Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824734 | Tin-containing iron base powder and process for making | — | 1989-04-25 |
| 4804409 | Alloy steel powder for powder metallurgy | Masaki Kawano, Kuniaki Ogura, Teruyoshi Abe | 1989-02-14 |