Inventor
CAMPBELL JOHN R
38 patents
⚠️ This page may combine multiple inventors who share the name “CAMPBELL JOHN R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GEN ELECTRIC
35 patentsUS5530052AJun 25, 1996
Layered minerals and compositions comprising the same
GEN ELECTRIC151 citations97
US5124410AJun 23, 1992
Reactive graft polymers
GEN ELECTRIC54 citations96
US4814392AMar 21, 1989
Silicone-polyarylene ether block copolymers, and method for making
GEN ELECTRIC53 citations92
US4525567AJun 25, 1985
Ionically cross-linked siloxane polymers
GEN ELECTRIC27 citations92
US4523002AJun 11, 1985
Ionically cross-linked siloxane polymers
GEN ELECTRIC48 citations92
US4493926AJan 15, 1985
Dissociating ionically cross-linked siloxane polymers
GEN ELECTRIC37 citations92
US4455409AJun 19, 1984
Method for making bisphenol catalysts
GEN ELECTRIC34 citations92
US4374233AFeb 15, 1983
Block copolymers of polyphenylene oxides and non-sterically-hindered high molecular weight aromatic polycarbonates
GEN ELECTRIC28 citations92
US6350804B2Feb 26, 2002
Compositions with enhanced ductility
GEN ELECTRIC19 citations91
US5262511ANov 16, 1993
Branched aromatic carbonate polymer
GEN ELECTRIC37 citations89
US5153290AOct 6, 1992
Polymers of ethylenically unsaturated cyclic ortho esters
GEN ELECTRIC19 citations81
US4496705AJan 29, 1985
Synthesis of zwitterionic siloxane polymers
GEN ELECTRIC21 citations81
US4840982AJun 20, 1989
Polymer blends containing ionomeric elastomers
GEN ELECTRIC20 citations80
US4608430AAug 26, 1986
Polycarbonate exhibiting improved heat resistance from diphenol containing disubstituted phenylene radical
GEN ELECTRIC10 citations74
US4533722AAug 6, 1985
Interfacial polycondensation polycarbonate process with quaternary phosphonium amino halide catalyst
GEN ELECTRIC7 citations74
US4507436AMar 26, 1985
Compositions of polyphenylene ether resin and poly(tetra-alkylated bisphenol) having reduced melt viscosity
GEN ELECTRIC18 citations74
US4471105ASep 11, 1984
Interfacial polycondensation polycarbonate process with quaternary phosphonium amino halide catalyst
GEN ELECTRIC14 citations74
US4156790AMay 29, 1979
Isomerization of dihydroxydiphenyl compounds
GEN ELECTRIC7 citations74
US5039742AAug 13, 1991
Polyphenylene ether-polyester molding compositions useful under severe molding conditions
GEN ELECTRIC7 citations73
US4777221AOct 11, 1988
Polyphenylene ether-polycarbonate copolymers and method of preparation
GEN ELECTRIC6 citations73
US4384108AMay 17, 1983
Two-phase interfacial polycarbonate process
GEN ELECTRIC16 citations73
US5132361AJul 21, 1992
Copolymers prepared from polymers of ethylenically polymerizable cyclic ortho esters
GEN ELECTRIC16 citations72
USRE34799ENov 22, 1994
Reactive graft polymers
GEN ELECTRIC5 citations63
US4980415ADec 25, 1990
Compositions comprising polyphenylene ethers and reactive graft polymers
GEN ELECTRIC2 citations63
US5380796AJan 10, 1995
Functionalized olefin polymers and polyphenylene ether compositions containing them
GEN ELECTRIC2 citations62
US4973628ANov 27, 1990
Method for preparing block polyphenylene ether-polycarbonates
GEN ELECTRIC5 citations62
US4902753AFeb 20, 1990
Polyphenylene ether-polyester molding compositions useful under severe molding conditions
GEN ELECTRIC5 citations62
US4775591AOct 4, 1988
Ionomer compositions and method for their preparation
GEN ELECTRIC5 citations62
US4374959AFeb 22, 1983
Block copolymers of polyphenylene oxides and non-sterically-hindered high molecular weight aromatic polycarbonates
GEN ELECTRIC5 citations62
US4105857AAug 8, 1978
Process for preparing phenyl trichloro-ethanes
GEN ELECTRIC3 citations62
US5322893AJun 21, 1994
Thermoplastic elastomers and method for making
GEN ELECTRIC4 citations61
US5010143AApr 23, 1991
Method for preparing block polyphenylene ether-polycarbonates
GEN ELECTRIC3 citations60
US4156099AMay 22, 1979
Process for preparing dihydroxydiphenyl chloroethylenes
GEN ELECTRIC1 citations52
US4139721AFeb 13, 1979
Process for preparing diphenyl haloethylenes
GEN ELECTRIC1 citations52
US4128731ADec 5, 1978
Preparation of 1,1,1-trichloro-2,2-bis(4-hydroxyphenyl)ethane
GEN ELECTRIC1 citations51