Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870429 | Optical foam-spacer disk assembly | Tsutomu Fujita, Yoshiaki Togawa, Toshitsugu Kikuchi | 1989-09-26 |
| 4863829 | Positive type high gamma-value photoresist composition with novolak resin possessing | Akihiro Furuta, Makoto Hanabata, Osamu Hiroaki, Naoyoshi Jinno | 1989-09-05 |