Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8003225 | Decorative article having a white coating | Yukio Miya, Koichi Naoi, Yukio Tanokura | 2011-08-23 |
| 7771836 | Golden ornament and process for producing the same | Koichi Naoi, Yukio Miya, Osamu Tanaka, Masayoshi Ushikubo | 2010-08-10 |
| 7622198 | Decorative article having white coating and method for manufacture thereof | Yukio Miya, Koichi Naoi, Yukio Tanokura | 2009-11-24 |
| 6780527 | Decorative article having white film and production method therefor | Koichi Naoi, Akiyoshi Takagi, Yukio Miya, Kazumi Hamano | 2004-08-24 |