Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871649 | Optical recording medium and optical recording method using the same | Hiroyuki Imataki, Mizuho Hiraoka, Yoshihiro Ogawa, Hitoshi Yoshino | 1989-10-03 |
SI
Sachiko Ichikawa
Overall (1989): #59,416 of 140,708Top 45%
1
Patents 1989