Inventor · disambiguated record
Sumio Soya
Also filed as: SOYA SUMIO
8 granted patents·46 citations·filing 1988–1999
85Inventor score
Files withSHOWA DENKO KK8
Top patents by PatentIndex Score
8 records- 0162US5453537AMethod for preparing an N-phosphonomethylglycineSHOWA DENKO KK·Filed 1994·Granted Sep 26, 1995·8 cites·8 claims
- 0251US6190451B1Admixture of cement compositionSHOWA DENKO KK·Filed 1999·Granted Feb 20, 2001·13 cites·12 claims
- 0345US5032567AAdditive for heat-sensitive recording material, the recording material and method for production of the recording materialSHOWA DENKO KK·Filed 1990·Granted Jul 16, 1991·6 cites·3 claims
- 0444US5929006ACleaning agent compositionSHOWA DENKO KK·Filed 1997·Granted Jul 27, 1999·8 cites·11 claims
- 0543US6013612ACleaning agent compositionSHOWA DENKO KK·Filed 1999·Granted Jan 11, 2000·7 cites·14 claims
- 0642US6433211B1Process for producing cyanobenzoic acid derivativesSHOWA DENKO KK·Filed 1999·Granted Aug 13, 2002·2 cites·48 claims
- 0729US6271397B1L-ascorbic acid-2-phosphoric acid potassium crystal and method for producing the sameSHOWA DENKO KK·Filed 1999·Granted Aug 7, 2001·1 cites·3 claims
- 0828US4939269A3-substituted hydantoinsSHOWA DENKO KK·Filed 1988·Granted Jul 3, 1990·1 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →