Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5885375 | High strength titanium alloy, product made of the titanium alloy and method for producing the product | Atsushi Takemura, Norio Hashimoto, Tadao Enomoto, Hideo Taguchi | 1999-03-23 |
| 5091224 | Method of preparation of a surface-coated metal-made ornamental article | Kazumi Hamano, Yoshitsugu Imazawa, Kenji Irie | 1992-02-25 |
| 4640625 | External member for a watch | — | 1987-02-03 |
| 4507184 | Method for finishing matted surface on a metal-made article for personal ornament | Toshio Murata, Kenji Irie | 1985-03-26 |
| 4375391 | Method for manufacturing bicolored polyhedral body of aluminum | Tsuneji Takasugi, Kenji Irie | 1983-03-01 |