Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4309457 | Process of producing multilayer-coated composite powder | Yoshio Kawasumi | 1982-01-05 |
| 4309458 | Process of producing composite powder coated with noble metal | Yoshio Kawasumi | 1982-01-05 |