Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4973610 | Expandable styrene polymers | Klaus Hahn, Uwe Guhr, Hans Hintz | 1990-11-27 |
KR
Karl H. Roehrig
Overall (All Time): #3,916,039 of 4,157,543Top 95%
1
Patents All Time