DK

Donn K. Kauffman

UN Unknown: 11 patents #718 of 83,584Top 1%
📍 Daphne, AL: #9 of 67 inventorsTop 15%
🗺 Alabama: #1,520 of 10,951 inventorsTop 15%
Overall (All Time): #1,055,184 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5505329 Multi-walled panels 1996-04-09
5368670 Method of making multi-walled pipes and storage tanks for toxic and corrosive fluids 1994-11-29
5308423 Method of making multi-walled pipes and storage tanks for toxic and corrosive fluids 1994-05-03
5232119 Multi-walled pipes and storage tanks for toxic and corrosive fluids 1993-08-03
5143244 Multi-walled pipes and storage tanks for toxic and corrosive fluids 1992-09-01