Inventor · disambiguated record
Ryoichi Shimizugawa
Also filed as: SHIMIZUGAWA RYOICHI
4 granted patents·46 citations·filing 1990–1997
77Inventor score
Top patents by PatentIndex Score
4 records- 0164US5749935AManganese fertilizerJAPAN METALS & CHEM CO LTD·Filed 1994·Granted May 12, 1998·20 cites·4 claims
- 0256US5746902AElectrolytic manganese dioxide and method of manufacturing the sameJAPAN METALS & CHEM CO LTD·Filed 1995·Granted May 5, 1998·14 cites·3 claims
- 0342US4997531AProcess for manufacturing electrolytic manganese oxideJAPAN METALS & CHEMICAL CO INC·Filed 1990·Granted Mar 5, 1991·7 cites·7 claims
- 0438US5938910AElectrolytic manganese dioxide and method of manufacturing the sameJAPAN METALS & CHEM CO LTD·Filed 1997·Granted Aug 17, 1999·5 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →