Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876872 | Method and apparatus for manufacturing curved pipe | — | 1989-10-31 |
| 4875353 | Method and apparatus for manufacturing curved pipe | — | 1989-10-24 |
| 4873940 | Image developing device | Toyoji Ishikawa, Shuichi Endo, Yoshihiro Ogata, Toshihiko Takaya | 1989-10-17 |
| 4853362 | Heat-sensitive recording sheet | Toshimi Satake, Tadakazu Fukuchi, Toshiaki Minami, Tomoaki Nagai, Fumio Fujimura | 1989-08-01 |