Inventor · disambiguated record
Seigo Okumura
Also filed as: OKUMURA SEIGO
4 granted patents·41 citations·filing 1987–1989
75Inventor score
Files withMITSUBISHI CHEM IND4
Top patents by PatentIndex Score
4 records- 0159US4840640APolarizing film: polymer film base containing substituted anthraquinone dichroic dyeMITSUBISHI CHEM IND·Filed 1987·Granted Jun 20, 1989·21 cites·6 claims
- 0253US4782132AProcess for producing a copolyesterMITSUBISHI CHEM IND·Filed 1987·Granted Nov 1, 1988·11 cites·15 claims
- 0341US4841057ACyclic imido anthraquinone compoundsMITSUBISHI CHEM IND·Filed 1988·Granted Jun 20, 1989·7 cites·2 claims
- 0431US4921959AAnthraquinone compounds and polarizing film containing the sameMITSUBISHI CHEM IND·Filed 1989·Granted May 1, 1990·2 cites·3 claims
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