DH

David E. Heyer

EA E.I. Du Pont De Nemours And: 5 patents #1,460 of 8,010Top 20%
📍 Kingston, OH: #3 of 14 inventorsTop 25%
🗺 Ohio: #15,837 of 73,341 inventorsTop 25%
Overall (All Time): #1,052,447 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5753172 Film bead heating for simultaneous stretching Albert W. Forrest, Jr., Charles Jolliffe 1998-05-19
4783304 Vacuum pinning process 1988-11-08
4501712 Vacuum pinning of molten thermoplastic film to a roughened casting roll 1985-02-26
4310295 Device for uniform web pinning 1982-01-12
4255365 Pneumatic gauge adjustment of edge-pinned cast web 1981-03-10