Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808437 | Method for producing magnetic recording medium | Akira Kisoda, Hiroshi Suzuki, Tomiharu Hosaka | 1989-02-28 |
MH
Masanaru Hasegawa
Overall (1989): #81,332 of 140,708Top 60%
1
Patents 1989