Inventor · disambiguated record
Keizo Tatsukawa
Also filed as: TATSUKAWA KEIZO
4 granted patents·13 citations·filing 1972–1975
69Inventor score
Files withKYOWA HAKKO KOGYO KK4
Top patents by PatentIndex Score
4 records- 0160US3936469AProcess for preparing N-carboxylic anhydrides of amino acidsKYOWA HAKKO KOGYO KK·Filed 1973·Granted Feb 3, 1976·5 cites·5 claims
- 0237US3945952ANovel resinous material by reaction of epoxy compounds and polyglutamic acid saltsKYOWA HAKKO KOGYO KK·Filed 1972·Granted Mar 23, 1976·3 cites·20 claims
- 0329US3932359APolyurethanes based on amino-acids or derivatives thereofKYOWA HAKKO KOGYO KK·Filed 1973·Granted Jan 13, 1976·4 cites·19 claims
- 0427US4039710ANovel resinous materialKYOWA HAKKO KOGYO KK·Filed 1975·Granted Aug 2, 1977·1 cites·27 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →