Issued Patents 1982
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4347304 | Process for forming metallic image | Hideki Sakurai, Mitsuo Nakatani, Hitoshi Oka, Tokio Isogai | 1982-08-31 |
| 4342842 | Process for producing rigid polyurethane foam | Yasuo Hira, Susumu Tsuzuku, Masao Gotoh, Hiroshi Kaneko, Yoshihisa Hosoe | 1982-08-03 |
| 4324629 | Process for regenerating chemical copper plating solution | Hitoshi Oka, Hiroshi Kikuchi, Haruo Suzuki, Toyofusa Yoshimura, Akira Matsuo +3 more | 1982-04-13 |
| 4321319 | Photosensitive compositions containing polyamides acid with photosensitive groups | Fusaji Shoji, Issei Takemoto, Tokio Isogai | 1982-03-23 |
| 4310563 | Method for automatically controlling composition of chemical copper plating solution | Hitoshi Oka, Kenji Nakamura, Tokio Isogai, Akira Matsuo, Osamu Miyazawa +1 more | 1982-01-12 |