Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D327618 | Portable electric drill | Yasuki Omori | 1992-07-07 |
| D323964 | Pneumatic nailer | Akira Uno, Isamu Tanji | 1992-02-18 |
| D314125 | Orbital sander | Kazumi Takeishi, Junji Nakagawa | 1991-01-29 |
| D309088 | Portable air nailer | Kunio Yamamoto | 1990-07-10 |
| 4938642 | Portable electric router | Toshiaki Imahashi, Kihachiro Matsumoto, Katsuhiko Muto | 1990-07-03 |
| D303346 | Cordless hand-held cutter | — | 1989-09-12 |
| D301830 | Electric grinder | Juro Kobayashi | 1989-06-27 |
| 4812839 | System for controlling network activation sequence | Sumie Okada, Takashi Nara, Takashi Hatano, Yutaka Kawato, Ryoji Shimozono +2 more | 1989-03-14 |
| 4766594 | Digital network system having arrangement for testing digital subscriber line | Kenji Tsutsumi, Yasuo Tanaka, Ryoji Shimozono | 1988-08-23 |
| 4754273 | System for controlling network activation sequence | Sumie Okada, Takashi Nara, Takashi Hatano, Yutaka Kawato, Ryoji Shimozono +2 more | 1988-06-28 |
| 4599583 | Mixed dual frequency generating system | Ryoji Shimozono, Yasuo Tanaka, Shigeo Sano | 1986-07-08 |