Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835069 | Magnetic recording medium | Takeshi Sawada, Hiroshi Takagi, Kenji Suzuki, Fumio Kishi, Susumu Kozuki | 1989-05-30 |
AS
Akira Shinmi
Tohoku Steel Co.: 1 patents #1 of 11Top 10%
Overall (1989): #134,394 of 140,708Top 100%
1
Patents 1989