Inventor
KRESPAN CARL G
59 patents
Patents
50 patentsUS5182342AJan 26, 1993
Hydrofluorocarbon solvents for fluoromonomer polymerization
DU PONT210 citations98
US5162594ANov 10, 1992
Process for production of polyfluoroolefins
DU PONT118 citations98
US5481028AJan 2, 1996
Lewis acid catalyzed conjugated iodofluorination of fluoroolefins
DU PONT88 citations96
US5459212AOct 17, 1995
Carbon based initiators for polymerization and telomerization of vinyl monomers
DU PONT45 citations96
US5382704AJan 17, 1995
Fluorinated methyl ethers
DU PONT64 citations96
US5268122ADec 7, 1993
Gem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositions
DU PONT64 citations96
US5157171AOct 20, 1992
Process for chlorofluoropropanes
DU PONT52 citations96
US5064559ANov 12, 1991
Binary azeotropic compositions of (CF3 CHFCHFCF2 CF3) with methanol or ethanol or isopropanol
DU PONT68 citations96
US4349650ASep 14, 1982
Polyfluoroallyloxy compounds, their preparation and copolymers therefrom
DU PONT117 citations96
US4335255AJun 15, 1982
Alkyl perfluoro (2-methyl-5-oxo-3-oxahexanoate)
DU PONT91 citations96
US4275225AJun 23, 1981
Polyfluoroallyloxy compounds, their preparation and copolymers therefrom
DU PONT128 citations96
US4273729AJun 16, 1981
Polyfluoroallyloxy compounds, their preparation and copolymers therefrom
DU PONT54 citations96
US4273728AJun 16, 1981
Polyfluoroallyloxy compounds, their preparation and copolymers therefrom
DU PONT36 citations93
US7179413B1Feb 20, 2007
Flash-spinning process and solution
DU PONT27 citations92
US5416246AMay 16, 1995
Chlorofluorocarbon isomerization
DU PONT27 citations92
US5286822AFeb 15, 1994
Perfluoroalkyl sulfide polymer solvents for fluoromonomer polymerization
DU PONT39 citations92
US6194619B1Feb 27, 2001
Gem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositions
DU PONT22 citations91
US5112993AMay 12, 1992
Process for the preparation of difluoromaleic anhydride
DU PONT18 citations82
US4292449ASep 29, 1981
Polyfluoroallyloxy compounds, their preparation and copolymers therefrom
DU PONT22 citations82
US4235804ANov 25, 1980
Preparation of perfluoroallyl fluorosulfate
DU PONT20 citations82
US4384128AMay 17, 1983
Perfluoroglycidyl ethers
DU PONT21 citations78
US5574193ANov 12, 1996
Initiators for telomerization of polyfluoroalkyl iodides with fluoroolefins
DU PONT7 citations74
US5565081AOct 15, 1996
Processes for the preparation of 2,2,3,3-tetrafluoropropionate salts and derivatives thereof
DU PONT7 citations74
US5336801AAug 9, 1994
Processes for the preparation of 2,2,3,3-tetrafluoropropionate salts and derivatives thereof
DU PONT6 citations74
US5220082AJun 15, 1993
Process for production of polyfluoroolefins
DU PONT7 citations74
US5026801AJun 25, 1991
Polyhalodihydrodioxins and polyhalodioxoles
DU PONT5 citations74
US5023362AJun 11, 1991
Alkyl perfluoro(2-methyl-5-oxo-3-oxahexanoate)
DU PONT15 citations74
US4973714ANov 27, 1990
Halogenated 1,3-dioxolanes and derivatives
DU PONT10 citations74
US4935558AJun 19, 1990
Reductive dechlorination of 1,1,1,2-tetrafluoro-2-chloroethane
DU PONT7 citations74
US4810806AMar 7, 1989
Halogenated 1,3-dioxolanes and derivatives
DU PONT13 citations74
US4576752AMar 18, 1986
β-Substituted polyfluoroethyl compounds
DU PONT15 citations74
US4474700AOct 2, 1984
β-Substituted polyfluoropropionate salts and derivatives
DU PONT13 citations74
US4214070AJul 22, 1980
Polymers of 2-ketopentafluoropropanesulfonic acid and related acids with ethylene or fluorinated unsaturated monomers
DU PONT8 citations74
US4126631ANov 21, 1978
β-Carbonylpolyfluoroalkyl sulfonate esters
DU PONT15 citations74
US4243504AJan 6, 1981
Fluorovinyl ether polymers
DU PONT9 citations73
US4360645ANov 23, 1982
Perfluoroglycidyl ethers
DU PONT18 citations70
US5449837ASep 12, 1995
Fluorinated methyl ethers
DU PONT2 citations63
US5286398AFeb 15, 1994
End-capped polyalkylene oxide compositions with hydroxyl group functionality and use thereof for lubrication in refrigeration systems
DU PONT6 citations63
US5227500AJul 13, 1993
Halogenated 1,3-dioxolanes and derivatives
DU PONT2 citations63
US5057586AOct 15, 1991
Halogenated 1,3-dioxolanes and derivatives
DU PONT3 citations63
US4922038AMay 1, 1990
Preparation of 1,1,1,2-tetrafluorodichloroethane
DU PONT3 citations63
US4786442ANov 22, 1988
Alkyl perfluoro(2-methyl-5-oxo-3-oxahexanoate)
DU PONT2 citations63
US4766248AAug 23, 1988
β-substituted polyfluoroethyl compounds
DU PONT4 citations63
US4686300AAug 11, 1987
Polyfluoro gamma-ketoesters and 5-hydroxy gamma lactone analogues thereof
DU PONT2 citations63
US4594458AJun 10, 1986
Vinyl ether monomers derived from alkyl perfluoro-ω-(2-iodoethoxy) compounds
DU PONT3 citations63
US4304927ADec 8, 1981
Carboxylic acids, esters and salts of polyfluoroacetone
DU PONT5 citations63
US4160780AJul 10, 1979
2-Ketopentafluoropropanesulfonic acid and related acids
DU PONT4 citations63
US5070213ADec 3, 1991
Perfluoro-4,4'-bis(2,2-dimethyl-1,3-dioxolane) and its preparation and use
DU PONT5 citations62
US4363898ADec 14, 1982
Perfluorodiglycidyl ethers
DU PONT6 citations59
US4316986AFeb 23, 1982
Preparation of difluoromalonyl fluoride
DU PONT5 citations57
Showing the top 50 of 59 patents by PatentIndex Score.