Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5215235 | Watch band | Yasuo Maekawa, Takashi Masuda, Tomomi Murakami, Takayuki Takahashi | 1993-06-01 |
| 4544288 | Impact dot printing head | Hirofumi Suzuki, Kunimitsu Harada | 1985-10-01 |
| 4496248 | Structure for a watch case made of cemented carbide | Seiji Umezawa, Tsuneji Takasugi, Hiroshi Koide, Takao Kasai | 1985-01-29 |
| 4397568 | Timepiece push-button structure | Hisao Yamagata, Toshio Murata, Fumio Takeuchi, Masataka Matsumoto | 1983-08-09 |
| 4391533 | Back cover fixing structure for wristwatch | — | 1983-07-05 |
| 4313187 | Water resisting crown structure for electronic wristwatches | Yasuo Maekawa | 1982-01-26 |
| 4234948 | Watchglass fixing structure | Yasuo Maekawa, Tsunetoshi Sekiguchi, Hiroshi Koide, Kisuke Watanabe, Osamu Matsumura +1 more | 1980-11-18 |
| 4223527 | Retaining spring for a wristwatch case | Hidetaka Tutiya | 1980-09-23 |