Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6465078 | Recording sheet with an ink absorbing layer | Ken Kawai, Kiyoharu Mizumoto, Takaaki Fujiwa, Kiyotaka Inokami | 2002-10-15 |
| 5173347 | Polycarbonate and optical disk therefrom | Tatsuya Kanno, Tsunehisa Katsuki, Ikuo Takahashi, Kenichi Sasaki | 1992-12-22 |
| 4986938 | Process for producing plastic substrate for optical disks | Yoshio Onizawa, Mitsuru Yamashita | 1991-01-22 |
| 4841501 | Plastic substrate for optical disk and process for producing the same | Yoshio Onizawa, Mitsuru Yamashita | 1989-06-20 |