Inventor
Velliyur Nott Mallikarjuna Rao
Inventor
Wilmington, DE, US
Overview
Patents· 188 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds41%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry14%
C09KMaterials for miscellaneous applications, not provided for elsewhere8%
Y02PClimate change mitigation technologies in the production or processing of goods6%
A62DChemical means for extinguishing fires or for combating or protecting against harmful chemical agents4%
C08JWorking-up4%
F25BRefrigeration machines, plants or systems4%
B60HArrangements of heating, cooling, ventilating or other air-treating devices specially adapted for passenger or goods spaces of vehicles3%
C10MLubricating compositions3%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions3%
PatentTitleYear
10,683,443Compositions comprising a fluoroolefin202010,533,120Compositions comprising a fluoroolefin202010,513,645Compositions comprising a fluoroolefin201910,392,5451,2,3,3,3-pentafluoropropene production processes201910,316,232Compositions comprising a fluoroolefin20199,879,165'Compositions comprising a fluoroolefin'20189,670,393'Compositions comprising a fluoroolefin'20178,884,084'Process for the manufacture of halocarbons and selected compounds and azeotropes with HF'20148,815,114'Phenol stabilizers for fluoroolefins'20148,696,926'Processes for the production of fluoropropanes and halopropenes and azeotropic compositions of 2-chloro-3,3,3-trifluoro-1-propene with HF and of 1,1,1,2,2-pentafluoropropane with HF'20148,663,494'Terpene, terpenoid, and fullerene stabilizers for fluoroolefins'20148,535,556'Compositions comprising iodotrifluoromethane and stabilizers'20138,524,110'Compositions comprising a fluoroolefin'20138,496,846'Phenol stabilizers for fluoroolefins'20138,450,537'Processes for the production of fluoropropanes and halopropenes'20138,398,882'Processes for the production of fluoropropanes and halopropenes and azeotropic compositions of 2-chloro-3,3,3-trifluoro-1-propene with HF and of 1,1,1,2,2-pentafluoropropane with HF'20138,399,723'Processes for production and purification of hydrofluoroolefins'20138,377,327'Tetrafluoropropene production processes'20138,354,039'Process for the manufacture fluorocarbons'20138,318,992'Processes for the production of fluoropropanes and halopropenes'20128,314,273'Production processes for making 1,1,1,2,2,3-hexafluoropropane'20128,288,597'Dehydrofluorination process to manufacture hydrofluoroolefins'20128,263,816'1,2,3,3,3-Pentafluoropropene production processes'20128,247,625'Catalytic addition of hydrofluorocarbons to fluoroolefins'20128,212,092'Process for the reduction of acidic contaminates in fluorinated hydrocarbons'20128,163,964'Processes for producing pentafluoropropenes and certain azeotropes comprising HF and certain halopropenes of the formula C3 HClF4 '20128,148,586'Catalytic production processes for making tetrafluoropropenes and pentafluoropropenes'20128,133,406'Processes for producing 2,3,3,3-tetrafluoropropene and/or 1,2,3,3-tetrafluoropropene'20128,101,094'Terpene, terpenoid, and fullerene stabilizers for fluoroolefins'20128,075,796'Phenol stabilizers for fluoroolefins'20118,058,489'Processes for producing pentafluoropropenes and azeotropes comprising HF and certain halopropenes of the formula C3Cl2F4, C3ClF5, or C3HF5'20118,053,611'Process or the preparation of 1,1,1,3,3,3-hexafluoro-propane and at least one of 1,1,1,2,3,3-hexafluoropropane, hexafluoropropane and 1,1,1,2,3,3,3-heptafluoropropane'20118,044,252'Catalytic isomerization between E and Z isomers of 1,2,3,3,3-pentafluoropropene'20118,017,817'Process for the preparation of 1,1,3,3,3-pentafluoropropene and 1,2,3,3,3-pentafluoropropene'20118,007,677'Azeotrope compositions comprising 1,1,1,2,3-pentafluoropropene and hydrogen fluoride and uses thereof'20117,981,311'Process and methods of purification for the manufacture fluorocarbons'20117,982,073'Catalytic production processes for making tetrafluoropropenes and pentafluoropropenes'20117,959,825'Compositions comprising HFC-1234yf and HFC-125'20117,943,015'Use of copolymers of perfluoro(alkyl vinyl ether) for photochemical reactions'20117,914,698'Compositions comprising a fluoroolefin'20117,906,693'Processes for producing 2,3,3,3-tetrafluoropropene, a process for producing 1-chloro-2,3,3,3-pentafluoropropane and azeotropic compositions of 1-chloro-2,3,3,3-tetrafluoropropene with HF'20117,906,037'Compositions comprising a fluoroolefin'20117,897,823'Process for production of azeotrope compositions comprising hydrofluoroolefin and hydrogen fluoride and uses of said azeotrope compositions in separation processes'20117,888,539'Azeotrope compositions of octafluorocyclobutane and uses thereof'20117,879,253'Compositions comprising a fluoroolefin'20117,872,161'Process for producing 2,3,3,3-tetrafluoropropene'20117,862,742'Compositions comprising a fluoroolefin'20117,862,741'Compositions comprising a fluoroolefin'20117,862,740'Compositions comprising a fluoroolefin'20117,833,434'Tetrafluoropropene production processes'20107,722,781'Tetrafluoropropene production processes'20107,708,903'Compositions comprising fluoroolefins and uses thereof'20107,709,438'Azeotrope compositions comprising nonafluoropentene and hydrogen fluoride and uses thereof'20107,678,949'Process for the preparation of 1,3,3,3-tetrafluoropropene and/or 2,3,3,3-tetrafluoropropene'20107,663,007'Process for the preparation of 1,3,3,3-tetrafluoropropene and/or 1,1,3,3,3-pentafluoropropene'20107,659,435'Process for the preparation of 1,1,1,3,3-pentafluoropropane and 1,1,1,2,3-pentafluoropropane'20107,659,436'Process for the preparation of 1,1,1,3,3-penta-fluoropropane and/or 1,1,1,3,3,3-hexafluoropropane'20107,524,999'Process for the production of 1,1,1,3,3,3-hexafluoropropane'20097,504,358'Nickel-substituted and mixed nickel-and cobalt-substituted chromium oxide compositions, their preparation, and their use as catalysts and catalysts precursors'20097,476,771'Azeotrope compositions comprising 2,3,3,3-tetrafluoropropene and hydrogen fluoride and uses thereof'20097,449,126'Heat transfer and refrigerant compositions comprising 3,3,4,4,5,5,6,6,6-nonafluoro-1-hexene and a hydrocarbon'20087,435,700'Chromium oxide compositions containing zinc, their preparation and their use as catalysts and catalyst precursors'20087,423,188'Azeotrope compositions comprising E-1,3,3,3-tetrafluoropropene and hydrogen fluoride and uses thereof'20087,413,676'Heat transfer and refrigerant compositions comprising 3,3,4,4,5,5,6,6,6-nonafluoro-1-hexene and a fluoroether'20087,405,334'Process for the reduction of acidic contaminates in fluorinated hydrocarbons'20087,388,117'Azeotrope compositions comprising 1,2,3,3,3-pentafluoropropene and hydrogen fluoride and uses thereof'20087,385,094'Azeotrope compositions comprising tridecafluoro-3-heptene and hydrogen fluoride and uses thereof'20087,343,981'Methods using fluoroketones for: extinguishing fire; preventing fire, and reducing or eliminating the flammability of a flammable working fluid'20087,285,692'Process for the preparation of 1,1,1,3,3-pentafluoropropane and 1,1,1,2,3-pentafluoropropane'20077,285,691'Process for the preparation of 1,1,1,3,3,3-hexafluoropropane and at least one of 1,1,1,2,3,3-hexafluoropropane and 1,1,1,2,3,3,3-heptafluoropropane'20077,285,690'Process for the preparation of 1,1,1,3,3-pentafluoropropane and 1,1,1,3,3,3-hexafluoropropane'20077,271,301'Synthesis of perfluoroolefins'20077,264,745'Heat transfer and refrigerant compositions comprising 3,3,4,4,5,5,6,6,6-nonafluoro-1-hexene and a hydrofluorocarbon'20077,217,678'Cobalt-substituted chromium oxide compositions, their preparation, and their use as catalysts and catalyst precursors'20077,161,049'Process for purifying hydrofluoropropanes'20077,129,383'Processes for the preparation of 2-chloro-1,1,1,2,3,3,3-heptafluoropropane, hexafluoropropene and 1,1,1,2,3,3,3-heptafluoropropane'20067,122,704'Fluoroketone compounds'20067,087,788'Fluorosulfone compounds'20067,074,973'Process for the preparation of 1,1,1,2,2-pentafluoroethane'20066,958,422'Pyrolysis process'20056,858,762'Process for the manufacture of halocarbons and selected compounds and azeotropes with HF'20056,806,396'Disposal of fluoroform (HFC-23)'20046,762,333'Process for reducing the fluorine content of hydrofluorocarbons and hydrohalofluorocarbons'20046,755,942'Process for the manufacture of halocarbons and selected compounds and azeotropes with HF'20046,683,226'Process for the production of hexafluoropropylene from CClF2CClFCF3 and azeotropes of CClF2CClFCF3 with HF'20046,635,187'Compositions comprising hydrofluorocarbons and their manufacture'20036,548,720'Process for the manufacture of 1,1,1,3,3-pentafluoropropene, 2-chloro-pentafluoropropene and compositions comprising saturated derivatives thereof'20036,540,933'Process for the production of hexafluoropropylene from CC1F2CC1FCF3 and azeotropes of CC1F2CC1FCF3 with HF'20036,472,574'Production of 1,2-dihydro and 2,2-dihydro hexafluoropropanes and azeotropes thereof with HF'20026,388,147'Production of 1,2-dihydro and 2,2-dihydro hexafluoropropanes and azeotropes thereof with HF'20026,376,727'Processes for the manufacture of 1,1,1,3,3-pentafluoropropene, 2-chloro-pentafluoropropene and compositions comprising saturated derivatives thereof'20026,359,183'Treatment of chromium oxide and catalytic manufacture of vinyl fluoride'20026,291,729'Halofluorocarbon hydrogenolysis'20016,291,730'Process for the manufacture of halocarbons and selected compounds and azeotropes with HF'20016,281,395'1,1,1,2,3,3,3-heptafluoropropane manufacturing process'20016,281,396'Fluorocarbon purification process'20016,274,780'Catalysts for halogenated hydrocarbon processing and their preparation and use'20016,224,781'Compositions comprising hydrofluorocarbons and their manufacture'20016,218,587'Catalytic hydrogenolysis'20016,194,619'Gem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositions'20016,165,931'Catalytic hydrofluorination processes and catalysts'20006,147,267'Process for perfluorocycloalkane purification'20006,143,938'Process for perhalocycloalkane purification'20006,127,585'Catalysts for halogenated hydrocarbon processing, their precursors and their preparation and use'20006,093,859'Process for the manufacture of 1,1,1,3,3-pentafluoropropane'20006,040,486'Process for the manufacture of 2-chloro-1,1,1-trifluoroethane'20006,034,289'Treatment of chromium oxide and catalytic manufacture of vinyl fluoride'20006,028,026'Cubic chromium trifluoride and its use for halogenated hydrocarbon processing'20006,018,083'Process for the production of fluorocarbons'20005,945,573'Process for the manufacture of 1,1,1,3,3-pentafluoropropane'19995,919,994'Catalytic halogenated hydrocarbon processing and ruthenium catalysts for use therein'19995,902,911'Production of 2-chloro-2-hydrohexafluoropropane and azeotropes thereof with HF'19995,866,730'Process for enriching 1,2-dichloro-1,1,2,2-tetrafluoroethane from a mixture of dichlorotetrafluoroethane isomers'19995,847,242'Catalysts for halogenated hydrocarbon processing, their precursors and their preparation and use'19985,831,136'Process for manufacture of high purity 1,1-dichlorotetrafluoroethane'19985,824,828'Process for manufacture of trichlorotrifluoroethanes'19985,817,893'Processes for the manufacture and purification of 1,1,2,2,3,3,4,4-octafluorobutane and by-products'19985,773,637'Perfluoroalkyl sulfonates, their preparation and use'19985,763,698'Process for reducing the fluorine content of hydrofluorocarbons and hydrohalofluorocarbons'19985,683,978'Saturated linear polyfluorohydrocarbons in cleaning compositions'19975,629,462'Hydrodehalogenation catalysts and their preparation and use'19975,602,288'Catalytic process for producing CF.sub.3 CH.sub.2 F'19975,569,797'Method of removing olefinic impurities from hydrochlorofluorocarbons'19965,563,304'Production of 1,2-dihydro and 2,2-dihydro hexafluoropropanes and azeotropes thereof with HF'19965,559,069'Catalysts for halogenated hydrocarbon processing, their precursors and their preparation and use'19965,545,774'Process for the manufacture of 1,1,1,3,3,3-hexafluoropropane'19965,523,498'Process for reducing the fluorine content of hydrofluorocarbons and hydrohalofluorocarbons'19965,523,501'Catalytic hydrogenolysis'19965,504,265'Saturated linear polyfluorohydrocarbons, processes for their production, and their use in cleaning compositions'19965,481,051'2,2-dichlorohexafluoropropane hydrogenolysis'19965,475,167'Process for the manufacture of pentafluoroethane'19955,463,152'Halofluorocarbon hydrogenolysis'19955,461,177'Fluorocarbon purification process'19955,449,837'Fluorinated methyl ethers'19955,447,896'Hydrodehalogenation catalysts and their preparation and use'19955,446,219'Hydrogenolysis of halocarbon mixtures'19955,446,216'Process for manufacture of high purity 1,1-dichlorotetrafluoroethane'19955,430,204'Halocarbon hydrogenolysis'19955,409,625'Azeotropic mixture of linear hydrofluorocarbon and HF'19955,406,009'Catalytic equilibration to improve the relative yield of selected halocarbons'19955,396,000'Process for the manufacture of 1,1,1,2,3,-pentafluoropropane'19955,395,999'Catalytic chlorofluorination process for producing CHClFCF.sub.3 and CHF.sub.2 CF.sub.3'19955,382,704'Fluorinated methyl ethers'19955,364,992'Halocarbon hydrogenolysis'19945,345,017'Process for reducing the fluorine content of halocarbons'19945,321,170'Process for the manufacture of 1,1,1,2-tetrafluoroethane'19945,302,765'Catalytic process for producing CF.sub.3 CHClF'19945,300,711'Process for the manufacture of 2,2-dichloro-1,1,1-trifluoroethane, 2-chloro-1,1,1,2-tetrafluoroethane and pentafluoroethane'19945,300,713'Hydrogenolysis of halocarbon mixtures'19945,300,710'Process for the manufacture of 2-chloro-1,1,1,2-tetrafluoroethane and pentafluoroethane'19945,268,122'Gem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositions'19935,258,561'Catalytic chlorofluorination process for producing CF.sub.3 CHClF and CF.sub.3 CHF.sub.2'19935,208,397'Hydrogenolysis of halocarbon mixtures'19935,196,615'Catalyzed hydrofluorination halogenated alkanes'19935,177,273'Process for the manufacture of halogen-substituted propanes containing hydrogen and at least five fluorine substituents'19935,171,902'Saturated linear polyfluorohydrocarbons, processes for their production, and their use in cleaning compositions'19925,146,018'Hydrogenolysis/dehydrohalogenation process'19925,136,113'Catalytic hydrogenolysis'19925,120,883'Catalytic process for producing CCl.sub.3 CF.sub.3'19925,094,988'Activation of noble metal catalysts using fluorohalocarbons or fluorohalohydrocarbons'19925,094,773'Azeotropes of HF and process for the separation of HF via azeotropic distillation'19925,068,473'Hydrogenolysis/dehydrohalogenation process'19915,030,372'Catalytic equilibration to improve the relative yield of selected halocarbons'19915,026,930'Gas-phase fluorination process'19915,015,791'Catalyzed hydrofluorination of alkenes'19915,008,475'Gas-phase fluorination process'19915,008,476'Process for the preparation of 1,1,1,2-tetrafluoroethane'19915,001,287'Purification of saturated halocarbons'19914,980,324'Regeneration or activation of noble metal catalysts using fluorohalocarbons or fluorohalohydrocarbons'19904,944,846'Process for the separation of HF via Azeotropic distillation'19904,911,792'Process for the separation of HF via phase separation and distillation'19904,902,838'Isomerization of saturated fluorohydrocarbons'19904,873,381'Hydrodehalogenation of CF.sub.3 CHClF in the presence of supported Pd'19894,843,181'Process for the manufacture of 1,1,1-trifluorodichloroethane and 1,1,1,2-tetrafluorochloroethane'19894,782,167'Process for preparing butyrolactones and butanediols'19884,772,729'Hydrogenation of citric acid and substituted citric acids to 3-substituted tetrahydrofuran, 3- and 4-substituted butyrolactones and mixtures thereof'19884,766,259'Gas-phase fluorination process'19884,766,260'Gas-phase fluorination process'19884,683,329'Beneficial use of water in catalytic conversion of formamides to isocyanates'19874,620,030'Preparation of methyl isocyanate in a quartz reactor'19864,537,726'Multi-stage process with adiabatic reactors for the preparation of isocyanates'19854,474,996'Production of formaldehyde'19844,474,997'Oxidation process and catalyst therefor'19844,469,640'Catalytic conversion of formamides to isocyanates'19844,439,625'Production of formaldehyde'19844,429,055'Oxidation catalyst'19844,233,248'Process for oxidation of methanol to formaldehyde with nitrous oxide'19804,219,509'Methanol oxidation/dehydrogenation over silver-gold alloy'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–2014Patents assigned to DU PONT (180)· patent assignee history
1980–2020Based in Wilmington, DE, US· patent location history
2000Based in Newark, DE, US· patent location history
2010Based in Wilimington, DE, US· patent location history
2011–2014Patents assigned to RAO VELLIYUR NOTT MALLIKARJUNA (20)· patent assignee history
2011–2014Patents assigned to SIEVERT ALLEN CAPRON (12)· patent assignee history
2012–2014Patents assigned to NAPPA MARIO JOSEPH (12)· patent assignee history
2017–2020Patents assigned to CHEMOURS CO FC LLC (7)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DU PONT | 180 | 1980–2014 |
| RAO VELLIYUR NOTT MALLIKARJUNAself | 20 | 2011–2014 |
| NAPPA MARIO JOSEPH | 12 | 2012–2014 |
| SIEVERT ALLEN CAPRON | 12 | 2011–2014 |
| CHEMOURS CO FC LLC | 7 | 2017–2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Wilmington, Delaware, US | 186 | 1980–2020 |
| Wilimington, Delaware, US | 1 | 2010 |
| Newark, Delaware, US | 1 | 2000 |