Inventor
SHIZUKA KOHEI
JP8 patents
⚠️ This page may combine multiple inventors who share the name “SHIZUKA KOHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUI TOATSU CHEMICALS
7 patentsUS5080495AJan 14, 1992
Method and apparatus for measuring thermal diffusivity by ac joule-heating
MITSUI TOATSU CHEMICALS51 citations89
US4785069ANov 15, 1988
Preparation process of heat-resistant polymers from polycarboxylic acids or anhydrides in the presence of an alkali metal fluoride and quaternary onium salt
MITSUI TOATSU CHEMICALS7 citations73
US4736008AApr 5, 1988
Preparation process of heat-resistant polymers from polycarboxcylic acids and anhydrides in the presence of an alkali metal fluoride
MITSUI TOATSU CHEMICALS14 citations73
US4345101AAug 17, 1982
Process for purifying an aqueous solution of acrylamide
MITSUI TOATSU CHEMICALS13 citations71
US4795795AJan 3, 1989
Catalytic preparation of polyamide or polyamide-polymide with N,N'-dimethyl alkylene urea solvent
MITSUI TOATSU CHEMICALS5 citations61
US4921933AMay 1, 1990
Aromatic polyamide molded article having storage modulus
MITSUI TOATSU CHEMICALS2 citations60
US4108893AAug 22, 1978
Purification of an aqueous solution of acrylamide
MITSUI TOATSU CHEMICALS4 citations55