Inventor · disambiguated record
Koichi Koyama
Also filed as: KOYAMA KOICHI
18 granted patents·7 pending applications·261 citations·filing 1976–2023
94Inventor score
Files withFUJI PHOTO FILM CO LTD12SUMITOMO ELECTRIC INDUSTRIES11JAPAN SCIENCE & TECH CORP1KAWAHARA TETSUYA1
Top patents by PatentIndex Score
25 records- 0190US4987032AFunctional organic thin film and method of manufacture thereofFUJI PHOTO FILM CO LTD·Filed 1988·Granted Jan 22, 1991·69 cites·9 claims
- 0289US10094989B2Optical device, optical processing device, and method of producing the optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2017·Granted Oct 9, 2018·6 cites·7 claims
- 0387US5154808AFunctional organic thin film and process for producing the sameFUJI PHOTO FILM CO LTD·Filed 1991·Granted Oct 13, 1992·72 cites·13 claims
- 0487US4055428ARedox dye releasers o-sulfonamidophenolFUJI PHOTO FILM CO LTD·Filed 1976·Granted Oct 25, 1977·24 cites·28 claims
- 0586US4559290AHeat development with reducible dye releaserFUJI PHOTO FILM CO LTD·Filed 1984·Granted Dec 17, 1985·21 cites·21 claims
- 0684US10564370B2Optical connecting device, light processing apparatus, method for fabricating optical connecting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Feb 18, 2020·4 cites·4 claims
- 0783US4336322AColor photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1980·Granted Jun 22, 1982·15 cites·23 claims
- 0879US9575257B2Optical device, optical processing device, method for fabricating optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted Feb 21, 2017·3 cites·9 claims
- 0970US10332937B2Semiconductor device having a protruding interposer edge faceSUMITOMO ELECTRIC INDUSTRIES·Filed 2017·Granted Jun 25, 2019·1 cites·10 claims
- 1068US10411167B2Semiconductor light emitting apparatus, stem partSUMITOMO ELECTRIC INDUSTRIES·Filed 2017·Granted Sep 10, 2019·1 cites·16 claims
- 1157US2018372966A1Optical device, optical processing device, and method of producing the optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Application pending·0 cites
- 1255US4358532APhotographic elementFUJI PHOTO FILM CO LTD·Filed 1981·Granted Nov 9, 1982·15 cites·13 claims
- 1353US4310693Ao-Aminophenol compoundsFUJI PHOTO FILM CO LTD·Filed 1980·Granted Jan 12, 1982·6 cites·7 claims
- 1453US2024142495A1Testing device, testing method, and non-transitory storage medium storing testing programSUMITOMO ELECTRIC INDUSTRIES·Filed 2023·Application pending·0 cites
- 1551US4304847AColor image forming dye bleach processFUJI PHOTO FILM CO LTD·Filed 1979·Granted Dec 8, 1981·2 cites·39 claims
- 1649US4594426ABenzoxazole derivative intermediates for synthesis of dye releasing redox compoundsFUJI PHOTO FILM CO LTD·Filed 1981·Granted Jun 10, 1986·5 cites·3 claims
- 1747US4957848AHeat developable color light-sensitive material with dye developersFUJI PHOTO FILM CO LTD·Filed 1988·Granted Sep 18, 1990·4 cites·10 claims
- 1845US4551423APhotographic light-sensitive material with nucleophilic displacement dye releasersFUJI PHOTO FILM CO LTD·Filed 1984·Granted Nov 5, 1985·4 cites·17 claims
- 1945US2019302380A1Optical module coupled with photonic device and optical apparatus implementing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Application pending·0 cites
- 2043US2009182149A1Salt of sulfinylbenzimidazole compound, and crystal and amorphous form thereofKAWAHARA TETSUYA·Filed 2006·Application pending·0 cites
- 2142US4766056ALight-sensitive material with compounds reactive with dye developersFUJI PHOTO FILM CO LTD·Filed 1986·Granted Aug 23, 1988·3 cites·7 claims
- 2242US2019033534A1Optical fiber connector, optical apparatus, optical transceiver, and method of manufacturing optical fiber connectorSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Application pending·0 cites
- 2340US2019067260A1Semiconductor device and method for manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Application pending·0 cites
- 2438US2017059790A1Optical communication apparatusSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Application pending·0 cites
- 2535US6087651AHighly sensitive light reception elementJAPAN SCIENCE & TECH CORP·Filed 1998·Granted Jul 11, 2000·6 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →