Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880476 | Process for the phosphate chemical conversion treatment of a steel material | Shigeki Matsuda, Wataru Gotou, Takahiro Ohnuki | 1989-11-14 |
| 4832982 | Laser process for forming dispersion alloy layer from powder on metallic base | Katsuhiko Ueda, Soya Takagi, Minoru Kawasaki | 1989-05-23 |
| 4818307 | Dispersion strengthened copper-base alloy | Katsuhiko Ueda, Soya Takagi, Minoru Kawasaki | 1989-04-04 |