Inventor · disambiguated record
Frank J. Weigert
Also filed as: WEIGERT FRANK J · WEIGERT FRANK JULIAN
34 granted patents·469 citations·filing 1976–2003
97Inventor score
Files withDU PONT34
Top patents by PatentIndex Score
34 records- 0196US5268122AGem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositionsDU PONT·Filed 1991·Granted Dec 7, 1993·64 cites·8 claims
- 0294US5157171AProcess for chlorofluoropropanesDU PONT·Filed 1991·Granted Oct 20, 1992·52 cites·11 claims
- 0392US4254061APreparation of monomethylamineDU PONT·Filed 1979·Granted Mar 3, 1981·28 cites·8 claims
- 0489US5177273AProcess for the manufacture of halogen-substituted propanes containing hydrogen and at least five fluorine substituentsDU PONT·Filed 1991·Granted Jan 5, 1993·36 cites·36 claims
- 0589US5068473AHydrogenolysis/dehydrohalogenation processDU PONT·Filed 1990·Granted Nov 26, 1991·36 cites·30 claims
- 0687US6194619B1Gem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositionsDU PONT·Filed 1993·Granted Feb 27, 2001·22 cites·8 claims
- 0784US5146018AHydrogenolysis/dehydrohalogenation processDU PONT·Filed 1991·Granted Sep 8, 1992·24 cites·17 claims
- 0882US4820884ADefluorination process using activated carbonDU PONT·Filed 1987·Granted Apr 11, 1989·17 cites·10 claims
- 0982US4814522ACatalytic fluoroolefin transhalogenationsDU PONT·Filed 1988·Granted Mar 21, 1989·18 cites·7 claims
- 1081US4313003APreparation of dimethylamineDU PONT·Filed 1980·Granted Jan 26, 1982·15 cites·9 claims
- 1171US5302765ACatalytic process for producing CF3 CHClFDU PONT·Filed 1992·Granted Apr 12, 1994·28 cites·17 claims
- 1271US4734503ACatalytic transhalogenation of haloaromaticsDU PONT·Filed 1986·Granted Mar 29, 1988·10 cites·33 claims
- 1370US4059628APreparation of aromatic aminesDU PONT·Filed 1976·Granted Nov 22, 1977·8 cites·38 claims
- 1469US6706935B2Catalytic equilibration to increase the relative mole fraction of CF3CHCI, CF3CHCI2 or CF3CF2H in a compositionDU PONT·Filed 2003·Granted Mar 16, 2004·4 cites·20 claims
- 1565US5216152AProcess for the catalytic pyrolysis of bis(hexamethylene)triamineDU PONT·Filed 1992·Granted Jun 1, 1993·8 cites·14 claims
- 1665US4136156AProduction of hcn from organic nitrilesDU PONT·Filed 1976·Granted Jan 23, 1979·10 cites·9 claims
- 1760US5073290ACompositions of 1,1,1,2,2,5,5,5-octafluoro-4-trifluormethypentane and use thereof for cleaning solid surfacesDU PONT·Filed 1990·Granted Dec 17, 1991·19 cites·20 claims
- 1859US5120883ACatalytic process for producing CCl3 CF3DU PONT·Filed 1991·Granted Jun 9, 1992·18 cites·17 claims
- 1959US4593124AProcess for preparing a mixture of methyl- or ethyl-substituted primary anilinesDU PONT·Filed 1984·Granted Jun 3, 1986·5 cites·14 claims
- 2056US4064171AProcess for preparation of aromatic aminesDU PONT·Filed 1976·Granted Dec 20, 1977·4 cites·36 claims
- 2154US4820883ADefluorination process using activated carbonDU PONT·Filed 1987·Granted Apr 11, 1989·4 cites·9 claims
- 2252US4754084APreparation of substituted fluorobenzenesDU PONT·Filed 1987·Granted Jun 28, 1988·4 cites·14 claims
- 2351US5237088ATransfer hydrogenation of nitriles using amine donorsDU PONT·Filed 1992·Granted Aug 17, 1993·4 cites·11 claims
- 2450US5250213A1,1,1,2,2,3,3,4,4,5,6-undecafluorohexane and use thereof in compositions and processes for cleaningDU PONT·Filed 1991·Granted Oct 5, 1993·12 cites·6 claims
- 2548US4164552APreparation of hydrogen cyanideDU PONT·Filed 1978·Granted Aug 14, 1979·4 cites·10 claims
- 2646US4061685ACatalytic synthesis of phenolsDU PONT·Filed 1976·Granted Dec 6, 1977·2 cites·14 claims
- 2743US4910351AProcess for preparing (polyfluoroalkyl)polyfluoroarenesDU PONT·Filed 1987·Granted Mar 20, 1990·2 cites·21 claims
- 2839US5030372ACatalytic equilibration to improve the relative yield of selected halocarbonsDU PONT·Filed 1990·Granted Jul 9, 1991·4 cites·12 claims
- 2937US5221361ACompositions of 1,1,1,2,2,5,5,5,-octafluoro-4-trifluoromethylpentane and use thereof for cleaning solid surfacesDU PONT·Filed 1991·Granted Jun 22, 1993·5 cites·13 claims
- 3033US5406009ACatalytic equilibration to improve the relative yield of selected halocarbonsDU PONT·Filed 1991·Granted Apr 11, 1995·0 cites·11 claims
- 3132US4804784AProcess for preparing methyl- and ethyl-substituted primary anilinesDU PONT·Filed 1985·Granted Feb 14, 1989·2 cites·7 claims
- 3231US5126484AProcess for preparing methyl- and ethyl-substituted primary anilinesDU PONT·Filed 1985·Granted Jun 30, 1992·0 cites·5 claims
- 3330US5171890AProcess for preparing methyl- and ethyl-substituted primary anilinesDU PONT·Filed 1985·Granted Dec 15, 1992·0 cites·4 claims
- 3430US5093527AProcess for preparing methyl- and ethyl-substituted primary anilinesDU PONT·Filed 1985·Granted Mar 3, 1992·0 cites·4 claims
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