Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5907534 | Optical recording medium | — | 1999-05-25 |
| 5818805 | Reproducing apparatus using an information recording medium wherein multi-bit digital information is represented by a shift amount of a pit edge | Seiji Kobayashi, Hiroshige Okamura, Toshiyuki Kashiwagi | 1998-10-06 |
| 5809004 | Information recording medium with pits edges shifted in a step-wise fashion | Seiji Kobayashi, Hiroshige Okamura | 1998-09-15 |
| 5748582 | Information recording medium wherein digital symbols are represented by discrete shift amounts of a pit edge and tracking wobbling pits are shared between adjacent tracks and information recording and reproducing apparatus therefor | Seiji Kobayashi, Hiroshige Okamura, Toshiyuki Kashiwagi | 1998-05-05 |
| 5724330 | Information recording medium wherein multi-bit digital information is represented by a shift amount of a pit edge, recording apparatus, reproducing apparatus, and recording and reproducing apparatus therefor | Seiji Kobayashi, Hiroshige Okamura, Toshiyuki Kashiwagi | 1998-03-03 |
| 5717676 | Apparatus for recording on master optical disc | Yushi Kaneda | 1998-02-10 |
| 5615193 | Information recording apparatus and process for recording on a recording medium with pit edges shifted in a step-wise fashion | Seiji Kobayashi, Hiroshige Okamura | 1997-03-25 |
| 5566158 | Information recording medium and a recording apparatus and a reproducing apparatus therefor | Seiji Kobayashi, Hiroshige Okamura | 1996-10-15 |
| 5557592 | Reproducing apparatus for reproducing information from a recording medium with pit edges shifted in a step-wise fashion | Selji Kobayashi, Hiroshige Okamura | 1996-09-17 |