Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5051974 | Optical head device having a light splitter with a diffraction grating structure | Kiyonobu Endo, Tetsuro Kuwayama, Hiroaki Hoshi, Hiroshi Osawa, Koyo Hasegawa +1 more | 1991-09-24 |
| 5035473 | Display apparatus | Tetsuro Kuwayama, Yoko Yoshinaga, Nobuo Kushibiki | 1991-07-30 |
| 5026618 | Photosensitive material and volume type phase hologram member formed therefrom | Nobuo Kushibiki, Yoko Yoshinaga, Tetsuro Kuwayama | 1991-06-25 |
| 4946533 | Method of preparing volume type hologram film | Nobuo Kushibiki, Yoko Yoshinaga, Tetsuro Kuwayama | 1990-08-07 |
| 4908285 | Hologram member | Nobuo Kushibiki, Yoko Yoshinaga, Tetsuro Kuwayama | 1990-03-13 |
| 4871411 | Method of preparing volume type hologram film | Nobuo Kushibiki, Yoko Yoshinaga, Tetsuro Kuwayama | 1989-10-03 |
| 4733065 | Optical head device with diffraction grating for separating a light beam incident on an optical recording medium from a light beam reflected therefrom | Hiroaki Hoshi, Kiyonobu Endo, Tetsuro Kuwayama, Hiroshi Osawa, Yasuo Nakamura | 1988-03-22 |