EP

Engelbert Pechhold

EA E.I. Du Pont De Nemours And: 28 patents #148 of 8,010Top 2%
📍 Chadds Ford, PA: #14 of 258 inventorsTop 6%
🗺 Pennsylvania: #2,031 of 74,527 inventorsTop 3%
Overall (All Time): #140,244 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDate
6245116 Fluorine-containing maleic acid terpolymer soil and stain resists Peter Michael Murphy 2001-06-12
6238792 Fluorine-containing maleic acid terpolymer soil and stain resists Peter Michael Murphy 2001-05-29
6093775 Polymers with pendant fluoroalkylsulfide groups 2000-07-25
5945493 Fluorine-containing maleic acid terpolymer soil and stain resists Peter Michael Murphy 1999-08-31
5834088 Maleic anhydride/olefin polymer stain-resists 1998-11-10
5824372 Maleic acid copolymers with fluorinated thioether end cap 1998-10-20
5770656 Partial fluoroesters or thioesters of maleic acid polymers and their use as soil and stain resists 1998-06-23
5750445 Treatment of polyamide materials with partial fluoroesters or fluorothioesters of maleic acid polymers and sulfonated aromatic condensates Peter Michael Murphy 1998-05-12
5712348 Maleic acid copolymers with fluorinated thioether end-cap 1998-01-27
5708087 Carboxylic acid-containing polymer/resole stain-resists Robert Craig Buck 1998-01-13
5707708 Maleic anhydride/olefin polymer stain-resists 1998-01-13
5670246 Treatment of polyamide materials with partial fluoroesters or fluorothioesters of maleic acid polymers and sulfonated aromatic condensates Peter Michael Murphy 1997-09-23
5654068 Stain resists for polyamide substrates 1997-08-05
5460887 Stain-resistant polyamide substrates 1995-10-24
5460891 Substrates treated with bis(hydroxyphenyl)sulfone stain-resists Robert Craig Buck, Donald Douglas May 1995-10-24
5447755 Substrates treated with bis(hydroxyphenyl) sulfone stain-resists Robert Craig Buck, Donald Douglas May 1995-09-05
5358769 Process providing durable stain-resistance by use of maleic anhydride polymers 1994-10-25
5356689 Process providing durable stain-resistance using methacrylic acid polymers 1994-10-18
5346726 Maleic anhydride/vinyl or allyl ether polymer stain-resists 1994-09-13
5260406 Phenolic stain-resists using mercaptocarboxylic acid 1993-11-09
5107033 Perfluoroalkyl polyether glycols and their use 1992-04-21
4958039 Modified fluorocarbonylimino biurets 1990-09-18
4383100 Polyurethanes from oligomeric formal diols of THF copolymer glycols 1983-05-10
4355119 Oligomeric formal diols of poly(tetramethylene ether) glycol and polyurethanes prepared therefrom 1982-10-19
4340719 Oligomeric formal diols of poly(tetramethylene ether) glycol and polyurethanes prepared therefrom 1982-07-20