Inventor · disambiguated record
Manfred Bergfeld
Also filed as: BERGFELD MANFRED · BERGFELD MANFRED J · BERGFELD MANFRED JOSEF
26 granted patents·3 pending applications·326 citations·filing 1974–2005
96Inventor score
Top patents by PatentIndex Score
29 records- 0195US4898978AProcess for the preparation of N,N'-disubstituted guanidinesAKZO NV·Filed 1986·Granted Feb 6, 1990·60 cites·11 claims
- 0285US6008375AProcess for manufacturing 2-pyrrolidone or N-alkylpyrrolidonesAKZO NOBEL NV·Filed 1999·Granted Dec 28, 1999·34 cites·21 claims
- 0384US5543511AProcess for the preparation of level-off DP celluloseAKZO NOBEL NV·Filed 1994·Granted Aug 6, 1996·54 cites·13 claims
- 0482US5536849AProcess for producing gamma-butyrolactoneAKZO NOBEL NV·Filed 1994·Granted Jul 16, 1996·28 cites·8 claims
- 0581US5478950AProcess for producing pyrrolidone and N-alkyl pyrrolidonesAKZO NOBEL NV·Filed 1993·Granted Dec 26, 1995·26 cites·16 claims
- 0680US6075153AProcess for the preparation of Gamma-Butyrolactone and the use thereofAKZO NOBEL NV·Filed 1996·Granted Jun 13, 2000·24 cites·20 claims
- 0771US5436346AProcess for the preparation of benzothiazolyl-2-sulphenamidesAKZO NOBEL NV·Filed 1992·Granted Jul 25, 1995·12 cites·9 claims
- 0871US5015752AThiuram polysulfideAKZO NV·Filed 1985·Granted May 14, 1991·9 cites·9 claims
- 0970US4831171AProcess for synthesizing an ammonia complex of zinc bisdithiocarbamateAKZO NV·Filed 1986·Granted May 16, 1989·9 cites·4 claims
- 1065US3931210AProduction of p-aminobenzoic acidAKZO NV·Filed 1974·Granted Jan 6, 1976·6 cites·16 claims
- 1164US4223145AProcess for the preparation of organic mono- and polyisocyanatesAKZO NV·Filed 1979·Granted Sep 16, 1980·6 cites·7 claims
- 1258US5124450AProcess for the preparation of 2-aminodithiothiazoles and 2-aminotrithiothiazolesAKZO NV·Filed 1991·Granted Jun 23, 1992·6 cites·17 claims
- 1358US4053510AProcess for the production of aromatic and cycloaliphatic dicarboxylic acid diamidesAKZO NV·Filed 1974·Granted Oct 11, 1977·4 cites·9 claims
- 1456US5648546AMethod for manufacturing tert-butylamineAKZO NOBEL NV·Filed 1995·Granted Jul 15, 1997·15 cites·15 claims
- 1551US5021603AThiuram polysulfide productionAKZO NV·Filed 1985·Granted Jun 4, 1991·3 cites·8 claims
- 1648US7482424B2Process for the preparation of polymeric hydroxyalkyl terminated polysulphidesAKZO NOBEL NV·Filed 2005·Granted Jan 27, 2009·0 cites·20 claims
- 1747US7423183B2Oxidation of mercaptoethanolTHIOPLAST CHEMICALS GMBH & CO·Filed 2004·Granted Sep 9, 2008·3 cites·18 claims
- 1846US5459249AProcess for continuous manufacture of alkylglycosidesAKZO NOBEL NV·Filed 1994·Granted Oct 17, 1995·6 cites·22 claims
- 1945US6166232AProcess for producing ester quatsAKZO NOBEL NV·Filed 1997·Granted Dec 26, 2000·3 cites·16 claims
- 2045US5367082AProcess for the preparation of 2-mercaptobenzothiazoleAKZO NV·Filed 1993·Granted Nov 22, 1994·11 cites·34 claims
- 2141US5430187AMethod for manufacturing dibenzylamineAKZO NV·Filed 1992·Granted Jul 4, 1995·2 cites·12 claims
- 2238US5977350AProcess for the oxidation of di-, tri-, oligo- and polysaccharides into polyhydroxycarboxylic acidsAKZO NOBEL NV·Filed 1998·Granted Nov 2, 1999·1 cites·15 claims
- 2337US6320084B2Process for the preparation of glyceraldehyde and derivatives thereofAKZO NOBEL NV·Filed 2001·Granted Nov 20, 2001·0 cites·10 claims
- 2436US2006287466A1Method for production of prepolymers made from polysulphides and polyepoxidesZEITLER MICHAEL·Filed 2004·Application pending·0 cites
- 2532US6583231B2Process to make aminated polyolefinsAKZO NOBEL NV·Filed 2001·Granted Jun 24, 2003·0 cites·8 claims
- 2632US4853475AProcess for synthesizing alkylene bisdithiocarbamates or the ammonia adducts thereof as well as mixtures that can be synthesized therebyAKZO NV·Filed 1986·Granted Aug 1, 1989·0 cites·7 claims
- 2732US2005119449A1Method for producing epoxidised polysulfidesFiled 2003·Application pending·0 cites
- 2831US4783572AProcess for the preparation of ethylene-ethane mixturesAKZO NV·Filed 1986·Granted Nov 8, 1988·4 cites·13 claims
- 2931US2005131207A1Method for the production of epoxidized polysulfidesFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →