Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883733 | Electrophotographic printing process using photochromic compound | Hiroshi Sugimura, Eiji Imada, Yoshimi Kojima | 1989-11-28 |
| 4859060 | Variable interferometric device and a process for the production of the same | Masayuki Katagiri, Masanori Watanabe, Kazutaka Uda, Masaya Hijikigawa, Yasuhiko Inami | 1989-08-22 |
| 4828876 | Production of photoelectric conversion film and contact type image sensor | Soji Ohhara, Satoshi Nishigaki, Ryusuke Kita | 1989-05-09 |
| 4824539 | Perpendicular magnetic recording medium | Tomohisa Komoda, Mamoru Ishizuka, Mitsuhiko Yoshikawa | 1989-04-25 |