Inventor
KUMAI SEISAKU
JP41 patents
⚠️ This page may combine multiple inventors who share the name “KUMAI SEISAKU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ASAHI GLASS CO LTD
38 patentsUS6197989B1Mar 6, 2001
Fluorinated organosilicon compounds and process for the preparation thereof
ASAHI GLASS CO LTD73 citations93
US5710317AJan 20, 1998
Preparation of difluoroacetic acid fluoride and difluoroacetic acid esters
ASAHI GLASS CO LTD24 citations92
US5646222AJul 8, 1997
Polyfluorohydrocarbon group-containing monomers, their polymers and applications of the polymers
ASAHI GLASS CO LTD26 citations91
US5565607AOct 15, 1996
Polyfluorohydrocarbon group-containing monomers, their polymers and application of the polymers
ASAHI GLASS CO LTD19 citations91
US5568239AOct 22, 1996
Stainproofing oil for a heat fixing roller
ASAHI GLASS CO LTD46 citations89
US4340750AJul 20, 1982
Process for producing fluorovinyl ether
ASAHI GLASS CO LTD24 citations82
US4275226AJun 23, 1981
Process for producing fluorovinyl ether
ASAHI GLASS CO LTD25 citations82
US5663399ASep 2, 1997
Method for producing fluorine-containing silicone compound
ASAHI GLASS CO LTD13 citations81
US5648568AJul 15, 1997
Method for producing a hydrofluorocarbon
ASAHI GLASS CO LTD12 citations74
US5072062ADec 10, 1991
Bromination method
ASAHI GLASS CO LTD6 citations74
US4151200AApr 24, 1979
Process for producing polyfluorodiacyl fluoride
ASAHI GLASS CO LTD7 citations74
US3998877ADec 21, 1976
Process for preparing methacrylic acid
ASAHI GLASS CO LTD8 citations74
US5929292AJul 27, 1999
Distillation column type production method
ASAHI GLASS CO LTD14 citations73
US5834614ANov 10, 1998
Method for producing a fluorine-containing silicone compound
ASAHI GLASS CO LTD11 citations73
US5648504AJul 15, 1997
Process for producing tetrafluorophthalic anhydride
ASAHI GLASS CO LTD5 citations73
US5523476AJun 4, 1996
Processes for producing tetrafluorophthalic anhydride and fluorobenzoic acids
ASAHI GLASS CO LTD5 citations73
US5068449ANov 26, 1991
Fluorinated benzoyl compounds
ASAHI GLASS CO LTD9 citations73
US5728903AMar 17, 1998
Method for producing flourine-containing silicone compound
ASAHI GLASS CO LTD6 citations72
US4985588AJan 15, 1991
Nucleus-fluorinated aromatic carboxylates and processes for their production
ASAHI GLASS CO LTD11 citations72
US5834612ANov 10, 1998
Fluorine-containing organic compound
ASAHI GLASS CO LTD12 citations71
US5332851AJul 26, 1994
Processes for producing 5-fluorobenzoic acids and their intermediates
ASAHI GLASS CO LTD5 citations71
US5241111AAug 31, 1993
Processes for producing 5-fluorobenzoic acids and their intermediates
ASAHI GLASS CO LTD7 citations71
US5041647AAug 20, 1991
Process for producing trifluoroacetic acid and trifluoroacetyl chloride
ASAHI GLASS CO LTD8 citations71
US5763709AJun 9, 1998
Method for producing a hydrofluorocarbon
ASAHI GLASS CO LTD2 citations63
US5618986AApr 8, 1997
Method for producing a hydrofluorocarbon
ASAHI GLASS CO LTD2 citations63
US5557017ASep 17, 1996
Method for producing a hydrofluorocarbon
ASAHI GLASS CO LTD3 citations63
US4440948AApr 3, 1984
Process for preparing methacrylic acid
ASAHI GLASS CO LTD3 citations63
US4379768AApr 12, 1983
Process for producing perfluorosuccinyl fluoride
ASAHI GLASS CO LTD5 citations63
US5349098ASep 20, 1994
Process for producing chlorofluorobenzenes
ASAHI GLASS CO LTD3 citations62
US4318867AMar 9, 1982
Process for producing difluoroiodoacetyl fluoride
ASAHI GLASS CO LTD2 citations62
US5914422AJun 22, 1999
Method for producing fluorine-containing silicone compound
ASAHI GLASS CO LTD4 citations61
US5093515AMar 3, 1992
Fluorinated benzoyl compounds
ASAHI GLASS CO LTD2 citations61
US5621147AApr 15, 1997
Trifluoro-2-(trans-4-substituted cyclohexyl) ethylenes and process for their production
ASAHI GLASS CO LTD5 citations57
US6515102B2Feb 4, 2003
Process for recovering fluoropolymers
ASAHI GLASS CO LTD3 citations54
US5208394AMay 4, 1993
Process for producing chlorofluorobenzenes
ASAHI GLASS CO LTD0 citations52
US4089869AMay 16, 1978
Process for producing perfluorolactone
ASAHI GLASS CO LTD1 citations52
US4994610AFeb 19, 1991
Process for preparing fluorinated benzoyl compounds
ASAHI GLASS CO LTD0 citations51
US7015263B2Mar 21, 2006
Process for recovering fluoropolymers
ASAHI GLASS CO LTD0 citations46