Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4696996 | Preparation of polyphenylene ethers, and an apparatus for this purpose | Hermann Brandt, Hermann Fischer, Hermann Dreher, Eduard Heil, Juergen Hambrecht +6 more | 1987-09-29 |