Inventor · disambiguated record
Keiichi Ishikawa
Also filed as: ISHIKAWA KEIICHI
60 granted patents·9 pending applications·417 citations·filing 1977–2024
98Inventor score
Files withEBARA CORP13HONDA MOTOR CO LTD10OHASHI TATSUYUKI7MITSUI TOATSU CHEMICALS5HEWLETT PACKARD DEVELOPMENT CO4
Top patents by PatentIndex Score
69 records- 0195US5202212AToner composition for electrophotographyMITSUI TOATSU CHEMICALS·Filed 1992·Granted Apr 13, 1993·65 cites·6 claims
- 0288US4833057AToner composition for the electrophotographyMITSUI TOATSU CHEMICALS·Filed 1987·Granted May 23, 1989·34 cites·9 claims
- 0387US10978315B2Vacuum evacuation systemEBARA CORP·Filed 2015·Granted Apr 13, 2021·5 cites·9 claims
- 0483US8360914B2Power transmitting apparatusesFCC KK·Filed 2011·Granted Jan 29, 2013·7 cites·16 claims
- 0582US6736635B1Combustor for exhaust gas treatmentEBARA CORP·Filed 2000·Granted May 18, 2004·26 cites·13 claims
- 0681US5317937AControl system for vehicle automatic transmissionHONDA MOTOR CO LTD·Filed 1992·Granted Jun 7, 1994·34 cites·41 claims
- 0780US8246511B2Power transmitting apparatusesOHASHI TATSUYUKI·Filed 2011·Granted Aug 21, 2012·5 cites·10 claims
- 0877US8323148B2Power transmitting apparatusesOHASHI TATSUYUKI·Filed 2011·Granted Dec 4, 2012·4 cites·13 claims
- 0976US9822974B2Vacuum pump with abatement functionEBARA CORP·Filed 2014·Granted Nov 21, 2017·4 cites·10 claims
- 1075US9364786B2Exhaust gas abatement apparatusEBARA CORP·Filed 2014·Granted Jun 14, 2016·2 cites·7 claims
- 1174US9740125B2Toner for developing electrostatic charge image and method for preparing the sameSAMSUNG ELECTRONICS CO LTD·Filed 2016·Granted Aug 22, 2017·1 cites·5 claims
- 1274US4768635AControl for the clutch of a fluid torque converter in a vehicular transmissionHONDA MOTOR CO LTD·Filed 1986·Granted Sep 6, 1988·26 cites·13 claims
- 1373US8245826B2Power transmitting apparatusOHASHI TATSUYUKI·Filed 2011·Granted Aug 21, 2012·4 cites·16 claims
- 1472US10261430B2Photoreceptor for electrophotography and image forming apparatus employing the sameSAMSUNG ELECTRONICS CO LTD·Filed 2017·Granted Apr 16, 2019·1 cites·23 claims
- 1570US8801573B2Power transmitting apparatusesOHASHI TATSUYUKI·Filed 2012·Granted Aug 12, 2014·2 cites·13 claims
- 1669US8424661B2Power transmitting apparatusASATSUKE SHOUJI·Filed 2012·Granted Apr 23, 2013·3 cites·9 claims
- 1768US9956524B2Vacuum pump with abatement functionEBARA CORP·Filed 2014·Granted May 1, 2018·1 cites·9 claims
- 1868US8262539B2Power transmitting apparatusOHASHI TATSUYUKI·Filed 2011·Granted Sep 11, 2012·3 cites·16 claims
- 1968US8205534B2Cutting methods and cutting apparatusYAZAWA TAKANORI·Filed 2007·Granted Jun 26, 2012·10 cites·12 claims
- 2066US8413546B2Power transmitting apparatusesOHASHI TATSUYUKI·Filed 2011·Granted Apr 9, 2013·2 cites·5 claims
- 2166US7607914B2Combustion type waste gas treatment systemEBARA CORP·Filed 2007·Granted Oct 27, 2009·3 cites·3 claims
- 2266US2024425307A1Powder supply deviceFUJIFILM CORP·Filed 2024·Application pending·0 cites
- 2365US8216206B2Disposable absorbent articleFUJIOKA MASARU·Filed 2010·Granted Jul 10, 2012·3 cites·9 claims
- 2465US6948929B2Combustion type waste gas treatment systemEBARA CORP·Filed 2001·Granted Sep 27, 2005·10 cites·3 claims
- 2563US10632419B2Vacuum pump with abatement functionEBARA CORP·Filed 2018·Granted Apr 28, 2020·0 cites·7 claims
- 2663US8026774B2Radio frequency signal transmission method with coaxial connection having a dielectric material for impedance matchingFUJITSU LTD·Filed 2011·Granted Sep 27, 2011·1 cites·4 claims
- 2762US10465119B2Externally heated carbonization furnaceMITSUBISHI HEAVY IND ENVIRONMENTAL & CHEMICAL ENGINNERING CO LTD·Filed 2014·Granted Nov 5, 2019·1 cites·4 claims
- 2862US7952449B2Coaxial connector having a dielectric material for impedance matchingFUJITSU LTD·Filed 2008·Granted May 31, 2011·6 cites·16 claims
- 2961US6638343B1Exhaust gas treating deviceEBARA CORP·Filed 1999·Granted Oct 28, 2003·25 cites·28 claims
- 3061US4488457AMalfunction prevention device of automotive hydraulic transmissionHONDA MOTOR CO LTD·Filed 1982·Granted Dec 18, 1984·16 cites·1 claims
- 3160US10274854B2Toner for developing electrostatic charge image and method for preparing the sameSAMSUNG ELECTRONICS CO LTD·Filed 2017·Granted Apr 30, 2019·0 cites·13 claims
- 3259US10184082B2Biomass pyrolysis apparatus, and power generation systemMITSUBISHI HEAVY IND ENVIRONMENTAL & CHEMICAL ENG CO LTD·Filed 2014·Granted Jan 22, 2019·1 cites·3 claims
- 3358US7005513B1Functionalized glycosaminoglycan polymer and medical instruments and drugs by using the sameNETECH INC·Filed 2000·Granted Feb 28, 2006·4 cites·9 claims
- 3457US12372892B2Toner particle with amorphous polyester resinHEWLETT PACKARD DEVELOPMENT CO·Filed 2020·Granted Jul 29, 2025·0 cites·20 claims
- 3557US7115702B2Binder resin for toner and tonersMITSUI CHEMICALS INC·Filed 2003·Granted Oct 3, 2006·4 cites·7 claims
- 3657US2024050966A1Powder supply deviceFUJIFILM CORP·Filed 2023·Application pending·0 cites
- 3756US9302576B2Power transmitting apparatus for a hybrid vehicleOHASHI TATSUYUKI·Filed 2011·Granted Apr 5, 2016·1 cites·19 claims
- 3854US4941559AWet friction member, and wet frictional engagement apparatus for a transmission using the sameISHIKAWA KEIICHI·Filed 1989·Granted Jul 17, 1990·12 cites·4 claims
- 3952US4561114ACochannel interference measurement systemNIPPON TELEGRAPH & TELEPHONE·Filed 1983·Granted Dec 24, 1985·18 cites·6 claims
- 4051US2025205093A1Stretchable sheet structure and disposable absorbent productLIVEDO CORP·Filed 2022·Application pending·0 cites
- 4151US2025205092A1Disposable absorbent productLIVEDO CORP·Filed 2022·Application pending·0 cites
- 4250US10143964B2Vacuum pump with abatement functionEBARA CORP·Filed 2014·Granted Dec 4, 2018·0 cites·7 claims
- 4349US8758198B2Power transmitting apparatusesFCC KK·Filed 2012·Granted Jun 24, 2014·0 cites·23 claims
- 4449US8269576B2Coaxial connector having a dielectric material for impedance matchingYAGISAWA TAKATOSHI·Filed 2011·Granted Sep 18, 2012·0 cites·15 claims
- 4548US7112060B2Burner for treating waste gasEBARA CORP·Filed 2004·Granted Sep 26, 2006·3 cites·15 claims
- 4648US4963456AElectrophotographic tonerMITSUI TOATSU CHEMICALS·Filed 1987·Granted Oct 16, 1990·7 cites·16 claims
- 4747US2005271988A1Combustion type waste gas treatment systemKOMAI TETSUO·Filed 2005·Application pending·0 cites
- 4846US4982623AMethod of controlling the automatic transmission of a vehicleHONDA MOTOR CO LTD·Filed 1989·Granted Jan 8, 1991·9 cites·2 claims
- 4945US10641272B2Vacuum pump with abatement functionEBARA CORP·Filed 2015·Granted May 5, 2020·0 cites·16 claims
- 5045US5427883AToner composition for electrophotographyMITSUI TOATSU CHEMICALS·Filed 1994·Granted Jun 27, 1995·5 cites·10 claims
Showing the top 50 of 69 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →