Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5298218 | Palladium based alloy for dental applications | Werner Groll, Doris Hathaway, Bernd Kempf | 1994-03-29 |
| 4859412 | Method of producing alloyed powders for dental amalgams | Werner Groll, Doris Hathaway | 1989-08-22 |
| 4681735 | Use of silver-free palladium alloys for firing on dental ceramics | Werner Groll, Doris Hathaway, Rudolf Wagner | 1987-07-21 |