EP

Engelbert Pechhold

EA E.I. Du Pont De Nemours And: 3 patents #23 of 718Top 4%
📍 Chadds Ford, PA: #3 of 22 inventorsTop 15%
🗺 Pennsylvania: #176 of 4,234 inventorsTop 5%
Overall (1994): #13,623 of 165,921Top 9%
3
Patents 1994

Issued Patents 1994

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
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