P

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 patents
US4868274ASep 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

HOECHST CELANSE CORP

1 patent