Inventor
GUPTA BALARAM
US23 patents
⚠️ This page may combine multiple inventors who share the name “GUPTA BALARAM”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOECHST CELANESE CORP
22 patentsUS4868274ASep 19, 1989
Polyanhydride from carboxy aryloxy alkanoic acid
HOECHST CELANESE CORP59 citations96
US4814399AMar 21, 1989
Sulfoalkylation of polybenzimidazole
HOECHST CELANESE CORP40 citations92
US4997892AMar 5, 1991
Sulfalkylation of hydroxyethylated polybenzimidazole polymers
HOECHST CELANESE CORP24 citations90
US4877843AOct 31, 1989
Selective hydrolysis of copolymers of para-acetoxy styrene and allyl esters of ethylenically unsaturated acids
HOECHST CELANESE CORP22 citations82
US5140093AAug 18, 1992
Melt-processable thermotropic polyesters having fluorine containing linking groups
HOECHST CELANESE CORP8 citations74
US4868265ASep 19, 1989
Polyanhydride process from bis(trimethylsilyl) ester of dicarboxylic acid
HOECHST CELANESE CORP9 citations73
US4857601AAug 15, 1989
Selective hydrolysis of copolymers of para-acetoxy styrene and dialkyl muconates or alkyl sorbates
HOECHST CELANESE CORP17 citations73
US4826890AMay 2, 1989
Radiation curable copolymers of p-acetoxystyrene and dialkyl muconates
HOECHST CELANESE CORP9 citations73
US5393848AFeb 28, 1995
Process for forming improved liquid crystalline polymer blends
HOECHST CELANESE CORP10 citations70
US4942026AJul 17, 1990
Novel synthesis of sodipotassic copper tube silicates
HOECHST CELANESE CORP7 citations68
US4869994ASep 26, 1989
Photoresist compositions based on hydroxystyrene copolymers
HOECHST CELANESE CORP6 citations68
US5731401AMar 24, 1998
Process for the preparation of thermotropic aromatic polyesters directly from dialkyl aromatic esters
HOECHST CELANESE CORP10 citations66
US5306800AApr 26, 1994
Pseudo network condensation polymers
HOECHST CELANESE CORP3 citations63
US5023314AJun 11, 1991
Novel polyarylate compositions having improved properties
HOECHST CELANESE CORP4 citations63
US5120793AJun 9, 1992
Process for preparing ether derivatives of polymers of p-hydroxystyrene
HOECHST CELANESE CORP3 citations62
US5004762AApr 2, 1991
Radiation curable compositions based on 4-acetoxystyrene and 4-hydroxystyrene homopolymers
HOECHST CELANESE CORP4 citations62
US4929537AMay 29, 1990
Photoresist compositions based on hydroxystyrene copolymers
HOECHST CELANESE CORP2 citations62
US4826891AMay 2, 1989
Radiation curable copolymers of p-acetoxystyrene with allyl esters of ethylenically unsaturated acids or alkadienes
HOECHST CELANESE CORP6 citations62
US4824758AApr 25, 1989
Photoresist compositions based on acetoxystyrene copolymers
HOECHST CELANESE CORP2 citations57
US5143947ASep 1, 1992
Radiation curable composition based on 4-hydroxystyrene copolymers
HOECHST CELANESE CORP1 citations52
US5001215AMar 19, 1991
Aromatic polyester from 1,3-bis(p-carboxyphenoxy)propane
HOECHST CELANESE CORP0 citations52
US4937319AJun 26, 1990
Process for producing aromatic polyesters
HOECHST CELANESE CORP1 citations52