Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863835 | Developer composition for lithographic printing plates | Shigeki Shimizu, Hiroshi Ide, Noriaki Takahashi | 1989-09-05 |
| 4421841 | Photosensitive lithographic plate with sulfonate containing photosensitive polyester | Shigeki Shimizu | 1983-12-20 |
| 4267260 | Developer for lithographic printing plate | Konoe Miura, Chihiro Eguchi, Yoshihiro Takahashi, Kazuo Torige, Shinichi Bunya | 1981-05-12 |
| 4258124 | Photosensitive composition | Shigeki Shimizu | 1981-03-24 |