Hitachi Telecom Technologies, Ltd
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hitachi Telecom Technologies, Ltd.The latest application filed is for "dtmf signal transmission method and communication apparatus".
- Hitachi Telecom Technologies, Ltd - Koriyama-shi JP
- Hitachi Telecom Technologies, Ltd. - Tokyo JP
- Hitachi Telecom Technologies, Ltd. - Koriyama JP
- Hitachi Telecom Technologies, Ltd. - Fukushima-ken JP
- HITACHI TELECOM TECHNOLOGIES, LTD. -
- Hitachi Telecom Technologies, Ltd. - JP JP
| Patent | Date |
|---|---|
| DTMF signal transmission method and communication apparatus Grant 7,532,606 - Suzuki , et al. May 12, 2 | 2009-05-12 |
| Packet data processing apparatus and packet data processing method Grant 7,120,171 - Sasaki October 10, 2 | 2006-10-10 |
| Voice data relay apparatus Grant 7,103,036 - Yoshihara , et al. September 5, 2 | 2006-09-05 |
| Call center system Grant 7,099,456 - Zama August 29, 2 | 2006-08-29 |
| DTMF signal transmission method and communication apparatus Grant 7,062,033 - Suzuki , et al. June 13, 2 | 2006-06-13 |
| ATM apparatus, IP apparatus and bus system Grant 7,058,060 - Oono , et al. June 6, 2 | 2006-06-06 |
| DTMF signal transmission method and communication apparatus Grant 7,050,570 - Suzuki , et al. May 23, 2 | 2006-05-23 |
| Cell creation method for control line signals of ATM Network and multiplexing equipment Grant 7,050,438 - Atsuumi , et al. May 23, 2 | 2006-05-23 |
| Multiplexer and priority control method for packet data transmissions Grant 7,035,265 - Ando , et al. April 25, 2 | 2006-04-25 |
| Multiplexing apparatus Grant 6,970,460 - Watanabe , et al. November 29, 2 | 2005-11-29 |
| ATM device, subscriber system, communication system and backup method Grant 6,898,178 - Aso , et al. May 24, 2 | 2005-05-24 |
| Local networking system for registering unregistered terminals Grant 6,892,232 - Takahashi , et al. May 10, 2 | 2005-05-10 |
| Line switching system and line switching unit of dynamic band variation unit Grant 6,862,290 - Aso , et al. March 1, 2 | 2005-03-01 |
| Communication system, exchange and communication holding control method Grant 6,836,545 - Abe , et al. December 28, 2 | 2004-12-28 |
| Virtual connection switching method and ATM switch Grant 6,822,962 - Noake , et al. November 23, 2 | 2004-11-23 |
| ATM multiplex apparatus and congestion reporting method Grant 6,810,014 - Watanabe , et al. October 26, 2 | 2004-10-26 |
| DTMF signal transmission method and communication apparatus App 20040160966 - Suzuki, Shinya ; et al. | 2004-08-19 |
| DTMF signal transmission method and communication apparatus App 20040161098 - Suzuki, Shinya ; et al. | 2004-08-19 |
| DTMF signal transmission method and communication apparatus App 20040160965 - Suzuki, Shinya ; et al. | 2004-08-19 |
| Disorder detecting device Grant 6,772,373 - Sugeno August 3, 2 | 2004-08-03 |
| Communication system, exchange and extension call processing method Grant 6,714,640 - Yabe , et al. March 30, 2 | 2004-03-30 |
| System for transmitting DTMF signal and communication equipment thereof Grant 6,700,973 - Suzuki , et al. March 2, 2 | 2004-03-02 |
| Command system for performing centralized management of data in a command desk Grant 6,646,712 - Kurumada , et al. November 11, 2 | 2003-11-11 |
| Speech system, extension communication terminal, and method of up-loading data for communication system Grant 6,647,104 - Endo November 11, 2 | 2003-11-11 |
| Call center system App 20030185382 - Zama, Shinichi | 2003-10-02 |
| Card reading-writing device with modem Grant D421,423 - Fujimori , et al. March 7, 2 | 2000-03-07 |
| Circuit switching control method for multiplex communication equipment Grant 5,953,313 - Aso , et al. September 14, 1 | 1999-09-14 |
| Electric appliance, its assembling method, and its housing structure Grant 5,838,402 - Sanpei , et al. November 17, 1 | 1998-11-17 |
| Telephone terminal having multiple handsets Grant 5,754,642 - Domoto , et al. May 19, 1 | 1998-05-19 |
| Dealing board Grant 5,666,409 - Tanji , et al. September 9, 1 | 1997-09-09 |
| Line status display system for telephone exchange system Grant 5,471,525 - Domoto , et al. November 28, 1 | 1995-11-28 |
| Panel unit of dealing board Grant 5,461,376 - Oono , et al. October 24, 1 | 1995-10-24 |
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