Inventor · disambiguated record
Hiroyuki Rokugawa
Also filed as: ROKUGAWA HIROYUKI
18 granted patents·320 citations·filing 1990–2010
95Inventor score
Top patents by PatentIndex Score
18 records- 0188US6975813B1Light output control deviceFUJITSU LTD·Filed 2000·Granted Dec 13, 2005·27 cites·23 claims
- 0279US6256329B1Semiconductor laser driver circuitFUJITSU LTD·Filed 1998·Granted Jul 3, 2001·48 cites·14 claims
- 0377US6242870B1Light emitting device driving circuitFUJITSU LTD·Filed 1998·Granted Jun 5, 2001·59 cites·28 claims
- 0473US5337323AIntegrated semiconductor laser array apparatusFUJITSU LTD·Filed 1992·Granted Aug 9, 1994·32 cites·5 claims
- 0559US8386991B2Support apparatus, method, and recording mediumFUJITSU SEMICONDUCTOR LTD·Filed 2010·Granted Feb 26, 2013·1 cites·6 claims
- 0656US5715075AOptical processing device operating in a wavelength-synchronized mode and an optical circuit exchanger that uses such an optical processing deviceFUJITSU LTD·Filed 1994·Granted Feb 3, 1998·26 cites·9 claims
- 0755US5274487APhotonic switching systemFUJITSU LTD·Filed 1990·Granted Dec 28, 1993·23 cites·22 claims
- 0854US7119617B2Differential amplifierFUJITSU LTD·Filed 2004·Granted Oct 10, 2006·7 cites·15 claims
- 0954US5657144AOptical processing device operating in a wavelength-synchronized mode and an optical circuit exchanger that uses such an optical processing deviceFUJITSU LTD·Filed 1995·Granted Aug 12, 1997·16 cites·6 claims
- 1049US7266308B2Light output control circuitFUJITSU LTD·Filed 2005·Granted Sep 4, 2007·0 cites·9 claims
- 1146US5165077AOptical drop-and-insert apparatusFUJITSU LTD·Filed 1990·Granted Nov 17, 1992·13 cites·21 claims
- 1245US6078150ALight-emitting element driving circuit and device using the sameFUJITSU LTD·Filed 1998·Granted Jun 20, 2000·15 cites·13 claims
- 1344US5923455AData identifying device and light receiver using the sameFUJITSU LTD·Filed 1998·Granted Jul 13, 1999·15 cites·5 claims
- 1444US5848084ASemiconductor light source for an optical transmitter and an optical transmission module using the semiconductor light sourceFUJITSU LTD·Filed 1996·Granted Dec 8, 1998·11 cites·1 claims
- 1539US5740210AData discriminating circuit and a parallel data receiver using the sameFUJITSU LTD·Filed 1996·Granted Apr 14, 1998·12 cites·46 claims
- 1635US5796792AData identifying device and light receiver using the sameFUJITSU LTD·Filed 1995·Granted Aug 18, 1998·6 cites·15 claims
- 1735US5473636AData discriminating circuit and an optical receiver using the sameFUJITSU LTD·Filed 1993·Granted Dec 5, 1995·7 cites·24 claims
- 1834US7068747B2Data decision circuit using clock signal which has phase optimized with respect to phase of input data signalFUIJTSU LTD·Filed 2001·Granted Jun 27, 2006·2 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →