Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8087903 | Hydraulic rotary machine | Yoshinori Takeuchi, Haruo Kokubun | 2012-01-03 |
| 6152570 | Surface light source device | — | 2000-11-28 |
| 6022247 | Electric wiring block | Shinichi Akiyama, Hidetoshi Sato, Takeshi Ohba, Tsutomu Ishimaru | 2000-02-08 |
| 5988826 | Surface light source device | — | 1999-11-23 |
| 5971559 | Surface light source device | Tsuyoshi Ishikawa, Kayoko Watai | 1999-10-26 |
| 5899552 | Surface light source device | Takayuki Arai, Yasuhiro Koike | 1999-05-04 |
| 5823819 | Electric junction box | Kazuharu Kondo, Tohru Yamaguchi | 1998-10-20 |
| 5818555 | Surface light source device | Tsuyoshi Ishikawa, Takayuki Arai, Tetsufumi Ohta | 1998-10-06 |
| 5810464 | Surface light source device of side light type | Tsuyoshi Ishikawa, Kayoko Watai | 1998-09-22 |
| 5779338 | Surface light source device | Tsuyoshi Ishikawa, Kayoko Watai | 1998-07-14 |
| 5769522 | Surface light source device | Isamu Kaneko, Hideaki Katoh, Tsuyoshi Ishikawa | 1998-06-23 |
| 5718497 | Surface light source device | Tsuyoshi Ishikawa | 1998-02-17 |
| 5655827 | Surface light source device | Isamu Kaneko, Hideaki Katoh, Tsuyoshi Ishikawa | 1997-08-12 |
| 5600455 | Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface | Tsuyoshi Ishikawa, Kayoko Watai | 1997-02-04 |
| 5584556 | Surface light source device | Tsuyoshi Ishikawa | 1996-12-17 |
| 5575549 | Surface light source device | Tsuyoshi Ishikawa, Kayoko Watai | 1996-11-19 |
| 5569882 | Waterproof protective cover | Michitaka Kinoshita, Yukio Ohashi, Yasuhiro Suzuki | 1996-10-29 |
| 5450292 | Surface light source device | Tsuyoshi Ishikawa | 1995-09-12 |
| 5414599 | Surface light source device | Isamu Kaneko, Hideaki Katoh, Tsuyoshi Ishikawa | 1995-05-09 |
| 5402324 | Surface illuminant device | Tsuyoshi Ishikawa, Kayoko Watai | 1995-03-28 |
| 5196215 | Cavity forming agent for edible foods | Kiyomi Taniguchi, Hisao Sekiguchi, Tomiatsu Kaneko | 1993-03-23 |
| 5192568 | Cavity forming agent for edible foods | Kiyomi Taniguchi, Hisao Sekiguchi, Tomiatsu Kaneko | 1993-03-09 |
| 5134549 | Surface light source device | — | 1992-07-28 |
| 4798733 | Yeast-fermented food modifier | Tomiatsu Kaneko, Hisashi Tsuruoka | 1989-01-17 |