Inventor · disambiguated record
Tetsuya Kiyonaga
Also filed as: KIYONAGA TETSUYA
20 granted patents·3 pending applications·753 citations·filing 1989–2006
96Inventor score
Files withFUJITSU LTD22
Top patents by PatentIndex Score
23 records- 0192US6643472B1APD bias circuitFUJITSU LTD·Filed 2000·Granted Nov 4, 2003·87 cites·24 claims
- 0283US6188738B1Clock extraction circuitFUJITSU LTD·Filed 1998·Granted Feb 13, 2001·77 cites·7 claims
- 0382US4965858APolarization diversity optical receiver for coherent optical communicationFUJITSU LTD·Filed 1989·Granted Oct 23, 1990·57 cites·39 claims
- 0481US6501774B2Optical transmission apparatus for multiple wavelengths and optical transmission wavelength control methodFUJITSU LTD·Filed 2001·Granted Dec 31, 2002·18 cites·12 claims
- 0581US6483625B2WDM optical transmission apparatusFUJITSU LTD·Filed 2001·Granted Nov 19, 2002·25 cites·13 claims
- 0680US6229833B1Laser diode protecting circuit and laser driving current control circuitFUJITSU LTD·Filed 1999·Granted May 8, 2001·53 cites·10 claims
- 0779US6590686B1Optical transmitterFUJITSU LTD·Filed 1999·Granted Jul 8, 2003·66 cites·14 claims
- 0879US5052051AHeterodyne receiver for coherent optical communicationFUJITSU LTD·Filed 1989·Granted Sep 24, 1991·49 cites·33 claims
- 0978US6594070B2Optical communication system, optical receiver and wavelength converterFUJITSU LTD·Filed 2002·Granted Jul 15, 2003·19 cites·14 claims
- 1078US5115332AReceiver for coherent optical communicationFUJITSU LTD·Filed 1990·Granted May 19, 1992·67 cites·35 claims
- 1177US7215894B2Optical transmitter deviceFUJITSU LTD·Filed 2005·Granted May 8, 2007·7 cites·7 claims
- 1270US5808571ASynchronization control unit which maintains synchronization between serial-to-parallel converters operating in parallel, or between parallel-to-serial converters operating in parallelFUJITSU LTD·Filed 1997·Granted Sep 15, 1998·35 cites·26 claims
- 1370US5003626ADual balanced optical signal receiverFUJITSU LTD·Filed 1989·Granted Mar 26, 1991·39 cites·22 claims
- 1465US7031621B2Optical receiving deviceFUJITSU LTD·Filed 2004·Granted Apr 18, 2006·8 cites·12 claims
- 1563US6097746ALaser diode protecting circuitFUJITSU LTD·Filed 1998·Granted Aug 1, 2000·26 cites·9 claims
- 1661US5652767AData decision circuit used in optical parallel receiving module, optical parallel receiving module, optical parallel transmission system and terminal structure of optical transmission fiberFUJITSU LTD·Filed 1995·Granted Jul 29, 1997·49 cites·21 claims
- 1760US5253097ADemodulator and a polarization diversity receiver for coherent optical communication provided with the demodulatorFUJITSU LTD·Filed 1991·Granted Oct 12, 1993·31 cites·20 claims
- 1859US5050176ADirect modulation phase-shift-keying system and methodFUJITSU LTD·Filed 1990·Granted Sep 17, 1991·35 cites·15 claims
- 1944US2005105917A1Optical modulating apparatusFiled 2004·Application pending·0 cites
- 2039US2007076771A1Method and apparatus for controlling extinction ratio of light-emitting deviceFUJITSU LTD·Filed 2006·Application pending·0 cites
- 2139US2007160374A1Optical transmitter and method for controlling optical transmitterFUJITSU LTD·Filed 2006·Application pending·0 cites
- 2236US6065129AClock signal detection circuitFUJITSU LTD·Filed 1998·Granted May 16, 2000·4 cites·13 claims
- 2329US6282098B1Electronic circuit module, electronic circuit module connecting structure and connecting member, and method for connecting the sameFUJITSU LTD·Filed 1999·Granted Aug 28, 2001·1 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →