Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871649 | Optical recording medium and optical recording method using the same | Hiroyuki Imataki, Mizuho Hiraoka, Sachiko Ichikawa, Hitoshi Yoshino | 1989-10-03 |
| 4806437 | Vibration isolating mount | Hiroshi Yokoi, Hideyuki Imai | 1989-02-21 |