Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859415 | Method of improving the resistance of Ti-based alloys to corrosion in deep-well environments | Yoshiaki Shida, Shiro Kitayama | 1989-08-22 |
| 4824373 | Swaged metal denture base | Minoru Okada, Yoshiaki Shida, Isamu Kato, Kazuyuki Nakano, Ryozo Isomura | 1989-04-25 |