Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882246 | Method for supplementing replenisher for developer in automatic developing machine for presensitized plate | Hisao Ohba, Tomoaki Takekoshi | 1989-11-21 |
| 4880724 | Method for manufacture of lithographic printing plate with disposable developer with surfactant | Tadao Toyama, Hisao Ohba | 1989-11-14 |
| 4840875 | Desensitizing gum for lithographic printing plate comprising a polybasic and monoester of polysaccharide | Hiroshi Matsumoto, Akira Shingu | 1989-06-20 |
| 4841320 | Developing device for photosensitive material | Tomoaki Takekoshi, Hisao Ohba | 1989-06-20 |