Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5158859 | Optical recording medium | Hiroyuki Imatake, Mizuho Hiraoka, Yoshihiro Ogawa, Hitoshi Yoshino, Seijiro Kato | 1992-10-27 |
| 5026623 | Optical recording medium | Hiroyuki Imataki, Mizuho Hiraoka, Yoshihiro Ogawa, Hitoshi Yoshino, Seijiro Kato | 1991-06-25 |
| 4965153 | Optical recording medium | Hiroyuki Imataki, Mizuho Hiraoka, Hitoshi Yoshino, Yoshihiro Ogawa | 1990-10-23 |
| 4871649 | Optical recording medium and optical recording method using the same | Hiroyuki Imataki, Mizuho Hiraoka, Yoshihiro Ogawa, Hitoshi Yoshino | 1989-10-03 |