Inventor · disambiguated record
Kohei Shizuka
Also filed as: SHIZUKA KOHEI
8 granted patents·105 citations·filing 1977–1990
87Inventor score
Top patents by PatentIndex Score
8 records- 0177US5080495AMethod and apparatus for measuring thermal diffusivity by ac joule-heatingMITSUI TOATSU CHEMICALS·Filed 1990·Granted Jan 14, 1992·51 cites·32 claims
- 0276US4345101AProcess for purifying an aqueous solution of acrylamideMITSUI TOATSU CHEMICALS·Filed 1981·Granted Aug 17, 1982·13 cites·9 claims
- 0370US4736008APreparation process of heat-resistant polymers from polycarboxcylic acids and anhydrides in the presence of an alkali metal fluorideMITSUI TOATSU CHEMICALS·Filed 1986·Granted Apr 5, 1988·14 cites·5 claims
- 0453US4758649AHeat resistant organic synthetic fibers and process for producing the sameKURARAY CO·Filed 1987·Granted Jul 19, 1988·9 cites·8 claims
- 0552US4785069APreparation process of heat-resistant polymers from polycarboxylic acids or anhydrides in the presence of an alkali metal fluoride and quaternary onium saltMITSUI TOATSU CHEMICALS·Filed 1987·Granted Nov 15, 1988·7 cites·9 claims
- 0649US4108893APurification of an aqueous solution of acrylamideMITSUI TOATSU CHEMICALS·Filed 1977·Granted Aug 22, 1978·4 cites·5 claims
- 0741US4795795ACatalytic preparation of polyamide or polyamide-polymide with N,N'-dimethyl alkylene urea solventMITSUI TOATSU CHEMICALS·Filed 1986·Granted Jan 3, 1989·5 cites·21 claims
- 0831US4921933AAromatic polyamide molded article having storage modulusMITSUI TOATSU CHEMICALS·Filed 1988·Granted May 1, 1990·2 cites·7 claims
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