Inventor · disambiguated record
Hiroyuki Tsuda
Also filed as: TSUDA HIROYUKI
34 granted patents·10 pending applications·506 citations·filing 1989–2022
97Inventor score
Files withSANYO ELECTRIC CO8UNIV KEIO5NIPPON TELEGRAPH & TELEPHONE4HONDA MOTOR CO LTD3NEGAMI YUICHI3
Top patents by PatentIndex Score
44 records- 0194US5321539ALiquid crystal Fabry-Perot etalon with glass spacerNIPPON TELEGRAPH & TELEPHONE·Filed 1992·Granted Jun 14, 1994·145 cites·44 claims
- 0291US6122419AOptical signal processing apparatus and optical signal processing methodNIPPON TELEGRAPH & TELEPHONE·Filed 1997·Granted Sep 19, 2000·97 cites·16 claims
- 0386US5076672AAll-optical switch apparatus using a nonlinear etalonNIPPON TELEGRAPH & TELEPHONE·Filed 1989·Granted Dec 31, 1991·66 cites·20 claims
- 0485US8190014B2Focus control circuit for adjusting the focus by moving a lensTSUDA HIROYUKI·Filed 2010·Granted May 29, 2012·15 cites·5 claims
- 0585US6799242B1Optical disc player with sleep modeSANYO ELECTRIC CO·Filed 2000·Granted Sep 28, 2004·18 cites·25 claims
- 0684US7860358B2Multimode interference waveguide type optical switchUNIV KEIO·Filed 2006·Granted Dec 28, 2010·15 cites·8 claims
- 0783US6456760B1Optical signal processing apparatus and optical signal processing methodNIPPON TELEGRAPH & TELEPHONE·Filed 2000·Granted Sep 24, 2002·24 cites·12 claims
- 0876US7269305B2Optical switchUNIV KEIO·Filed 2005·Granted Sep 11, 2007·5 cites·7 claims
- 0974US7653480B2Traffic information providing systemHONDA MOTOR CO LTD·Filed 2005·Granted Jan 26, 2010·18 cites·5 claims
- 1074US7047353B2Optical disc player with sleep modeSANYO ELECTRIC CO·Filed 2004·Granted May 16, 2006·8 cites·15 claims
- 1173US8503836B2Wavelength domain optical switchISHIKAWA HIROSHI·Filed 2011·Granted Aug 6, 2013·4 cites·8 claims
- 1268US9316142B2Spark ignition engineINOUE HIROSHI·Filed 2012·Granted Apr 19, 2016·2 cites·10 claims
- 1368US8229258B2Optical waveguide-type wavelength domain switchISHIKAWA HIROSHI·Filed 2009·Granted Jul 24, 2012·5 cites·16 claims
- 1466US8396429B2Communication test device and communication test methodNEGAMI YUICHI·Filed 2012·Granted Mar 12, 2013·2 cites·1 claims
- 1566US7756376B2Optical functional waveguide, optical modulator, arrayed waveguide grating, and dispersion compensation circuitUNIV KEIO·Filed 2005·Granted Jul 13, 2010·2 cites·8 claims
- 1664US7496256B2Diffraction grating and dispersion compensation circuitUNIV KEIO·Filed 2007·Granted Feb 24, 2009·3 cites·5 claims
- 1761US6630744B2Multichip moduleSANYO ELECTRIC CO·Filed 2001·Granted Oct 7, 2003·10 cites·15 claims
- 1860US8311486B2Communication test device and communication test methodNEGAMI YUICHI·Filed 2008·Granted Nov 13, 2012·2 cites·9 claims
- 1960US6745349B1CD-ROM decoder and method for temporarily storing and retrieving digital dataSANYO ELECTRIC CO·Filed 2000·Granted Jun 1, 2004·4 cites·12 claims
- 2060US6697915B2CD-ROM decoderSANYO ELECTRIC CO·Filed 2001·Granted Feb 24, 2004·7 cites·4 claims
- 2158US6757609B2Vehicle navigation server for obtaining traffic information for mesh unit on travel routeHONDA MOTOR CO LTD·Filed 2003·Granted Jun 29, 2004·18 cites·16 claims
- 2258US6675343B1Code error correcting and detecting apparatusSANYO ELECTRIC CO·Filed 2000·Granted Jan 6, 2004·3 cites·9 claims
- 2355US7289802B2Communication terminal performance measurement system having effective trace information display function and communication terminal performance measurement methodANRITSU CORP·Filed 2005·Granted Oct 30, 2007·1 cites·80 claims
- 2455US2025028119A1Optical coupling circuit deviceUNIV KEIO·Filed 2022·Application pending·0 cites
- 2550US6345374B1Code error correcting apparatusSANYO ELECTRIC CO·Filed 1999·Granted Feb 5, 2002·9 cites·8 claims
- 2650US2017047132A1Ex-core nuclear instrumentation deviceMITSUBISHI ELECTRIC CORP·Filed 2014·Application pending·0 cites
- 2748US5809979AFuel supplying device for engineKUBOTA KK·Filed 1997·Granted Sep 22, 1998·13 cites·19 claims
- 2846US8498581B2Communication test device and communication test methodNEGAMI YUICHI·Filed 2012·Granted Jul 30, 2013·0 cites·14 claims
- 2946US2010230957A1Pipe jointASAHI ORGANIC CHEM IND·Filed 2008·Application pending·0 cites
- 3045US7523726B2Air-cooled V-shaped engineKUBOTA KK·Filed 2007·Granted Apr 28, 2009·1 cites·29 claims
- 3142US7024513B2Controller and data processing systemSANYO ELECTRIC CO·Filed 2001·Granted Apr 4, 2006·0 cites·12 claims
- 3242US2013272650A1Wavelength cross connect deviceOF ADVANCED IND SCIENCE AND TECHNOLOGY NAT INST·Filed 2013·Application pending·0 cites
- 3341US12291122B2Charging assistance system, method, and computer programSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted May 6, 2025·0 cites·15 claims
- 3441US2004141439A1DecoderFiled 2003·Application pending·0 cites
- 3540US2004044472A1Vehicle navigation server, and vehicle navigation device and system using the sameHONDA MOTOR CO LTD·Filed 2003·Application pending·0 cites
- 3639US9224585B2Dose-rate measuring systemMITSUBISHI ELECTRIC CORP·Filed 2013·Granted Dec 29, 2015·0 cites·3 claims
- 3739US8307812B2Vaporized-fuel processing device for an engineINOUE HIROSHI·Filed 2010·Granted Nov 13, 2012·0 cites·4 claims
- 3838US2001027552A1CD-ROM decoderFiled 2001·Application pending·0 cites
- 3938US2001027551A1CD-ROM decoderFiled 2001·Application pending·0 cites
- 4038US2001027550A1CD-ROM decoderFiled 2001·Application pending·0 cites
- 4137US11125925B2Optical elementAUTOCLONING TECH LTD·Filed 2017·Granted Sep 21, 2021·0 cites·7 claims
- 4235US8773122B2Hall element control circuitKURA TAKESHI·Filed 2011·Granted Jul 8, 2014·0 cites·3 claims
- 4334US2011291603A1Drive control circuit and focus control circuitKURA TAKESHI·Filed 2011·Application pending·0 cites
- 4430US4917233ATable conveyorCHIKUCHI TEKKOSHO CO LTD·Filed 1989·Granted Apr 17, 1990·9 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →