Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4976198 | Grain structure for lithographic printing plate supports | Hisao Ohba, Kazutaka Oda, Hirokazu Sakaki, Akira Shirai | 1990-12-11 |
| 4939044 | Aluminum alloy support for lithographic printing plate | Akira Shirai, Kazushige Takizawa, Shiro Terai, Shin Tsuchida, Yoshikatsu Hayashi | 1990-07-03 |
| 4634656 | Aluminum alloy, a support of lithographic printing plate and a lithographic printing plate using the same | Akira Shirai, Hirokazu Sakaki, Zenichi Tanabe, Shin Tsuchida, Yoshikatsu Hayashi | 1987-01-06 |
| 4547274 | Support for lithographic printing plate and lithographic printing plate | Hirokazu Sakaki, Haruo Nakanishi, Zenichi Tanabe, Shin Tsuchida, Yoshikatsu Hayashi | 1985-10-15 |
| 4537496 | Method of replenishing a developer for photosensitive plate | Hisao Ohba, Toshio Uchida, Nobuyuki Kita | 1985-08-27 |
| 4476006 | Supports for lithographic printing plates and process for producing the same | Hisao Ohba, Kazutaka Oda, Hirokazu Sakaki, Akira Shirai | 1984-10-09 |
| 4301229 | Electrolytically grained aluminum support for making a lithographic plate and presensitized lithographic printing plate | Hirokazu Sakaki, Akira Shirai | 1981-11-17 |
| 4294672 | Method for preparing a support for a lithographic printing plate | Hisao Ohba, Kazutaka Oda, Yukio Yabuta | 1981-10-13 |
| 4268611 | Contact photographic process for producing a planographic printing plate | Yoshio Okishi, Masaru Watanabe | 1981-05-19 |
| 4217407 | Light-sensitive O-quinone diazide containing copying material | Masaru Watanabe, Tadao Yoyama | 1980-08-12 |
| 4207106 | Positive working O-quinone diazide photocopying process with organic resin overlayer | Masaru Odawara, Tadao Yoyama | 1980-06-10 |
| 4197128 | Light-sensitive O-quinone diazide containing copying material | Masaru Watanabe, Tadao Yoyama | 1980-04-08 |