Inventor · disambiguated record
Eiji Ishikawa
Also filed as: ISHIKAWA EIJI
26 granted patents·8 pending applications·612 citations·filing 1984–2025
96Inventor score
Top patents by PatentIndex Score
34 records- 0195US6521538B2Method of forming a trench with a rounded bottom in a semiconductor deviceDENSO CORP·Filed 2001·Granted Feb 18, 2003·127 cites·26 claims
- 0289US6482701B1Integrated gate bipolar transistor and method of manufacturing the sameDENSO CORP·Filed 2000·Granted Nov 19, 2002·47 cites·12 claims
- 0389US4657853AImmunoassays utilizing covalent conjugates of polymerized enzyme and antibodyDU PONT·Filed 1984·Granted Apr 14, 1987·68 cites·22 claims
- 0487US6090718ADry etching method for semiconductor substrateDENSO CORP·Filed 1997·Granted Jul 18, 2000·96 cites·44 claims
- 0585US5888834AImmunoassay plate and use thereofSUMITOMO PHARMA·Filed 1995·Granted Mar 30, 1999·109 cites·20 claims
- 0679US7684713B2Phase control apparatus and optical DQPSK receiverFUJITSU LTD·Filed 2006·Granted Mar 23, 2010·9 cites·15 claims
- 0778US9407396B2Wavelength multiplexing apparatus and methodFUJITSU LTD·Filed 2014·Granted Aug 2, 2016·4 cites·14 claims
- 0877US7312918B2Optical transmission system having function of correcting noise light due to Raman amplificationFUJITSU LTD·Filed 2005·Granted Dec 25, 2007·7 cites·16 claims
- 0977US7251072B2Optical transmission systemFUJITSU LTD·Filed 2003·Granted Jul 31, 2007·13 cites·34 claims
- 1076US6797588B2Method for manufacturing a semiconductor device having a trench and a thick insulation film at the trench openingDENSO CORP·Filed 2002·Granted Sep 28, 2004·23 cites·13 claims
- 1172US7541257B2Semiconductor device having three-dimensional construction and method for manufacturing the sameDENSO CORP·Filed 2006·Granted Jun 2, 2009·2 cites·12 claims
- 1270US5618120ARecording apparatus having means for detecting the positions of a recording mediumCANON KK·Filed 1994·Granted Apr 8, 1997·25 cites·7 claims
- 1369US2025249723A1Cooling structure for vehicleTOYOTA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 1467US2025332908A1Vehicle front structureTOYOTA MOTOR CO LTD·Filed 2025·Application pending·0 cites
- 1565US2024270048A1Heat exchange system for battery electric vehiclesTOYOTA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 1664US5236849AMethod of high sensitivity immunoassayISHIKAWA EIJI·Filed 1991·Granted Aug 17, 1993·28 cites·22 claims
- 1763US7586672B2Optical transmission systemFUJITSU LTD·Filed 2007·Granted Sep 8, 2009·2 cites·2 claims
- 1862US6063564ACirculation thin layer liquid phase assaySUMITOMO PHARMA·Filed 1998·Granted May 16, 2000·30 cites·7 claims
- 1961US2025206129A1Grille shutter deviceTOYOTA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 2059US6765707B2Variable slit width device for spectroscopeANDO ELECTRIC·Filed 2002·Granted Jul 20, 2004·7 cites·15 claims
- 2154US12467071B2Method for producing secreted β-galactosidaseYAKULT HONSHA KK·Filed 2019·Granted Nov 11, 2025·0 cites·3 claims
- 2254US9388474B2Method for detecting toxin-producing Clostridium difficileKUBOTA HIROYUKI·Filed 2012·Granted Jul 12, 2016·0 cites·3 claims
- 2353US11597009B2Ni—Fe base alloy powder, and method for producing alloy coating using said Ni—Fe base alloy powderEBARA CORP·Filed 2019·Granted Mar 7, 2023·0 cites·1 claims
- 2453US11597992B2Ni-based thermal spraying alloy powder and method for manufacturing alloy coatingEBARA ENV PLANT CO LTD·Filed 2018·Granted Mar 7, 2023·0 cites·7 claims
- 2550US2011147050A1Printed wiring board and method for manufacturing printed wiring boardISHIKAWA EIJI·Filed 2009·Application pending·0 cites
- 2649US10637564B2Transmission apparatus, transmission system, and transmission methodFUJITSU LTD·Filed 2019·Granted Apr 28, 2020·0 cites·12 claims
- 2748US9810135B2Cooling fan device for vehicleISHIKAWA EIJI·Filed 2013·Granted Nov 7, 2017·1 cites·5 claims
- 2848US7642194B2Method for etching and apparatus for etchingDENSO CORP·Filed 2006·Granted Jan 5, 2010·0 cites·10 claims
- 2948US2025040854A1Brain wave measuring device and brain wave measuring methodSUMITOMO BAKELITE CO·Filed 2022·Application pending·0 cites
- 3047US5236830AMethod of assay for antigenISHIKAWA EIJI·Filed 1989·Granted Aug 17, 1993·11 cites·7 claims
- 3146US6750965B2Mirror supporting structure for monochromatorANDO ELECTRIC·Filed 2002·Granted Jun 15, 2004·1 cites·6 claims
- 3238US2003063280A1MonochromatorFiled 2002·Application pending·0 cites
- 3338US2018287726A1Transmission device and transmission methodFUJITSU LTD·Filed 2018·Application pending·0 cites
- 3428US5137807AMethod for determining beta-subunit of human prolyl 4-hydroxylase by immunoassay to detect hepatic diseaseFUJI YAKUHIN KOGYO KK·Filed 1989·Granted Aug 11, 1992·2 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →