Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6543178 | Intra-line fishing rod | Shunji Sunaga, Masaru Akiba, Tomoyoshi Tsurufuji, Yutaka Kurano, Toyoaki Takimoto +1 more | 2003-04-08 |
| 6408562 | Intra-line fishing rod | Shunji Sunaga, Masaru Akiba, Tomoyoshi Tsurufuji, Yutaka Kurano, Toyoaki Takimoto +1 more | 2002-06-25 |
| 6233862 | Interline fishing rod | Tomoyoshi Tsurufuji, Eiji Sugaya, Hiroshi Hashimoto, Masaru Akiba, Futoshi Nishikawa +2 more | 2001-05-22 |
| 6108959 | Interline fishing rod | Tomoyoshi Tsurufuji, Eiji Sugaya, Hiroshi Hashimoto, Masaru Akiba, Futoshi Nishikawa +2 more | 2000-08-29 |