AS

Allen Capron Sievert

EA E.I. Du Pont De Nemours And: 150 patents #2 of 8,010Top 1%
TF The Chemours Company Fc: 18 patents #8 of 195Top 5%
📍 Elkwood Estates, MD: #1 of 31 inventorsTop 4%
🗺 Maryland: #11 of 35,612 inventorsTop 1%
Overall (All Time): #4,890 of 4,157,543Top 1%
168
Patents All Time

Issued Patents All Time

Showing 51–75 of 168 patents

Patent #TitleCo-InventorsDate
7981312 Processes for producing and compositions comprising 2,3,3,3-tetrafluoropropene and/or 1,2,3,3-tetrafluoropropene Mario Joseph Nappa, Velliyur Mallikarjuna Nott Rao 2011-07-19
7981311 Process and methods of purification for the manufacture fluorocarbons Mario Joseph Nappa, Velliyur Nott Mallikarjuna Rao, Jeffrey P. Knapp 2011-07-19
7959828 Solvent compositions comprising unsaturated fluorinated hydrocarbons Mario Joseph Nappa, Melodie A. Schweitzer, Ekaterina N. Swearingen 2011-06-14
7943015 Use of copolymers of perfluoro(alkyl vinyl ether) for photochemical reactions Velliyur Nott Mallikarjuna Rao 2011-05-17
7928271 Process for producing 1,2,3,3,3-pentafluoropropene and related azeotropic compositions 2011-04-19
7922930 Azeotropic compositions comprising fluorinated olefins for cleaning applications Melodie A. Schweitzer, Joan Ellen Bartelt, Barbara Haviland Minor 2011-04-12
7906693 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 Mario Joseph Nappa, Velliyur Nott Mallikarjuna Rao 2011-03-15
7897823 Process for production of azeotrope compositions comprising hydrofluoroolefin and hydrogen fluoride and uses of said azeotrope compositions in separation processes Ralpha Newton Miller, Mario Joseph Nappa, Velliyur Nott Mallikarjuna Rao 2011-03-01
7872161 Process for producing 2,3,3,3-tetrafluoropropene Velliyur Nott Mallikarjuna Rao 2011-01-18
7846355 Solvent compositions comprising unsaturated fluorinated hydrocarbons Mario Joseph Nappa, Melodie A. Schweitzer, Ekaterina N. Swearingen 2010-12-07
7833434 Tetrafluoropropene production processes Velliyur Nott Mallikarjuna Rao, Mario Joseph Nappa 2010-11-16
7744774 Azeotropic compositions comprising fluorinated olefins for cleaning applications Melodie A. Schweitzer, Joan Ellen Bartelt, Barbara Haviland Minor 2010-06-29
7728183 Selectively reacting olefins having a terminal CF2 group in a mixture Mario Joseph Nappa, Victor Filippovich Cherstkov, Nina Ivanova Delyagina 2010-06-01
7722781 Tetrafluoropropene production processes Velliyur Nott Mallikarjuna Rao, Mario Joseph Nappa 2010-05-25
7718089 Solvent compositions comprising unsaturated fluorinated hydrocarbons Mario Joseph Nappa, Melodie A. Schweitzer, Ekaterina N. Swearingen 2010-05-18
7709438 Azeotrope compositions comprising nonafluoropentene and hydrogen fluoride and uses thereof Ralph Newton Miller, Mario Joseph Nappa, Velliyur Nott Mallikarjuna Rao 2010-05-04
7708903 Compositions comprising fluoroolefins and uses thereof Mario Joseph Nappa, Barbara Haviland Minor, Thomas J. Leck, Velliyur Nott Mallikarjuna Rao, Ekaterina N. Swearingen +3 more 2010-05-04
7700004 Solvent compositions comprising unsaturated fluorinated hydrocarbons Mario Joseph Nappa, Melodie A. Schweitzer, Ekaterina N. Swearingen 2010-04-20
7678949 Process for the preparation of 1,3,3,3-tetrafluoropropene and/or 2,3,3,3-tetrafluoropropene Velliyur Nott Mallikarjuna Rao, H. David Rosenfeld, Shekhar Subramoney 2010-03-16
7663007 Process for the preparation of 1,3,3,3-tetrafluoropropene and/or 1,1,3,3,3-pentafluoropropene Velliyur Nott Mallikarjuna Rao, H. David Rosenfeld, Shekhar Subramoney 2010-02-16
7659436 Process for the preparation of 1,1,1,3,3-penta-fluoropropane and/or 1,1,1,3,3,3-hexafluoropropane Velliyur Nott Mallikarjuna Rao, H. David Rosenfeld, Shekhar Subramoney 2010-02-09
7659435 Process for the preparation of 1,1,1,3,3-pentafluoropropane and 1,1,1,2,3-pentafluoropropane Velliyur Nott Mallikarjuna Rao, H. David Rosenfeld, Shekhar Subramoney 2010-02-09
7641809 Tracer-containing compositions Thomas J. Leck, Stuart C. Bricker 2010-01-05
7641808 Azeotropic compositions comprising fluorinated olefins for cleaning applications Melodie A. Schweitzer, Joan Ellen Bartelt, Barbara Haviland Minor 2010-01-05
7524999 Process for the production of 1,1,1,3,3,3-hexafluoropropane Mario Joseph Nappa, Velliyur Nott Mallikarjuna Rao 2009-04-28