Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820485 | Method of producing an iron-, cobalt- and nickel-base alloy having low contents of sulphur, oxygen and nitrogen | Tohei Ototani, Toru Degawa, Kenichi Kusumoto | 1989-04-11 |