Ishiyama; Kotaro
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ishiyama; Kotaro.The latest application filed is for "surface-hardened titanium material, surface hardening method of titanium material, watchcase decoration article, and decoration article".
- Ishiyama; Kotaro - Yono JP
| Patent | Date |
|---|---|
| Surface-hardened titanium material, surface hardening method of titanium material, watchcase decoration article, and decoration article Grant 6,270,914 - Ogasawara , et al. August 7, 2 | 2001-08-07 |
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