Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5498359 | Lubricant | Sayaka Shinomoto, Kenji Kohno, Yuko Uetani, Kazushi Miyata | 1996-03-12 |
| 5073449 | Magnetic recording medium and method for producing the same | Hideaki Niimi, Kunio Wakai, Tetsuo Mizumura | 1991-12-17 |
| 5000984 | Method of making a magnetic recording medium | Kunio Wakai, Hideaki Niimi | 1991-03-19 |
| 4933797 | Arrangement for preventing entrance of harmful particles for use in a cartridge | Hikaru Mizutani, Kunio Wakai, Hideo Fujiwara, Hideaki Niimi, Toshio Doi | 1990-06-12 |
| 4855175 | Magnetic recording medium and production thereof | Kunio Wakai, Hideaki Niimi | 1989-08-08 |
| 4826739 | Magnetic recording medium | Tetsuo Mizumura, Kunio Wakai | 1989-05-02 |