Inventor · disambiguated record
Engelbert Pechhold
Also filed as: PECHHOLD ENGELBERT
30 granted patents·642 citations·filing 1975–1999
98Inventor score
Files withDU PONT30
Top patents by PatentIndex Score
30 records- 0194US4120850APolyether urethane polymers prepared from a copolymer of tetrahydrofuran and ethylene oxideDU PONT·Filed 1977·Granted Oct 17, 1978·60 cites·9 claims
- 0293US4958039AModified fluorocarbonylimino biuretsDU PONT·Filed 1984·Granted Sep 18, 1990·51 cites·25 claims
- 0384US5707708AMaleic anhydride/olefin polymer stain-resistsDU PONT·Filed 1996·Granted Jan 13, 1998·43 cites·11 claims
- 0484US4251654ACopolyether glycols of tetrahydrofuran and alkylene oxides having low oligomeric cyclic ether contentDU PONT·Filed 1979·Granted Feb 17, 1981·30 cites·6 claims
- 0583US5460887AStain-resistant polyamide substratesDU PONT·Filed 1995·Granted Oct 24, 1995·42 cites·13 claims
- 0682US4224432APolyurethanes prepared with tetrahydrofuran-alkylene oxide polymerizates having low oligomeric cyclic ether contentDU PONT·Filed 1978·Granted Sep 23, 1980·27 cites·10 claims
- 0781US5654068AStain resists for polyamide substratesDU PONT·Filed 1996·Granted Aug 5, 1997·37 cites·13 claims
- 0880US5834088AMaleic anhydride/olefin polymer stain-resistsDU PONT·Filed 1997·Granted Nov 10, 1998·30 cites·11 claims
- 0980US3981766AMethod of controlling fungi and bacteria in paper productsDU PONT·Filed 1975·Granted Sep 21, 1976·25 cites·9 claims
- 1076US4383100APolyurethanes from oligomeric formal diols of THF copolymer glycolsDU PONT·Filed 1982·Granted May 10, 1983·22 cites·6 claims
- 1175US5460891ASubstrates treated with bis(hydroxyphenyl)sulfone stain-resistsDU PONT·Filed 1994·Granted Oct 24, 1995·18 cites·9 claims
- 1273US6238792B1Fluorine-containing maleic acid terpolymer soil and stain resistsDU PONT·Filed 1999·Granted May 29, 2001·24 cites·6 claims
- 1373US5708087ACarboxylic acid-containing polymer/resole stain-resistsDU PONT·Filed 1997·Granted Jan 13, 1998·29 cites·12 claims
- 1473US5447755ASubstrates treated with bis(hydroxyphenyl) sulfone stain-resistsDU PONT·Filed 1994·Granted Sep 5, 1995·23 cites·13 claims
- 1569US5346726AMaleic anhydride/vinyl or allyl ether polymer stain-resistsDU PONT·Filed 1992·Granted Sep 13, 1994·22 cites·14 claims
- 1667US5107033APerfluoroalkyl polyether glycols and their useDU PONT·Filed 1990·Granted Apr 21, 1992·14 cites·9 claims
- 1765US5770656APartial fluoroesters or thioesters of maleic acid polymers and their use as soil and stain resistsDU PONT·Filed 1995·Granted Jun 23, 1998·24 cites·19 claims
- 1859US5712348AMaleic acid copolymers with fluorinated thioether end-capDU PONT·Filed 1996·Granted Jan 27, 1998·13 cites·4 claims
- 1959US5358769AProcess providing durable stain-resistance by use of maleic anhydride polymersDU PONT·Filed 1993·Granted Oct 25, 1994·17 cites·11 claims
- 2058US5670246ATreatment of polyamide materials with partial fluoroesters or fluorothioesters of maleic acid polymers and sulfonated aromatic condensatesDU PONT·Filed 1995·Granted Sep 23, 1997·13 cites·11 claims
- 2158US5356689AProcess providing durable stain-resistance using methacrylic acid polymersDU PONT·Filed 1993·Granted Oct 18, 1994·17 cites·11 claims
- 2256US6245116B1Fluorine-containing maleic acid terpolymer soil and stain resistsDU PONT·Filed 1999·Granted Jun 12, 2001·9 cites·5 claims
- 2352US5824372AMaleic acid copolymers with fluorinated thioether end capDU PONT·Filed 1997·Granted Oct 20, 1998·8 cites·6 claims
- 2449US5750445ATreatment of polyamide materials with partial fluoroesters or fluorothioesters of maleic acid polymers and sulfonated aromatic condensatesDU PONT·Filed 1997·Granted May 12, 1998·9 cites·11 claims
- 2549US5260406APhenolic stain-resists using mercaptocarboxylic acidDU PONT·Filed 1992·Granted Nov 9, 1993·9 cites·9 claims
- 2645US4355119AOligomeric formal diols of poly(tetramethylene ether) glycol and polyurethanes prepared therefromDU PONT·Filed 1981·Granted Oct 19, 1982·6 cites·4 claims
- 2745US4211862ABlock polymers of hydroquinone di-(β-hydroxyalkyl) ethers or isomers thereof and tetrahydrofuran/alkylene oxide copolymersDU PONT·Filed 1978·Granted Jul 8, 1980·5 cites·16 claims
- 2843US6093775APolymers with pendant fluoroalkylsulfide groupsDU PONT·Filed 1998·Granted Jul 25, 2000·6 cites·16 claims
- 2943US5945493AFluorine-containing maleic acid terpolymer soil and stain resistsDU PONT·Filed 1998·Granted Aug 31, 1999·5 cites·6 claims
- 3040US4340719AOligomeric formal diols of poly(tetramethylene ether) glycol and polyurethanes prepared therefromDU PONT·Filed 1980·Granted Jul 20, 1982·4 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →