Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6575581 | Image projection method and image projector | — | 2003-06-10 |
| 5859834 | Optical disc with magnetic member in a recessed portion thereof and method for producing said optical disc | Kenji Takahashi, Tadao Yoshida, Kazuhiko Fujiie, Hirotoshi Fujisawa, Hiroshi Mukawa | 1999-01-12 |
| 5666347 | Optical disk and disk chucking mechanism | Tadao Yoshida | 1997-09-09 |
| 5537387 | Information storage disk with display data recorded in a lead-in region and an apparatus for recording and/reproducing the disc | Ryo Ando, Tadao Yoshida | 1996-07-16 |
| 5521900 | Disk having a lead-in region containing display data and an apparatus for recording and/or reproducing the disc | Ryo Ando, Tadao Yoshida | 1996-05-28 |
| 5467332 | Disc cleaning device | — | 1995-11-14 |
| 5345433 | Optical disc recording apparatus and optical disc reproducing apparatus | Norio Ohga | 1994-09-06 |
| 5317553 | Optical disc recording and/or reproducing apparatus having a buffer memory to accommodate track jumps | Norio Ohga, Tadao Yoshida | 1994-05-31 |
| 5299186 | Disc protecting cover | — | 1994-03-29 |
| 5244705 | Disc-shaped recording medium | Tadao Yoshida | 1993-09-14 |
| 5148418 | Disc recording apparatus | — | 1992-09-15 |
| 4519058 | Optical disc player | Tsuneo Furuya, Tadashi Fukami | 1985-05-21 |
| 4482988 | Objective lens mount and drive for optical disc player | Kenji Shintani | 1984-11-13 |
| 4473274 | Objective lens assembly for optical disc player | Hajime Yano | 1984-09-25 |