Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4703020 | Process for the production of jewelling and ornamental material | Yuji Nakano, Kazushi Kamiyama | 1987-10-27 |
| 4608307 | Jewelling and ornamental material and process for production thereof | Yuji Nakano, Kazushi Kamiyama | 1986-08-26 |
| 4267128 | Variable venturi type carburetor | Nobuo Yamada | 1981-05-12 |