Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5250393 | Method for developing presensitized plate for use in making lithographic printing plate | Masanori Imai, Keiji Akiyama, Tadao Toyama | 1993-10-05 |
| 5112743 | Light-sensitive composition and presensitized plate for use in making lithographic printing plates | Akihiko Kamiya, Masanori Imai | 1992-05-12 |
| 5064741 | Positive working light-sensitive composition containing a free radical generator and a discoloring agent | Yukio Abe, Koichi Kawamura | 1991-11-12 |
| 5047309 | Photosensitive diazonium recording material with sulfur compound containing undercoat layer | Keiji Akiyama | 1991-09-10 |
| 4617250 | Light-sensitive diazo composition with acidic compounds for use with lithographic printing plates | Eiji Nakakita, Toshiyuki Sekiya, Hiroshi Misu, Nobuyuki Kita | 1986-10-14 |
| 4576893 | Presensitized lithographic printing plate precursor | Eiji Nakakita, Toshiyuki Sekiya, Hiroshi Misu, Nobuyuki Kita | 1986-03-18 |
| 4294905 | Light-sensitive lithographic printing plate and compositions therefore with multiple resins | Yoshio Okishi, Shizuo Miyano | 1981-10-13 |