Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887623 | Apparatus for removing particles from a flexible support | Tuyoshi Sugiyama, Hideo Takeda, Tsunehiko Sato | 1989-12-19 |
| 4874633 | Method of producing magnetic recording medium | Kazunori Komatsu, Tsunehiko Sato | 1989-10-17 |
| 4844370 | Method and device for winding magnetic tape using magnetic alignment | Masaaki Sakaguchi, Mitsunobu Usui, Keisuke Wakatsuki, Seiji Kiuchi | 1989-07-04 |
| 4844946 | Method for preparing a magnetic recording medium | Kazunori Komatsu, Tsunehiko Sato | 1989-07-04 |
| 4840818 | Method of making magnetic recording medium | Masaaki Utsui, Yasutami Nojiri | 1989-06-20 |
| 4796824 | Device for winding magnetic tape using magnetic alignment | Akira Takagi, Masaaki Sakaguchi | 1989-01-10 |