Inventor · disambiguated record
Frank E. Herkes
Also filed as: HERKES FRANK · HERKES FRANK E · HERKES FRANK EDWARD
28 granted patents·4 pending applications·450 citations·filing 1975–2016
97Inventor score
Top patents by PatentIndex Score
32 records- 0198US4283306ACrystalline silica and use in alkylation of aromaticsDU PONT·Filed 1980·Granted Aug 11, 1981·95 cites·10 claims
- 0293US5814508APreparation of lactams from aliphatic α,ω-dinitrilesDU PONT·Filed 1997·Granted Sep 29, 1998·48 cites·1 claims
- 0391US5858736APreparation of lactams from aliphatic α,ω-dinitrilesDU PONT·Filed 1996·Granted Jan 12, 1999·42 cites·20 claims
- 0490US6900337B2Production of 5-methyl-1-hydrocarbyl-2-pyrrolidone by reductive amination of levulinic acidDU PONT·Filed 2003·Granted May 31, 2005·23 cites·38 claims
- 0590US5700934AProcess for the preparation of epsilon-caprolactam and epsilon-caprolactam precursorsDSM NV·Filed 1996·Granted Dec 23, 1997·63 cites·14 claims
- 0688US4444989AMethylation of toluene to para-xylene catalyzed by crystalline silicaDU PONT·Filed 1979·Granted Apr 24, 1984·20 cites·19 claims
- 0787US6562603B23-hydroxycarboxylic acid production and use in branched polymersDU PONT·Filed 2001·Granted May 13, 2003·12 cites·6 claims
- 0884US5922589APreparation of lactams from aliphatic α,ω-DinitilesDU PONT·Filed 1998·Granted Jul 13, 1999·18 cites·1 claims
- 0983US4885391AProduction of C4 to C12 aminesDU PONT·Filed 1988·Granted Dec 5, 1989·18 cites·5 claims
- 1079US6066490ANitrilase-producing acidovorax facilisDU PONT·Filed 1997·Granted May 23, 2000·13 cites·1 claims
- 1177US5070202ACyanobutylation of amines with 2-pentenitrileDU PONT·Filed 1990·Granted Dec 3, 1991·15 cites·6 claims
- 1273US7091011B23-hydroxycarboxylic acid production and use in branched polymersDU PONT·Filed 2003·Granted Aug 15, 2006·3 cites·4 claims
- 1372US6384263B1Process for making 3-hydroxyalkanelnitriles and conversion of the 3-hydroxyalkanelnitrile to an hydroxyaminoalkaneDU PONT·Filed 2001·Granted May 7, 2002·5 cites·7 claims
- 1470US6077955APreparation of lactams from aliphatic αω-dinitrilesDU PONT·Filed 1998·Granted Jun 20, 2000·8 cites·1 claims
- 1564US7138480B23-Hydroxycarboxylic acid production and use in branched polymersDU PONT·Filed 2003·Granted Nov 21, 2006·1 cites·2 claims
- 1664US5908954APreparation of lactams from aliphatic α, ω-dinitrilesDU PONT·Filed 1998·Granted Jun 1, 1999·5 cites·1 claims
- 1763US5491264APreparation of isophorone diamineDU PONT·Filed 1994·Granted Feb 13, 1996·7 cites·3 claims
- 1862US5902883ACyanobutylation of ammonia, alkylamines and hydrazine with 3-pentenenitrile, 4-pentenenitrile or mixtures thereofDU PONT·Filed 1997·Granted May 11, 1999·8 cites·10 claims
- 1962US5717089AProcess for the preparation of E-caprolactamDSM NV·Filed 1996·Granted Feb 10, 1998·10 cites·15 claims
- 2060US5072044APreparation of ortho-phenylenediamineDU PONT·Filed 1990·Granted Dec 10, 1991·6 cites·4 claims
- 2160US2007004017A13-hydroxycarboxylic acid production and use in branched polymersBRAMUCCI MICHAEL G·Filed 2006·Application pending·0 cites
- 2259US5898085AProduction of 1,3-diaminopentane by hydrogenation of 3-aminopentanenitrileDU PONT·Filed 1998·Granted Apr 27, 1999·8 cites·3 claims
- 2357US5877314AProcess to continuously prepare an aqueous mixture of episilon caprolactum and episilon caprolactum precursorsDSM NV·Filed 1997·Granted Mar 2, 1999·8 cites·14 claims
- 2456US5936114APreparation of lactams from aliphatic α, ω-dinitrilesDU PONT·Filed 1998·Granted Aug 10, 1999·3 cites·1 claims
- 2554US4020051AControl of nitrogen oxide reactions in off-gases from the diazotization/coupling of aromatic aminesDU PONT·Filed 1975·Granted Apr 26, 1977·8 cites·12 claims
- 2646US4279815AProduction of high-quality aromatic amino azo compounds by the rearrangement of 1,3-diaryl triazenesHERKES FRANK E·Filed 1979·Granted Jul 21, 1981·3 cites·10 claims
- 2740US2015025279A1Process for producing dodecane-1,12-diol by reduction of lauryl lactone produced from the oxidation of cyclododecanoneINVISTA NORTH AMERICA SARL·Filed 2013·Application pending·0 cites
- 2838US2016200667A1Novel process for making omega-aminoalkylenic alkyl esterINVISTA NORTH AMERICA SARL·Filed 2016·Application pending·0 cites
- 2936US2016030857A1Component Recovery ProcessINVISTA NORTH AMERICA SARL·Filed 2015·Application pending·0 cites
- 3032US5149809ASynthesis of 2-alkylhexahydropyrimidines from nitrilesDU PONT·Filed 1991·Granted Sep 22, 1992·0 cites·7 claims
- 3131US5834617ASelective dimerization of pentenenitrileDU PONT·Filed 1997·Granted Nov 10, 1998·0 cites·6 claims
- 3231US5808078AProcess for preparation of 1-alkyl-3-methylpiperidone-2 and 1-alkyl-5-methylpiperidone-2DU PONT·Filed 1997·Granted Sep 15, 1998·0 cites·6 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →