Inventor · disambiguated record
Keiichi Nishikawa
Also filed as: NISHIKAWA KEIICHI
15 granted patents·3 pending applications·174 citations·filing 1986–2023
92Inventor score
Top patents by PatentIndex Score
18 records- 0182US10553463B2Temperature control system, semiconductor manufacturing device, and temperature control methodTOKYO ELECTRON LTD·Filed 2018·Granted Feb 4, 2020·4 cites·12 claims
- 0282US9984908B2Temperature control system, semiconductor manufacturing device, and temperature control methodTOKYO ELECTRON LTD·Filed 2012·Granted May 29, 2018·7 cites·12 claims
- 0381US5942744ACard drive apparatus and cardMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Aug 24, 1999·35 cites·3 claims
- 0478US6016959ACard drive apparatus and cardMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Jan 25, 2000·30 cites·15 claims
- 0578US5153788AMethod of recording and detecting servo information for positioning magnetic headMITSUBISHI ELECTRIC CORP·Filed 1990·Granted Oct 6, 1992·30 cites·10 claims
- 0663US11566723B2Flow path switching valve and manufacturing method thereforCKD CORP·Filed 2020·Granted Jan 31, 2023·0 cites·10 claims
- 0762US5870248AFrame for flexible disk drive unit having distortion prevention hole and 2 ribs formed around motor attaching holeMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Feb 9, 1999·18 cites·7 claims
- 0861US5616994ADrive circuit for brushless motorMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Apr 1, 1997·26 cites·35 claims
- 0957US10907748B2Flow path switching valve and manufacturing method thereforCKD CORP·Filed 2018·Granted Feb 2, 2021·0 cites·8 claims
- 1056US11125342B2Spool valveCKD CORP·Filed 2019·Granted Sep 21, 2021·0 cites·17 claims
- 1154US2025191895A1Flowrate control unit for temperature adjustment and semiconductor manufacturing deviceCKD CORP·Filed 2023·Application pending·0 cites
- 1252US4757395AWaveform equalizing circuitMITSUBISHI ELECTRIC CORP·Filed 1986·Granted Jul 12, 1988·9 cites·3 claims
- 1349US11965607B2Butterfly valveCKD CORP·Filed 2021·Granted Apr 23, 2024·0 cites·8 claims
- 1445US2009095364A1Fluid flow distribution and supply unit and flow distribution control programCKD CORP·Filed 2008·Application pending·0 cites
- 1544US5327299AMethod of encoding position informationMITSUBISHI ELECTRIC CORP·Filed 1993·Granted Jul 5, 1994·6 cites·21 claims
- 1643US2010116484A1Temperature control deviceCKD CORP·Filed 2009·Application pending·0 cites
- 1735US5996111AIdentification sequence issuing device and identification sequence verification deviceMITSUBISHI ELECTRIC CORP·Filed 1996·Granted Nov 30, 1999·7 cites·12 claims
- 1825US5204788ADigital magnetic recording and reproducing circuit for suppressing generation of asymmetryMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Apr 20, 1993·2 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →