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Patent applications and USPTO patent grants for Takeyari; Ryoji.The latest application filed is for "optical transmission system constructing method and system".
Patent | Date |
---|---|
Optical transmission system constructing method and system Grant 7,292,785 - Tomooka , et al. November 6, 2 | 2007-11-06 |
Optical transmission system constructing method and system App 20070053687 - Tomooka; Keiji ;   et al. | 2007-03-08 |
Optical transmission system constructing method and system Grant 7,167,652 - Tomooka , et al. January 23, 2 | 2007-01-23 |
Optical frequency division multiplexing network Grant 7,127,170 - Takai , et al. October 24, 2 | 2006-10-24 |
Optical transmitter Grant 7,099,596 - Watanabe , et al. August 29, 2 | 2006-08-29 |
Optical transmitter equipment and semiconductor laser device Grant 6,931,039 - Nakahara , et al. August 16, 2 | 2005-08-16 |
Optical frequency division multiplexing network App 20050175351 - Takai, Atsushi ;   et al. | 2005-08-11 |
Optical single sideband transmitter Grant 6,850,713 - Kikuchi , et al. February 1, 2 | 2005-02-01 |
Wavelength-multiplexed narrow-bandwidth optical transmitter and wavelength-multiplexed vestigial-side-band optical transmitter App 20040208428 - Kikuchi, Nobuhiko ;   et al. | 2004-10-21 |
Optical transmission system constructing method and system App 20040161189 - Tomooka, Keiji ;   et al. | 2004-08-19 |
Optical transmission system constructing method and system Grant 6,728,489 - Tomooka , et al. April 27, 2 | 2004-04-27 |
Optical transmitter equipment and semiconductor laser device App 20040028100 - Nakahara, Kouji ;   et al. | 2004-02-12 |
Optical receiver Grant 6,658,217 - Ohhata , et al. December 2, 2 | 2003-12-02 |
Optical single sideband transmitter App 20030189745 - Kikuchi, Nobuhiko ;   et al. | 2003-10-09 |
Optical transmitter App 20030180054 - Watanabe, Koichi ;   et al. | 2003-09-25 |
Optical frequency division multiplexing network Grant 6,619,865 - Takai , et al. September 16, 2 | 2003-09-16 |
Band-expanding method for optical amplifiers and optical transmission apparatus Grant 6,587,260 - Kikuchi , et al. July 1, 2 | 2003-07-01 |
Band-expanding method for optical amplifiers and optical transmission apparatus App 20020145796 - Kikuchi, Nobuhiko ;   et al. | 2002-10-10 |
Clock producing circuit and semiconductor integrated circuit for communication App 20020031148 - Watanabe, Keiki ;   et al. | 2002-03-14 |
Optical transmission system constructing method and system App 20020024699 - Tomooka, Keiji ;   et al. | 2002-02-28 |
Optical receiver App 20020005974 - Ohhata, Kenichi ;   et al. | 2002-01-17 |
Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signal Grant 6,266,169 - Tomooka , et al. July 24, 2 | 2001-07-24 |
Optical wavelength multiplexing system Grant 6,005,699 - Tomooka , et al. December 21, 1 | 1999-12-21 |
Optical multiplex transmission equipment and method Grant 5,861,972 - Tomooka , et al. January 19, 1 | 1999-01-19 |
Feedback type pre-amplifier Grant 5,844,445 - Takeyari December 1, 1 | 1998-12-01 |
Optical frequency division multiplexing network Grant 5,801,864 - Takai , et al. September 1, 1 | 1998-09-01 |
Optical transmission system constructing method and system Grant 5,739,932 - Tomooka , et al. April 14, 1 | 1998-04-14 |
Multicast communications method Grant 5,612,959 - Takase , et al. March 18, 1 | 1997-03-18 |
Optical transmission system constructing method and system Grant 5,555,477 - Tomooka , et al. September 10, 1 | 1996-09-10 |
Optical frequency division multiplexing network Grant 5,510,921 - Takai , et al. April 23, 1 | 1996-04-23 |
Optical routing system Grant 5,438,444 - Tayonaka , et al. August 1, 1 | 1995-08-01 |
Homodyne optical receiver equipment Grant 5,323,258 - Tsushima , et al. June 21, 1 | 1994-06-21 |
Optical frequency division multiplexing network Grant 5,321,540 - Takai , et al. June 14, 1 | 1994-06-14 |
Polarization diversity optical receiving apparatus and method Grant 5,142,402 - Tsushima , et al. August 25, 1 | 1992-08-25 |
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