Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5128021 | Pitch from coal tar pitch, method of its production, as well as application of such pitch material | Ingo Romey, Rudolf Geier, Rolf Helmut Joest | 1992-07-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5128021 | Pitch from coal tar pitch, method of its production, as well as application of such pitch material | Ingo Romey, Rudolf Geier, Rolf Helmut Joest | 1992-07-07 |