | 1986-05-06 |
| Electrode structure for a semiconductor devices Grant 4,587,547 - Amemiya , et al. May 6, 1 | 1986-05-06 |
| Pipe laying apparatus Grant 4,576,515 - Morimoto , et al. March 18, 1 | 1986-03-18 |
| Decoder of adaptive differential pulse code modulation Grant 4,574,383 - Irie , et al. March 4, 1 | 1986-03-04 |
| Ultrasonic inspecting apparatus Grant 4,571,999 - Arita , et al. February 25, 1 | 1986-02-25 |
| Composite concentration system Grant 4,571,721 - Yasui , et al. February 18, 1 | 1986-02-18 |
| Speech recognition apparatus Grant 4,570,232 - Shikano February 11, 1 | 1986-02-11 |
| Semiconductor device and manufacturing process thereof Grant 4,564,997 - Matsuo , et al. January 21, 1 | 1986-01-21 |
| Photo electro transducer device Grant 4,565,928 - Yamamoto , et al. January 21, 1 | 1986-01-21 |
| Information memory device with address multiplexing Grant 4,564,926 - Nikaido , et al. January 14, 1 | 1986-01-14 |
| Thermal ink transfer printing system Grant 4,561,789 - Saito December 31, 1 | 1985-12-31 |
| Cochannel interference measurement system Grant 4,561,114 - Kozono , et al. December 24, 1 | 1985-12-24 |
| Semiconductor device and process for manufacturing the same Grant 4,557,036 - Kyuragi , et al. December 10, 1 | 1985-12-10 |
| Optical image sensor apparatus with grouped photosensors connected in common Grant 4,556,800 - Ohta , et al. December 3, 1 | 1985-12-03 |
| Adhesive filler apparatus Grant 4,555,295 - Orikasa , et al. November 26, 1 | 1985-11-26 |
| Apparatus for and a method of repairing by filling with an adhesive Grant 4,555,286 - Orikasa , et al. November 26, 1 | 1985-11-26 |
| Method and apparatus for gray level signal processing Grant 4,547,811 - Ochi , et al. October 15, 1 | 1985-10-15 |
| Raw material supply device Grant 4,545,801 - Miyajiri , et al. October 8, 1 | 1985-10-08 |
| Swinging actuators for use in magnetic disc type memory devices Grant 4,544,972 - Kogure , et al. October 1, 1 | 1985-10-01 |
| System for resolving collision in local network Grant 4,543,574 - Takagi , et al. September 24, 1 | 1985-09-24 |
| Monolithic integrated circuit device including AC negative feedback type high frequency amplifier circuit Grant 4,542,350 - Akazawa , et al. September 17, 1 | 1985-09-17 |
| Video/audio simultaneous transmission system Grant 4,542,406 - Shimoyama , et al. September 17, 1 | 1985-09-17 |
| Directivity diversity communication system with microstrip antenna Grant 4,538,153 - Taga August 27, 1 | 1985-08-27 |
| Adaptive predictive processing system Grant 4,538,234 - Honda , et al. August 27, 1 | 1985-08-27 |
| Buffer memory dispersion type video/audio transmission system Grant 4,538,176 - Nakajima , et al. August 27, 1 | 1985-08-27 |
| Shorted junction type programmable read only memory semiconductor devices Grant 4,538,167 - Yoshino , et al. August 27, 1 | 1985-08-27 |
| Microphone-array apparatus and method for extracting desired signal Grant 4,536,887 - Kaneda , et al. August 20, 1 | 1985-08-20 |
| Method for manufacturing crystalline film Grant 4,534,820 - Mori , et al. August 13, 1 | 1985-08-13 |
| Electron beam exposure system Grant 4,532,598 - Shibayama , et al. July 30, 1 | 1985-07-30 |
| Magnetic recording member and process for manufacturing the same Grant 4,529,659 - Hoshino , et al. July 16, 1 | 1985-07-16 |
| Process for producing optical glass product Grant 4,528,010 - Edahiro , et al. July 9, 1 | 1985-07-09 |
| Single mode optical fibers Grant 4,525,027 - Okamoto , et al. June 25, 1 | 1985-06-25 |
| Interference wave detection circuit for use in radio receiver Grant 4,525,868 - Kage , et al. June 25, 1 | 1985-06-25 |
| Phase-locked loop using integrated switched filter Grant 4,524,333 - Iwata , et al. June 18, 1 | 1985-06-18 |
| Optical switch Grant 4,521,069 - Ikeda June 4, 1 | 1985-06-04 |
| Electrode and semiconductor device provided with the electrode Grant 4,521,794 - Murase , et al. June 4, 1 | 1985-06-04 |
| Photodetecting device having Josephson junctions Grant 4,521,682 - Murakami , et al. June 4, 1 | 1985-06-04 |
| Buffer memory dispersion type video/audio transmission system with spatially and timewise divided inter-office junction lines Grant 4,518,989 - Yabiki , et al. May 21, 1 | 1985-05-21 |
| X-Ray lithography mask and method for fabricating the same Grant 4,515,876 - Yoshihara , et al. May 7, 1 | 1985-05-07 |
| Cryptosystem Grant 4,514,592 - Miyaguchi April 30, 1 | 1985-04-30 |
| Loudspeaking telephone system Grant 4,513,177 - Nishino , et al. April 23, 1 | 1985-04-23 |
| Protective packaging assembly and method Grant 4,509,820 - Murata , et al. April 9, 1 | 1985-04-09 |
| Cable pulling/feeding apparatus Grant 4,508,251 - Harada , et al. April 2, 1 | 1985-04-02 |
| DC-DC Converter for remote power feeding Grant 4,507,721 - Yamano , et al. March 26, 1 | 1985-03-26 |
| Pattern forming material and method for forming pattern therewith Grant 4,507,384 - Morita , et al. March 26, 1 | 1985-03-26 |
| Chemical vapor deposition apparatus Grant 4,503,807 - Nakayama , et al. March 12, 1 | 1985-03-12 |
| Consecutive identical digit suppression system in a digital communication system Grant 4,502,143 - Kato , et al. February 26, 1 | 1985-02-26 |
| Radio interference detection device for use in a multi-channel access angle-modulation radio system Grant 4,498,195 - Ooi , et al. February 5, 1 | 1985-02-05 |
| Switched capacitor filter having a reduced capacitance Grant 4,498,063 - Makabe , et al. February 5, 1 | 1985-02-05 |
| Drawing of polyoxymethylene using dielectric heating Grant 4,497,759 - Nakagawa , et al. February 5, 1 | 1985-02-05 |
| Plasma deposition method and apparatus Grant 4,492,620 - Matsuo , et al. January 8, 1 | 1985-01-08 |
| Optical fiber cable and process for production thereof Grant 4,491,386 - Negishi , et al. January 1, 1 | 1985-01-01 |
| Optical fiber alignment mechanism and connectors using the same Grant 4,490,007 - Murata December 25, 1 | 1984-12-25 |
| Superconductive logic circuit Grant 4,482,821 - Houkawa , et al. November 13, 1 | 1984-11-13 |
| Single-polarization single-mode optical fiber Grant 4,480,897 - Okamoto , et al. November 6, 1 | 1984-11-06 |
| Echo canceller system Grant 4,480,156 - Takahashi , et al. October 30, 1 | 1984-10-30 |
| Joining method to obtain elongated coated optical fiber Grant 4,475,935 - Tanaka , et al. October 9, 1 | 1984-10-09 |
| Decoding apparatus for codes represented by code tree Grant 4,475,174 - Kanayama October 2, 1 | 1984-10-02 |
| Current supply circuit Grant 4,465,967 - Tokunaga , et al. August 14, 1 | 1984-08-14 |
| Heat-sensitive magnetic transfer element Grant 4,463,034 - Tokunaga , et al. July 31, 1 | 1984-07-31 |
| Field effect transistor with combination Schottky-junction gate Grant 4,463,366 - Ishii , et al. July 31, 1 | 1984-07-31 |
| Method of manufacturing insulating film and electric device utilizing the same Grant 4,460,417 - Murase , et al. July 17, 1 | 1984-07-17 |
| Apparatus for heating heat-shrinkable tubes Grant 4,460,820 - Matsumoto , et al. July 17, 1 | 1984-07-17 |
| Semiconductor memory devices Grant 4,460,998 - Yamada , et al. July 17, 1 | 1984-07-17 |
| Method of patterning device regions by oxidizing patterned aluminum layer Grant 4,460,413 - Hirata , et al. July 17, 1 | 1984-07-17 |
| Insulated gate type transistors Grant 4,458,261 - Omura July 3, 1 | 1984-07-03 |
| Semiconductor memory device Grant 4,456,980 - Yamada , et al. June 26, 1 | 1984-06-26 |
| Image sensor Grant 4,453,187 - Komiya , et al. June 5, 1 | 1984-06-05 |
| Ion shower apparatus Grant 4,450,031 - Ono , et al. May 22, 1 | 1984-05-22 |
| Semiconductor memory device Grant 4,449,142 - Tsuchiya , et al. May 15, 1 | 1984-05-15 |
| Method for the manufacture of semiconductor device using refractory metal in a lift-off step Grant 4,448,800 - Ehara , et al. May 15, 1 | 1984-05-15 |
| Subscriber line testing system Grant 4,447,679 - Kojima , et al. May 8, 1 | 1984-05-08 |
| Method and apparatus of deflection calibration for a charged particle beam exposure apparatus Grant 4,443,703 - Shimazu , et al. April 17, 1 | 1984-04-17 |
| Electron beam control system Grant 4,437,008 - Matsuda , et al. March 13, 1 | 1984-03-13 |
| Selective call receiver having timed power supply Grant 4,437,095 - Akahori , et al. March 13, 1 | 1984-03-13 |
| Small-sized video or audio pickup device having a beam deflector disposed within a focusing device support Grant 4,437,177 - Watabe , et al. March 13, 1 | 1984-03-13 |
| Method of pattern formation Grant 4,434,224 - Yoshikawa , et al. February 28, 1 | 1984-02-28 |
| Electrophotographic photoreceptor and preparation thereof Grant 4,426,434 - Arishima , et al. January 17, 1 | 1984-01-17 |
| Method for forming micropattern Grant 4,426,247 - Tamamura , et al. January 17, 1 | 1984-01-17 |
| Semiconductor laser with two active layers Grant 4,426,704 - Nagai , et al. January 17, 1 | 1984-01-17 |
| Method of making glass waveguide for optical circuit Grant 4,425,146 - Izawa , et al. January 10, 1 | 1984-01-10 |
| Ferro fluidic seal Grant 4,424,974 - Mitsuya , et al. January 10, 1 | 1984-01-10 |
| Method of producing rod-shaped base material for optical transmission fiber Grant 4,421,539 - Edahiro , et al. December 20, 1 | 1983-12-20 |
| Semiconductor device Grant 4,419,685 - Sugawara , et al. December 6, 1 | 1983-12-06 |
| Buffer circuits Grant 4,417,163 - Otsuki , et al. November 22, 1 | 1983-11-22 |
| Semiconductor memory device test apparatus Grant 4,414,665 - Kimura , et al. November 8, 1 | 1983-11-08 |
| Fabrication methods of doped silica glass and optical fiber preform by using the doped silica glass Grant 4,414,012 - Suto , et al. November 8, 1 | 1983-11-08 |
| Process for producing optical fiber preform Grant 4,414,008 - Edahiro , et al. November 8, 1 | 1983-11-08 |
| Method of fabrication of Josephson tunnel junction Grant 4,412,902 - Michikami , et al. November 1, 1 | 1983-11-01 |
| Mechanical vibrator for light beam chopper Grant 4,413,179 - Matsuoka , et al. November 1, 1 | 1983-11-01 |
| Digital to analog converter Grant 4,412,208 - Akazawa , et al. October 25, 1 | 1983-10-25 |
| Method and equipment for processing gray scale facsimile signal Grant 4,409,623 - Kobayashi , et al. October 11, 1 | 1983-10-11 |
| Method of manufacturing semiconductor integrated circuit devices Grant 4,408,386 - Takayashiki , et al. October 11, 1 | 1983-10-11 |
| Process for producing high-purity silica glass Grant 4,406,680 - Edahiro , et al. September 27, 1 | 1983-09-27 |
| Process for preparing glass preform for optical fiber Grant 4,402,720 - Edahiro , et al. September 6, 1 | 1983-09-06 |
| Plasma deposition apparatus Grant 4,401,054 - Matsuo , et al. August 30, 1 | 1983-08-30 |
| Semiconductor memory test pattern generating apparatus Grant 4,402,081 - Ichimiya , et al. August 30, 1 | 1983-08-30 |
| Electron lens equipment Grant 4,400,622 - Takeuchi , et al. August 23, 1 | 1983-08-23 |
| Integrated circuit having spare parts activated by a high-to-low adjustable resistance device Grant 4,399,372 - Tanimoto , et al. August 16, 1 | 1983-08-16 |
| Method of manufacturing semiconductor device provided with complementary semiconductor elements Grant 4,393,573 - Kato , et al. July 19, 1 | 1983-07-19 |
| Semiconductor devices and method of manufacturing the same Grant 4,393,577 - Imai July 19, 1 | 1983-07-19 |
| Sound synthesizer Grant 4,393,272 - Itakura , et al. July 12, 1 | 1983-07-12 |
| Electronic key telephone set circuit for permitting dialing during failure of commercial power supplied to the set Grant 4,392,024 - Shinoi , et al. July 5, 1 | 1983-07-05 |
| Subscriber line testing system Grant 4,392,026 - Kojima , et al. July 5, 1 | 1983-07-05 |
| Process for producing a glass fiber for light transmission Grant 4,388,093 - Kimura , et al. June 14, 1 | 1983-06-14 |
| Surface acoustic wave resonator Grant 4,387,355 - Uno , et al. June 7, 1 | 1983-06-07 |
| Current supplying circuit with shorted-to-ground fault detecting function Grant 4,385,336 - Takeshita , et al. May 24, 1 | 1983-05-24 |
| Fabrication of a low-loss plastic optical fiber Grant 4,381,269 - Kaino , et al. April 26, 1 | 1983-04-26 |
| Signalling system and signal control equipment for multi-address calling Grant 4,379,946 - Mizuno , et al. April 12, 1 | 1983-04-12 |
| Method of making semiconductor devices Grant 4,379,001 - Sakai , et al. April 5, 1 | 1983-04-05 |
| Laser beam-recording media and method for manufacturing the same Grant 4,373,004 - Asano , et al. February 8, 1 | 1983-02-08 |
| Single mode optical fibers Grant 4,372,647 - Okamoto , et al. February 8, 1 | 1983-02-08 |
| Time division multiplex communication system Grant 4,370,744 - Hirano , et al. January 25, 1 | 1983-01-25 |
| Semiconductor memory test equipment Grant 4,369,511 - Kimura , et al. January 18, 1 | 1983-01-18 |
| Optoelectronic switches Grant 4,368,385 - Kanbe , et al. January 11, 1 | 1983-01-11 |
| Driving equipment for multi-gradation level reproduction Grant 4,368,491 - Saito January 11, 1 | 1983-01-11 |
| Method of fabricating multi-mode optical fiber preforms Grant 4,367,085 - Suto , et al. January 4, 1 | 1983-01-04 |
| Optical switch Grant 4,365,862 - Terui , et al. December 28, 1 | 1982-12-28 |
| Switched-capacitor filter Grant 4,366,456 - Ueno , et al. December 28, 1 | 1982-12-28 |
| Method for coating optical fibers with thermoplastic resin Grant 4,351,657 - Kimura , et al. September 28, 1 | 1982-09-28 |
| Doping from a photoresist layer Grant 4,350,541 - Mizushima , et al. September 21, 1 | 1982-09-21 |
| Fusion splicing of multi-layer optical fiber bundles Grant 4,350,867 - Kinoshita , et al. September 21, 1 | 1982-09-21 |
| Key telephone system Grant 4,347,409 - Ogawa , et al. August 31, 1 | 1982-08-31 |
| Method and apparatus for eliminating double bit errosion in a differential phase shift keying system Grant 4,346,472 - Ohkoshi , et al. August 24, 1 | 1982-08-24 |
| Fabrication method of single-mode optical fiber preforms Grant 4,345,928 - Kawachi , et al. August 24, 1 | 1982-08-24 |
| Light weight battery Grant 4,343,871 - Tobishima , et al. August 10, 1 | 1982-08-10 |
| Time division switching circuit with time slot interchange Grant 4,344,170 - Arita August 10, 1 | 1982-08-10 |
| Magnetic recording and reproduction of digital information Grant 4,343,023 - Nishimura , et al. August 3, 1 | 1982-08-03 |
| Photo-electric converting apparatus Grant 4,341,954 - Mizushima , et al. July 27, 1 | 1982-07-27 |
| D/A Conversion system with compensation circuit Grant 4,340,882 - Maio , et al. July 20, 1 | 1982-07-20 |
| Clock recovery circuit for burst communications systems Grant 4,339,817 - Hata , et al. July 13, 1 | 1982-07-13 |
| Process for producing a glass preform for optical fiber Grant 4,338,111 - Edahiro , et al. July 6, 1 | 1982-07-06 |
| Ink liquid supply system for ink jet system printer Grant 4,337,469 - Takano , et al. June 29, 1 | 1982-06-29 |
| Method for producing multi-component glass fiber preform Grant 4,336,049 - Takahashi , et al. June 22, 1 | 1982-06-22 |
| Coated glass fibers for optical transmission Grant 4,334,733 - Takeshima , et al. June 15, 1 | 1982-06-15 |
| Switched-capacitor filter Grant 4,333,064 - Kato , et al. June 1, 1 | 1982-06-01 |
| Blazed diffraction grating structures and method of manufacturing the same Grant 4,330,175 - Fujii , et al. May 18, 1 | 1982-05-18 |
| Logic circuit with asymmetrical quantum interferometric circuits Grant 4,330,841 - Yamada , et al. May 18, 1 | 1982-05-18 |
| Recording paper capable of recording images in two colors Grant 4,328,977 - Ozawa , et al. May 11, 1 | 1982-05-11 |
| Adaptive equalization system for nonlinearities Grant 4,329,655 - Nojima , et al. May 11, 1 | 1982-05-11 |
| Voice band multiplex transmission system Grant 4,328,579 - Hashimoto , et al. May 4, 1 | 1982-05-04 |
| Method of manufacturing a FET device disposed in a compound s/c layer on a semi-insulating substrate Grant 4,327,475 - Asai , et al. May 4, 1 | 1982-05-04 |
| Digital multi-frequency receiver Grant 4,328,398 - Kawaguchi , et al. May 4, 1 | 1982-05-04 |
| Heat pipe cooling arrangement for integrated circuit chips Grant 4,327,399 - Sasaki , et al. April 27, 1 | 1982-04-27 |
| Space diversity reception system having compensation means of multipath effect Grant 4,326,294 - Okamoto , et al. April 20, 1 | 1982-04-20 |
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