Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4761323 | Method and article for the production of porous fiber bats | August Muhlratzer, Siegfried Lassmann, Herbert Gutwein, Renate Sanden | 1988-08-02 |
| 4551328 | Selectively absorbent layer for solar collectors, and method of making it | Edwin Erben, August Muhlratzer, Boy Cornils, Bela Tihanyi, Werner DeWin | 1985-11-05 |