Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5096931 | Expandable styrene polymers | Dietmar Wittenberg, Klaus Hahn, Uwe Guhr, Hans Hintz, Michael Riethues | 1992-03-17 |
MD
Michael P. O'Callaghan, deceased
Overall (All Time): #3,846,115 of 4,157,543Top 95%
1
Patents All Time