Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4659439 | Surface treatment of aluminum or aluminum alloys | Hiroshi Watanabe, Masao Abe, Masashi Mizusawa | 1987-04-21 |
| 4571376 | Color diffusion transfer photographic film unit with 1-M-(methyl or ethyl)phenyl-4-methyl-4-hydroxymethyl pyrazolidinones | Toru Harada, Shigeo Hirano, Shigeru Nakamura | 1986-02-18 |
| 4526671 | Surface treatment of aluminum or aluminum alloys | Hiroshi Watanabe, Masao Abe, Masashi Mizusawa | 1985-07-02 |
| 4304847 | Color image forming dye bleach process | Koichi Nakamura, Yukio Maekawa, Koichi Koyama, Shigeki Yokoyama | 1981-12-08 |
| 4242441 | Color image forming process | Shigeru Nakamura | 1980-12-30 |
| 4229522 | Method for forming color images | Shigeru Nakamura, Taku Nakamura, Shinji Sakaguchi, Takushi Miyazako, Masatoshi Sugiysma +1 more | 1980-10-21 |