Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876042 | Molding processing using a reproducible molding die | Mizuho Hiraoka, Tomoyuki Tamura, Tetsuya Satoh | 1989-10-24 |
| 4871649 | Optical recording medium and optical recording method using the same | Mizuho Hiraoka, Sachiko Ichikawa, Yoshihiro Ogawa, Hitoshi Yoshino | 1989-10-03 |