Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5837425 | Method of preparing a lithographic printing plate using a developer containing a development stabilizer | Tadao Toyama, Hiroshi Matsumoto | 1998-11-17 |
| 5104484 | Method for manufacturing substrates for ps plates | Akira Nishioka, Yoshikatsu Kagawa, Nobuyoshi Kaneko | 1992-04-14 |
| 5061591 | Presensitized aluminum lithographic plate having thereon a positive or negative working light sensitive layer | Hirokazu Sakaki | 1991-10-29 |
| 4915800 | Process for electrolytically surface-roughening aluminum support | Hirokazu Sakaki | 1990-04-10 |
| 4833065 | Process for producing support for presensitized lithographic printing plate using alkaline electrolyte | Hirokazu Sakaki | 1989-05-23 |
| 4686021 | Lithographic support and process of preparing the same | Hisao Ohba, Hirokazu Sakaki | 1987-08-11 |
| 4678551 | Process for producing an aluminum support for a lithographic printing plate | Hirokazu Sakaki, Toru Yamazaki, Yoshio Okishi | 1987-07-07 |
| 4547274 | Support for lithographic printing plate and lithographic printing plate | Azusa Ohashi, Hirokazu Sakaki, Zenichi Tanabe, Shin Tsuchida, Yoshikatsu Hayashi | 1985-10-15 |