Inventor

RAO V N MALLIKARJUNA

US89 patents

Patents

50 patents

US6369284B1Apr 9, 2002

Process for the production of hexafluoropropylene from CC1F2CC1FCF3 and azeotropes of CC1F2CC1FCF3 with HF

DU PONT42 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

US5171902ADec 15, 1992

Saturated linear polyfluorohydrocarbons, processes for their production, and their use in cleaning compositions

DU PONT36 citations96

US4843181AJun 27, 1989

Process for the manufacture of 1,1,1-trifluorodichloroethane and 1,1,1,2-tetrafluorochloroethane

DU PONT54 citations96

US4766260AAug 23, 1988

Gas-phase fluorination process

DU PONT78 citations96

US6329559B1Dec 11, 2001

Processes for the production of hexafluoropropene and optionally other halogenated hydrocarbons containing fluorine

DU PONT79 citations94

US6376727B1Apr 23, 2002

Processes for the manufacture of 1,1,1,3,3-pentafluoropropene, 2-chloro-pentafluoropropene and compositions comprising saturated derivatives thereof

DU PONT30 citations93

US6291729B1Sep 18, 2001

Halofluorocarbon hydrogenolysis

DU PONT28 citations93

US6281395B1Aug 28, 2001

1,1,1,2,3,3,3-heptafluoropropane manufacturing process

DU PONT30 citations93

US6093859AJul 25, 2000

Process for the manufacture of 1,1,1,3,3-pentafluoropropane

DU PONT24 citations93

US5945573AAug 31, 1999

Process for the manufacture of 1,1,1,3,3-pentafluoropropane

DU PONT30 citations93

US5629462AMay 13, 1997

Hydrodehalogenation catalysts and their preparation and use

DU PONT18 citations93

US5559069ASep 24, 1996

Catalysts for halogenated hydrocarbon processing, their precursors and their preparation and use

DU PONT26 citations93

US5545774AAug 13, 1996

Process for the manufacture of 1,1,1,3,3,3-hexafluoropropane

DU PONT25 citations93

US5447896ASep 5, 1995

Hydrodehalogenation catalysts and their preparation and use

DU PONT20 citations93

US5446216AAug 29, 1995

Process for manufacture of high purity 1,1-dichlorotetrafluoroethane

DU PONT28 citations93

US6548720B2Apr 15, 2003

Process for the manufacture of 1,1,1,3,3-pentafluoropropene, 2-chloro-pentafluoropropene and compositions comprising saturated derivatives thereof

DU PONT20 citations92

US6211135B1Apr 3, 2001

Processes for the purification and use of 2,2-dichloro-1,1,1,3,3,3-hexafluoropropane and azeotropes thereof with HF

DU PONT25 citations92

US6018083AJan 25, 2000

Process for the production of fluorocarbons

DU PONT23 citations92

US5892135AApr 6, 1999

Process for the production of trifluoroethylene

DU PONT19 citations92

US5523501AJun 4, 1996

Catalytic hydrogenolysis

DU PONT36 citations92

US5302765AApr 12, 1994

Catalytic process for producing CF3 CHClF

DU PONT28 citations92

US5177273AJan 5, 1993

Process for the manufacture of halogen-substituted propanes containing hydrogen and at least five fluorine substituents

DU PONT36 citations92

US5146018ASep 8, 1992

Hydrogenolysis/dehydrohalogenation process

DU PONT24 citations92

US5068473ANov 26, 1991

Hydrogenolysis/dehydrohalogenation process

DU PONT36 citations92

US5001287AMar 19, 1991

Purification of saturated halocarbons

DU PONT37 citations92

US4873381AOct 10, 1989

Hydrodehalogenation of CF3 CHClF in the presence of supported Pd

DU PONT27 citations92

US6194619B1Feb 27, 2001

Gem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositions

DU PONT22 citations91

US5094773AMar 10, 1992

Azeotropes of HF and process for the separation of HF via azeotropic distillation

DU PONT27 citations90

US4944846AJul 31, 1990

Process for the separation of HF via Azeotropic distillation

DU PONT35 citations90

US4911792AMar 27, 1990

Process for the separation of HF via phase separation and distillation

DU PONT32 citations90

US5773637AJun 30, 1998

Perfluoroalkyl sulfonates, their preparation and use

DU PONT29 citations89

US5563304AOct 8, 1996

Production of 1,2-dihydro and 2,2-dihydro hexafluoropropanes and azeotropes thereof with HF

DU PONT20 citations89

US6165931ADec 26, 2000

Catalytic hydrofluorination processes and catalysts

DU PONT18 citations84

US5504265AApr 2, 1996

Saturated linear polyfluorohydrocarbons, processes for their production, and their use in cleaning compositions

DU PONT17 citations82

US5446219AAug 29, 1995

Hydrogenolysis of halocarbon mixtures

DU PONT17 citations82

US5430204AJul 4, 1995

Halocarbon hydrogenolysis

DU PONT18 citations82

US4766259AAug 23, 1988

Gas-phase fluorination process

DU PONT20 citations82

US6677493B1Jan 13, 2004

Processes for the purification and use of 2-chloro-1,1,1,2,3,3,3-heptafluoropropane and zeotropes thereof with HF

DU PONT10 citations74

US6274780B1Aug 14, 2001

Catalysts for halogenated hydrocarbon processing and their preparation and use

DU PONT7 citations74

US6107267AAug 22, 2000

Compositions comprising CF3 CF2 CHF2 and their manufacture

DU PONT11 citations74

US6028026AFeb 22, 2000

Cubic chromium trifluoride and its use for halogenated hydrocarbon processing

DU PONT11 citations74

US5948213ASep 7, 1999

Processes for the manufacture and purification of 1,1,2,2,3,3,4,4-octafluorobutane and by-products, and azeotropes with HF

DU PONT7 citations74

US5880315AMar 9, 1999

Catalytic manufacture of vinyl fluoride

DU PONT9 citations74

US5817893AOct 6, 1998

Processes for the manufacture and purification of 1,1,2,2,3,3,4,4-octafluorobutane and by-products

DU PONT6 citations74

US5545770AAug 13, 1996

Process for manufacture of high purity 1, 1-dichlorotetrafluoroethane

DU PONT10 citations74

Showing the top 50 of 89 patents by PatentIndex Score.

RAO V N MALLIKARJUNA

Patents

Catalytic manufacture of pentafluoropropenes

Process for the manufacture of 1,1,1,2,3,-pentafluoropropane

Isomerization of saturated fluorohydrocarbons

Process for the production of hexafluoropropylene from CC1F2CC1FCF3 and azeotropes of CC1F2CC1FCF3 with HF

Fluorinated methyl ethers

Gem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositions

Saturated linear polyfluorohydrocarbons, processes for their production, and their use in cleaning compositions

Process for the manufacture of 1,1,1-trifluorodichloroethane and 1,1,1,2-tetrafluorochloroethane

Gas-phase fluorination process

Processes for the production of hexafluoropropene and optionally other halogenated hydrocarbons containing fluorine

Processes for the manufacture of 1,1,1,3,3-pentafluoropropene, 2-chloro-pentafluoropropene and compositions comprising saturated derivatives thereof

Halofluorocarbon hydrogenolysis

1,1,1,2,3,3,3-heptafluoropropane manufacturing process

Process for the manufacture of 1,1,1,3,3-pentafluoropropane

Process for the manufacture of 1,1,1,3,3-pentafluoropropane

Hydrodehalogenation catalysts and their preparation and use

Catalysts for halogenated hydrocarbon processing, their precursors and their preparation and use

Process for the manufacture of 1,1,1,3,3,3-hexafluoropropane

Hydrodehalogenation catalysts and their preparation and use

Process for manufacture of high purity 1,1-dichlorotetrafluoroethane

Process for the manufacture of 1,1,1,3,3-pentafluoropropene, 2-chloro-pentafluoropropene and compositions comprising saturated derivatives thereof

Processes for the purification and use of 2,2-dichloro-1,1,1,3,3,3-hexafluoropropane and azeotropes thereof with HF

Process for the production of fluorocarbons

Process for the production of trifluoroethylene

Catalytic hydrogenolysis

Catalytic process for producing CF3 CHClF

Process for the manufacture of halogen-substituted propanes containing hydrogen and at least five fluorine substituents

Hydrogenolysis/dehydrohalogenation process

Hydrogenolysis/dehydrohalogenation process

Purification of saturated halocarbons

Hydrodehalogenation of CF3 CHClF in the presence of supported Pd

Gem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositions

Azeotropes of HF and process for the separation of HF via azeotropic distillation

Process for the separation of HF via Azeotropic distillation

Process for the separation of HF via phase separation and distillation

Perfluoroalkyl sulfonates, their preparation and use

Production of 1,2-dihydro and 2,2-dihydro hexafluoropropanes and azeotropes thereof with HF

Catalytic hydrofluorination processes and catalysts

Saturated linear polyfluorohydrocarbons, processes for their production, and their use in cleaning compositions

Hydrogenolysis of halocarbon mixtures

Halocarbon hydrogenolysis

Gas-phase fluorination process

Processes for the purification and use of 2-chloro-1,1,1,2,3,3,3-heptafluoropropane and zeotropes thereof with HF

Catalysts for halogenated hydrocarbon processing and their preparation and use

Compositions comprising CF3 CF2 CHF2 and their manufacture

Cubic chromium trifluoride and its use for halogenated hydrocarbon processing

Processes for the manufacture and purification of 1,1,2,2,3,3,4,4-octafluorobutane and by-products, and azeotropes with HF

Catalytic manufacture of vinyl fluoride

Processes for the manufacture and purification of 1,1,2,2,3,3,4,4-octafluorobutane and by-products

Process for manufacture of high purity 1, 1-dichlorotetrafluoroethane