Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6270914 | Surface-hardened titanium material, surface hardening method of titanium material, watchcase decoration article, and decoration article | Naoto Ogasawara, Yasumasa Kusano, Kotaro Ishiyama | 2001-08-07 |