Inventor
HIGASHI FUKUJI
8 patents
⚠️ This page may combine multiple inventors who share the name “HIGASHI FUKUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO CHEMICAL CO
7 patentsUS4118374AOct 3, 1978
Production of aromatic polyamides from dicarboxylic acid and diamine
SUMITOMO CHEMICAL CO7 citations72
US4045417AAug 30, 1977
Production of aromatic polyamides
SUMITOMO CHEMICAL CO9 citations72
US3932364AJan 13, 1976
Production of polyamides in the presence of a phosphorus acid ester and an organic base
SUMITOMO CHEMICAL CO10 citations72
US4173563ANov 6, 1979
Phosphonium salt and its use
SUMITOMO CHEMICAL CO2 citations61
US4059603ANov 22, 1977
Esterification of carboxylic acids by contact with a phosphonium salt
SUMITOMO CHEMICAL CO0 citations51
US3974219AAug 10, 1976
Phosphonium salt and its use
SUMITOMO CHEMICAL CO1 citations51
US4120853AOct 17, 1978
Esterification of carboxylic acids by contact with a phosphonium salt
SUMITOMO CHEMICAL CO0 citations40