Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6421451 | Step difference detection apparatus and processing apparatus using the same | Masataka Shiratsuchi, Tutomu Saito, Kei Shimura | 2002-07-16 |
| 6344928 | Display device | Masataka Shiratsuchi, Yuzo Hisatake, Yoshinori Higuchi, Nozomu Harada | 2002-02-05 |
| 6264332 | Illumination apparatus and a projection type image display apparatus using it | Yuzuru Takashima, Hisayuki Mihara, Masaru Kitamura | 2001-07-24 |
| 6154433 | Light beam shaping device to change an anisotropic beam to an isotropic beam for reducing the size of an optical head | Isao Hoshino, Shoko Wachi, Masahiko Tanaka | 2000-11-28 |
| 6095656 | Backlighting apparatus and display apparatus using the same | Kei Shimura | 2000-08-01 |
| 5995303 | Optical element and optical device | Masataka Shiratsuchi | 1999-11-30 |
| 5959963 | Optical disk and optical disk apparatus | Toshihiro Sugaya | 1999-09-28 |
| 5776574 | Optical recording medium and optical recording/reproducing apparatus | Toyoki Taguchi, Hiroshi Hasegawa, Tadashi Kobayashi, Naoki Morishita, Naomasa Nakamura | 1998-07-07 |
| 5777981 | Optical disk with sectional trapezoidal pits and optical disk apparatus | Toshihiro Sugaya | 1998-07-07 |
| 5708651 | Optical disk having reduced track pitch and optical disk playback apparatus containing the same | Toshihiro Sugaya | 1998-01-13 |
| 5666339 | Optical information reproducing apparatus using transversal filter | — | 1997-09-09 |
| 5615200 | Light beam shaping device to change an anisotropic beam to an isotropic beam for reducing the size of an optical head | Isao Hoshino, Shoko Wachi, Masahiko Tanaka | 1997-03-25 |
| 5602825 | Optical disk and optical disk apparatus | Toshihiro Sugaya | 1997-02-11 |
| 5592464 | Optical disk and optical disk apparatus | Toshihiro Sugaya | 1997-01-07 |
| 5474826 | Optical recording medium and optical recording/reproducing apparatus | Toyoki Taguchi, Hiroshi Hasegawa, Tadashi Kobayashi, Naoki Morishita, Naomasa Nakamura | 1995-12-12 |
| 5459712 | Optical disk and optical disk apparatus where information is recorded having a specific track pitch and as a plurality of pit trains, each including a plurality of substantially trapezoidal pits | Toshihiro Sugaya | 1995-10-17 |
| 5431975 | Optical recording medium and optical recording/reproducing apparatus | Toyoki Taguchi, Hiroshi Hasegawa, Tadashi Kobayashi, Naoki Morishita, Naomasa Nakamura | 1995-07-11 |
| 5268887 | Optical recording medium having offset-compensating areas | Teruo Murakami | 1993-12-07 |
| 5243585 | Optical head including focusing error detecting system | Isao Hoshino | 1993-09-07 |