Inventor · disambiguated record
Shumpei Shimizu
Also filed as: SHIMIZU SHUMPEI
8 granted patents·1 pending application·213 citations·filing 1984–2024
89Inventor score
Files withTAMA CHEMICALS CO LTD4TOSHIBA KK2MOSES LAKE IND INC1TAMA CHEMICAL CO LTD1TOYOTA MOTOR CO LTD1
Top patents by PatentIndex Score
9 records- 0189US4634509AMethod for production of aqueous quaternary ammonium hydroxide solutionTAMA CHEMICAL CO LTD·Filed 1986·Granted Jan 6, 1987·56 cites·5 claims
- 0288US4572769AMethod of manufacturing tetramethyl ammonium hydroxideTAMA CHEMICALS CO LTD·Filed 1984·Granted Feb 25, 1986·38 cites·1 claims
- 0379US4857290AProcess for producing silica of high purityMOSES LAKE IND INC·Filed 1988·Granted Aug 15, 1989·30 cites·12 claims
- 0475US4892625AMethod for producing high purity chemicalsTAMA CHEMICALS CO LTD·Filed 1987·Granted Jan 9, 1990·14 cites·4 claims
- 0567US6426294B1Copper-based metal polishing composition, method for manufacturing a semiconductor device, polishing composition, aluminum-based metal polishing composition, and tungsten-based metal polishing compositionTOSHIBA KK·Filed 1999·Granted Jul 30, 2002·29 cites·21 claims
- 0666US6861010B2Copper-based metal polishing composition, method for manufacturing a semiconductor device, polishing composition, aluminum-based metal polishing composition, and tungsten-based metal polishing compositionTOSHIBA KK·Filed 2002·Granted Mar 1, 2005·9 cites·7 claims
- 0758US5545309AMethod of processing organic quaternary ammonium hydroxide-containing waste liquidTAMA CHEMICALS CO LTD·Filed 1995·Granted Aug 13, 1996·18 cites·20 claims
- 0857US5439564AMethod of processing organic quaternary ammonium hydroxide-containing waste liquidTAMA CHEMICALS CO LTD·Filed 1993·Granted Aug 8, 1995·19 cites·5 claims
- 0952US2025208845A1Information processing device and information processing methodTOYOTA MOTOR CO LTD·Filed 2024·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →