Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870258 | Page turning apparatus | Masataka Kawauchi, Kenichiro Takezawa, Jyunichi Matsuno, Kihachiro Tanaka, Shinobu Yoshida | 1989-09-26 |
| 4814425 | Novel alternate copolymers | Sunao Kyo, Katsumi Omura | 1989-03-21 |