Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10199967 | Motor controller, motor driving apparatus, motor driving system, image forming apparatus, and conveying device | Norihiro Yamamoto, Haruyuki Suzuki | 2019-02-05 |
| 9925798 | Optical scanning apparatus and image forming device | Naoto Watanabe, Toshiaki Tokita, Kohji Sakai, Nobuaki Kubo | 2018-03-27 |
| 9625711 | Optical scanning apparatus and image forming device | Naoto Watanabe, Toshiaki Tokita, Kohji Sakai, Nobuaki Kubo | 2017-04-18 |
| 8036610 | Wireless terminal and level measurement method | Takeshi Kawagishi, Tsutomu Itou, Yuki Idogawa, Atsushi Manabe | 2011-10-11 |
| 7653121 | Power level measuring device and a mobile station | Tadamitsu Hirai, Takashi Sasaki, Masashi Kitada, Hideyuki Araki, Daisaku Yamane | 2010-01-26 |
| 5513037 | Rear-projection screen and a rear projection image display employing the rear-projection screen | Takahiko Yoshida, Koji Hirata, Hiroki Yoshikawa, Isao Yoshizaki, Atsuo Osawa | 1996-04-30 |
| 5500747 | Ultra-wide angle liquid crystal projector system | Hideo Tanide, Shigeru Mori, Kiyoshi Wada, Isao Yoshizaki, Naoyuki Ogura | 1996-03-19 |
| 5485308 | Rear-projection type image display apparatus and rear-projection type screen | Koji Hirata, Takahiko Yoshida, Hiroki Yoshikawa, Atsuo Osawa, Yutaka Matuda | 1996-01-16 |
| 5400114 | Rear-projection screen and a rear projection image display employing the rear-projection screen | Takahiko Yoshida, Koji Hirata, Hiroki Yoshikawa, Isao Yoshizaki, Atsuo Osawa | 1995-03-21 |
| 5272540 | Temperature compensating lens system for projection television | Koji Hirata, Hiroki Yoshikawa, Tooru Numata, Kiyoshi Wada, Isao Yoshizaki +2 more | 1993-12-21 |
| 5255122 | Projection lens system for projection type television | Nobuhiro Konuma, Takahiko Yoshida, Hiroki Yoshikawa, Isao Yoshizaki | 1993-10-19 |
| 5200814 | Video projector with optical color balance | Koji Hirata, Hiroki Yoshikawa, Takahiko Yoshida, Tooru Numata, Kiyoshi Wada +2 more | 1993-04-06 |
| 5066099 | Rear projection screen and method of producing the same | Takahoko Yoshida, Hiroki Yoshikawa, Koji Hirata, Isao Yoshizaki, Masakuni Teratani +1 more | 1991-11-19 |
| 4948237 | Projection lens system | Koji Hirata, Kyohei Fukuda, Hiroki Yoshikawa, Shigeru Mori, Isao Yoshizaki +2 more | 1990-08-14 |