Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5075416 | Novel process | Peter Staglich, Hans Spengler, Robert Zellerhoff | 1991-12-24 |
| 4539388 | Acid-modified, aromatic hydrocarbon resins and method for their production | Wolfgang Luecke, Herbert Beneke | 1985-09-03 |