Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7353526 | Optical information storage apparatus and optical information storage system | — | 2008-04-01 |
| 7221626 | Magneto-optical head and magneto-optical storage device | Akihiko Yabuki, Shigeru Akema, Ayu Miyakawa | 2007-05-22 |
| 5861964 | Method of manufacturing light beam scanning apparatus and fixed hologram plate and rotatable hologram and light distributing apparatus | Shinya Hasegawa, Shigeo Kayashima, Satoshi Maeda, Shigetake Iwata, Fumio Yamagishi +2 more | 1999-01-19 |
| 5861989 | Light beam scanning apparatus | Shinya Hasegawa, Shigeo Kayashima, Satoshi Maeda, Shigetake Iwata, Fumio Yamagishi +2 more | 1999-01-19 |
| 5680253 | Light beam scanning apparatus comprising a first and second diffraction grating plate | Shinya Hasegawa, Shigeo Kayashima, Satoshi Maeda, Shigetake Iwata, Fumio Yamagishi +2 more | 1997-10-21 |
| 5539447 | Optical scanning unit and image forming apparatus using the same with rotating lever attached to a cover for light emission and prevention | Tomokazu Akuta, Yoji Houki, Takashi Maekawa, Akihiro Komuro, Yasuhiro Ite | 1996-07-23 |