Inventor · disambiguated record
Hirokazu Itoh
Also filed as: ITOH HIROKAZU
22 granted patents·3 pending applications·170 citations·filing 1975–2025
95Inventor score
Files withFURUKAWA ELECTRIC CO LTD12NIPPON CATALYTIC CHEM IND6SEIKO EPSON CORP2FIRST SHA CO LTD1HITACHI METALS LTD1
Top patents by PatentIndex Score
25 records- 0197US12009636B2Wavelength-variable laserFURUKAWA ELECTRIC CO LTD·Filed 2023·Granted Jun 11, 2024·2 cites·11 claims
- 0296US10020638B2Optical semiconductor device, semiconductor laser module, and optical fiber amplifierFURUKAWA ELECTRIC CO LTD·Filed 2017·Granted Jul 10, 2018·11 cites·6 claims
- 0395US11581706B2Wavelength-variable laserFURUKAWA ELECTRIC CO LTD·Filed 2021·Granted Feb 14, 2023·2 cites·12 claims
- 0495US9601905B2Optical semiconductor device, semiconductor laser module, and optical fiber amplifierFURUKAWA ELECTRIC CO LTD·Filed 2015·Granted Mar 21, 2017·11 cites·2 claims
- 0592US9083150B2Optical semiconductor device, semiconductor laser module, and optical fiber amplifierFURUKAWA ELECTRIC CO LTD·Filed 2014·Granted Jul 14, 2015·10 cites·11 claims
- 0691US10511150B2Wavelength-variable laserFURUKAWA ELECTRIC CO LTD·Filed 2018·Granted Dec 17, 2019·6 cites·6 claims
- 0790US12327983B2Wavelength-variable laserFURUKAWA ELECTRIC CO LTD·Filed 2024·Granted Jun 10, 2025·0 cites·11 claims
- 0885US2025279629A1Wavelength-variable laserFURUKAWA ELECTRIC CO LTD·Filed 2025·Application pending·0 cites
- 0984US5948936AMethod for production of sulfide group-containing thiol compoundNIPPON CATALYTIC CHEM IND·Filed 1997·Granted Sep 7, 1999·27 cites·5 claims
- 1083US7669637B2Impeller for supercharger and method of manufacturing the sameHITACHI METALS LTD·Filed 2005·Granted Mar 2, 2010·8 cites·11 claims
- 1178US11605935B2Wavelength-variable laserFURUKAWA ELECTRIC CO LTD·Filed 2021·Granted Mar 14, 2023·0 cites·6 claims
- 1275US6018509AConnector apparatus for electrically connecting an optical component drive device to an external electrical circuitSEIKO EPSON CORP·Filed 1997·Granted Jan 25, 2000·28 cites·2 claims
- 1372US8385379B2Optical semiconductor device and pumping light source for optical fiber amplifierFURUKAWA ELECTRIC CO LTD·Filed 2010·Granted Feb 26, 2013·2 cites·14 claims
- 1469US10938183B2Wavelength-variable laserFURUKAWA ELECTRIC CO LTD·Filed 2019·Granted Mar 2, 2021·0 cites·6 claims
- 1563US8678769B2Compressor impeller and method of manufacturing the sameKUBOTA YASUHIRO·Filed 2006·Granted Mar 25, 2014·3 cites·9 claims
- 1663US6248687B1Process for presulfurizing a desulfurization catalyst used in a hydrodesulfurization unit of petroleum refinery and presulfurization promoterNIPPON CATALYTIC CHEM IND·Filed 1999·Granted Jun 19, 2001·30 cites·6 claims
- 1752US2013149804A1Optical semiconductor device and pumping light source for optical fiber amplifierFURUKAWA ELECTRIC CO LTD·Filed 2013·Application pending·0 cites
- 1851US2011064959A1Low-voc leatherMIDORI HOKUYO CO LTD·Filed 2008·Application pending·0 cites
- 1946US5790510AOptical component drive device including nonparallel elastic platesSEIKO EPSON CORP·Filed 1996·Granted Aug 4, 1998·7 cites·46 claims
- 2032US5403339ABlood vessel dilatorTERUMO CORP·Filed 1992·Granted Apr 4, 1995·15 cites·36 claims
- 2131US5919985AMethod for production of sulfide group-containing thiol compoundNIPPON CATALYTIC CHEM IND·Filed 1997·Granted Jul 6, 1999·0 cites·7 claims
- 2230US5811591AProcess of producing hydroxyalkanalNIPPON CATALYTIC CHEM IND·Filed 1995·Granted Sep 22, 1998·1 cites·57 claims
- 2328US5965011AMethod for reducing deposition of cokes in heat-refining process of petroleum high-molecular hydrocarbons, and additive used in the methodNIPPON CATALYTIC CHEM IND·Filed 1997·Granted Oct 12, 1999·4 cites·9 claims
- 2427US4016309AMethod for treating printed paper sheets for illuminated displayFIRST SHA CO LTD·Filed 1975·Granted Apr 5, 1977·3 cites·1 claims
- 2526US6103102AMethod for improving the yield of lighter components in heat-refining process of petroleum heavy oil, and additive used in the methodNIPPON CATALYTIC CHEM IND·Filed 1997·Granted Aug 15, 2000·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →