FW

Frank J. Weigert

EA E.I. Du Pont De Nemours And: 30 patents #130 of 8,010Top 2%
📍 Wilmington, DE: #106 of 3,182 inventorsTop 4%
🗺 Delaware: #211 of 7,163 inventorsTop 3%
Overall (All Time): #126,116 of 4,157,543Top 4%
30
Patents All Time

Issued Patents All Time

Showing 1–25 of 30 patents

Patent #TitleCo-InventorsDate
6706935 Catalytic equilibration to increase the relative mole fraction of CF3CHCI, CF3CHCI2 or CF3CF2H in a composition Leo Ernest Manzer 2004-03-16
6194619 Gem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositions V. N. Mallikarjuna Rao, Carl G. Krespan 2001-02-27
5406009 Catalytic equilibration to improve the relative yield of selected halocarbons William H. Manogue, V. N. Mallikarjuna Rao 1995-04-11
5302765 Catalytic process for producing CF.sub.3 CHClF Leo Ernest Manzer, V. N. Mallikarjuna Rao 1994-04-12
5268122 Gem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositions V. N. Mallikarjuna Rao, Carl G. Krespan 1993-12-07
5250213 1,1,1,2,2,3,3,4,4,5,6-undecafluorohexane and use thereof in compositions and processes for cleaning Shlomo Rozen 1993-10-05
5237088 Transfer hydrogenation of nitriles using amine donors 1993-08-17
5221361 Compositions of 1,1,1,2,2,5,5,5,-octafluoro-4-trifluoromethylpentane and use thereof for cleaning solid surfaces Douglas Robert Anton 1993-06-22
5216152 Process for the catalytic pyrolysis of bis(hexamethylene)triamine 1993-06-01
5177273 Process for the manufacture of halogen-substituted propanes containing hydrogen and at least five fluorine substituents Douglas W. Bruhnke, Jan J. Lerou, V. N. Mallikarjuna Rao, William C. Seidel 1993-01-05
5171890 Process for preparing methyl- and ethyl-substituted primary anilines 1992-12-15
5157171 Process for chlorofluoropropanes Allen Capron Sievert, Carl G. Krespan 1992-10-20
5146018 Hydrogenolysis/dehydrohalogenation process Carl S. Kellner, V. N. Mallikarjuna Rao 1992-09-08
5126484 Process for preparing methyl- and ethyl-substituted primary anilines 1992-06-30
5120883 Catalytic process for producing CCl.sub.3 CF.sub.3 V. N. Mallikarjuna Rao, Leo Ernest Manzer 1992-06-09
5093527 Process for preparing methyl- and ethyl-substituted primary anilines 1992-03-03
5073290 Compositions of 1,1,1,2,2,5,5,5-octafluoro-4-trifluormethypentane and use thereof for cleaning solid surfaces Douglas Robert Anton 1991-12-17
5068473 Hydrogenolysis/dehydrohalogenation process Carl S. Kellner, V. N. Mallikarjuna Rao 1991-11-26
5030372 Catalytic equilibration to improve the relative yield of selected halocarbons William H. Manogue, V. N. Mallikarjuna Rao 1991-07-09
RE33549 Process for preparing a mixture of methyl- or ethyl-substituted primary anilines 1991-03-05
4910351 Process for preparing (polyfluoroalkyl)polyfluoroarenes 1990-03-20
4820883 Defluorination process using activated carbon 1989-04-11
4820884 Defluorination process using activated carbon 1989-04-11
4814522 Catalytic fluoroolefin transhalogenations 1989-03-21
4804784 Process for preparing methyl- and ethyl-substituted primary anilines 1989-02-14