Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5587117 | Process for insulating pipes using polyurethane rigid foams by the rotational casting process | Norbert Eisen, Peter Haas | 1996-12-24 |
| 5534299 | Process for insulating pipes | Norbert Eisen | 1996-07-09 |