Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830932 | Heat resistant light alloy articles and method of manufacturing same | Atsuo Tanaka, Yoshiaki Tatematsu | 1989-05-16 |
| 4802524 | Method for making composite material using oxygen | — | 1989-02-07 |
| 4798770 | Heat resisting and insulating light alloy articles and method of manufacture | Mototsugu Koyama, Masaaki Nagaoka | 1989-01-17 |