Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842917 | Magnetic recording medium and process for producing the same | Tomoyuki Ohno, Yoshihiro Shiroishi, Sadao Hishiyama, Hiroyuki Suzuki, Shinya Matsuoka +5 more | 1989-06-27 |