Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6527904 | Method of producing an optical video disc | Haruhisa Maruyama, Masayuki Uno, Hirotoshi Tabuchi, Jiro Fujimori | 2003-03-04 |
| 6312547 | Method for manufacturing optical disks | Jiro Fujimori, Haruhisa Maruyama | 2001-11-06 |
| 6136133 | Method of producing optical disc of bonded type | Haruhisa Maruyama, Jiro Fujimori | 2000-10-24 |
| 6132545 | Method of producing an optical video disc | Haruhisa Maruyama | 2000-10-17 |
| 5827593 | Disc substrate used for an optical disc and a molding die for molding the same | Haruhisa Maruyama, Shinichi Hanzawa | 1998-10-27 |
| 5820961 | Laminated optical discs | Haruhisa Maruyama, Shinichi Hanzawa | 1998-10-13 |
| 5759332 | Process of reproducing optical discs and optical discs produced by the same | Masahide Itoigawa, Mitsuhiko Sasano, Shinichi Hanzawa, Yoshikazu Hirai, Haruhisa Maruyama | 1998-06-02 |