Inventor · disambiguated record
Masayuki Umeno
Also filed as: UMENO MASAYUKI
4 granted patents·36 citations·filing 1985–1999
74Inventor score
Files withHOKKO CHEM IND CO4
Top patents by PatentIndex Score
4 records- 0177US4613373ATetraarylboron-ammonium complexes and their usesHOKKO CHEM IND CO·Filed 1985·Granted Sep 23, 1986·18 cites·5 claims
- 0241US6274251B1Semiconductor encapsulating epoxy resin composition and semiconductor deviceHOKKO CHEM IND CO·Filed 1999·Granted Aug 14, 2001·9 cites·12 claims
- 0339US6168872B1Semiconductor encapsulating epoxy resin composition and semiconductor deviceHOKKO CHEM IND CO·Filed 1998·Granted Jan 2, 2001·8 cites·20 claims
- 0433US4761493APreparation process of quaternary phosphonium hydroxideHOKKO CHEM IND CO·Filed 1987·Granted Aug 2, 1988·1 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →