Inventor · disambiguated record
Masamichi Soumai
Also filed as: SOUMAI MASAMICHI
3 granted patents·54 citations·filing 1982–1982
72Inventor score
Files withNIPPON ZEON CO3
Top patents by PatentIndex Score
3 records- 0180US4555312AProcess for separating highly pure butene-1 or butene-1/isobutene mixture from C4 hydrocarbon fractionNIPPON ZEON CO·Filed 1982·Granted Nov 26, 1985·18 cites·6 claims
- 0273US4515661AProcess for separating highly pure butene-1 and butene-2NIPPON ZEON CO·Filed 1982·Granted May 7, 1985·13 cites·3 claims
- 0371US4556461AProcess for separating highly pure butene-1 or butene-1/isobutene mixture from C4 hydrocarbon fractionNIPPON ZEON CO·Filed 1982·Granted Dec 3, 1985·23 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →