Inventor · disambiguated record
Isao Kumagai
Also filed as: KUMAGAI ISAO
2 granted patents·1 pending application·22 citations·filing 1982–2022
59Inventor score
Top patents by PatentIndex Score
3 records- 0162US4417970AElectrolytic cell for ion exchange membrane methodCHLORINE ENG CORP LTD·Filed 1982·Granted Nov 29, 1983·15 cites·5 claims
- 0248US2025141325A1Armature manufacturing method and armatureAISIN CORP·Filed 2022·Application pending·0 cites
- 0340US4663013ACation exchange membraneCHLORINE ENG CORP LTD·Filed 1985·Granted May 5, 1987·7 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →