Inventor
PECHHOLD ENGELBERT
US30 patents
Patents
30 patentsUS4120850AOct 17, 1978
Polyether urethane polymers prepared from a copolymer of tetrahydrofuran and ethylene oxide
DU PONT60 citations96
US6238792B1May 29, 2001
Fluorine-containing maleic acid terpolymer soil and stain resists
DU PONT24 citations92
US5834088ANov 10, 1998
Maleic anhydride/olefin polymer stain-resists
DU PONT30 citations92
US5770656AJun 23, 1998
Partial fluoroesters or thioesters of maleic acid polymers and their use as soil and stain resists
DU PONT24 citations92
US5707708AJan 13, 1998
Maleic anhydride/olefin polymer stain-resists
DU PONT43 citations92
US5654068AAug 5, 1997
Stain resists for polyamide substrates
DU PONT37 citations92
US5460887AOct 24, 1995
Stain-resistant polyamide substrates
DU PONT42 citations92
US5346726ASep 13, 1994
Maleic anhydride/vinyl or allyl ether polymer stain-resists
DU PONT22 citations92
US4958039ASep 18, 1990
Modified fluorocarbonylimino biurets
DU PONT51 citations92
US4251654AFeb 17, 1981
Copolyether glycols of tetrahydrofuran and alkylene oxides having low oligomeric cyclic ether content
DU PONT30 citations92
US5708087AJan 13, 1998
Carboxylic acid-containing polymer/resole stain-resists
DU PONT29 citations89
US5447755ASep 5, 1995
Substrates treated with bis(hydroxyphenyl) sulfone stain-resists
DU PONT23 citations89
US4383100AMay 10, 1983
Polyurethanes from oligomeric formal diols of THF copolymer glycols
DU PONT22 citations82
US4224432ASep 23, 1980
Polyurethanes prepared with tetrahydrofuran-alkylene oxide polymerizates having low oligomeric cyclic ether content
DU PONT27 citations82
US3981766ASep 21, 1976
Method of controlling fungi and bacteria in paper products
DU PONT25 citations82
US5460891AOct 24, 1995
Substrates treated with bis(hydroxyphenyl)sulfone stain-resists
DU PONT18 citations79
US6245116B1Jun 12, 2001
Fluorine-containing maleic acid terpolymer soil and stain resists
DU PONT9 citations74
US5945493AAug 31, 1999
Fluorine-containing maleic acid terpolymer soil and stain resists
DU PONT5 citations74
US5824372AOct 20, 1998
Maleic acid copolymers with fluorinated thioether end cap
DU PONT8 citations74
US5750445AMay 12, 1998
Treatment of polyamide materials with partial fluoroesters or fluorothioesters of maleic acid polymers and sulfonated aromatic condensates
DU PONT9 citations74
US5712348AJan 27, 1998
Maleic acid copolymers with fluorinated thioether end-cap
DU PONT13 citations74
US5670246ASep 23, 1997
Treatment of polyamide materials with partial fluoroesters or fluorothioesters of maleic acid polymers and sulfonated aromatic condensates
DU PONT13 citations74
US5358769AOct 25, 1994
Process providing durable stain-resistance by use of maleic anhydride polymers
DU PONT17 citations74
US5356689AOct 18, 1994
Process providing durable stain-resistance using methacrylic acid polymers
DU PONT17 citations74
US5260406ANov 9, 1993
Phenolic stain-resists using mercaptocarboxylic acid
DU PONT9 citations74
US5107033AApr 21, 1992
Perfluoroalkyl polyether glycols and their use
DU PONT14 citations74
US4355119AOct 19, 1982
Oligomeric formal diols of poly(tetramethylene ether) glycol and polyurethanes prepared therefrom
DU PONT6 citations74
US6093775AJul 25, 2000
Polymers with pendant fluoroalkylsulfide groups
DU PONT6 citations63
US4340719AJul 20, 1982
Oligomeric formal diols of poly(tetramethylene ether) glycol and polyurethanes prepared therefrom
DU PONT4 citations63
US4211862AJul 8, 1980
Block polymers of hydroquinone di-(β-hydroxyalkyl) ethers or isomers thereof and tetrahydrofuran/alkylene oxide copolymers
DU PONT5 citations62