Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6218574 | Process for purifying long-chain dicarboxylic acid | Dacheng Gao, Jiangang Zhang | 2001-04-17 |
| 5824448 | Negative working diazo color proofing sheet with adhesive layer having reduced tackiness | Robert J. von Trebra | 1998-10-20 |
| 5738970 | Negative working, peel developable, single sheet color proofing system with polyvinyl acetal photoadhering layer | Shane Hsieh, Rusty Koenigkramer, Richard L. Shadrach, David L. Siegfried, Wojciech A. Wilczak | 1998-04-14 |
| 5246818 | Developer composition for positive working color proofing films | — | 1993-09-21 |
| 4692397 | Process for developing an aqueous alkaline development diazo photographic element | — | 1987-09-08 |
| 4618562 | Aqueous developable lithographic printing plates containing an admixture of diazonium salts and polymers and composition therefor | John E. Walls | 1986-10-21 |
| 4511640 | Aqueous developable diazo lithographic printing plates with admixture of polyvinyl acetate and styrene maleic acid ester copolymer | — | 1985-04-16 |
| 4486529 | Dialo printing plate made from laser | William Jeffers, Douglas A. Seeley, Raimund J. Faust | 1984-12-04 |
| 4299906 | Light-sensitive color proofing film with surfactant in a light-sensitive coating | — | 1981-11-10 |
| 4248959 | Preparation of diazo printing plates using laser exposure | William Jeffers, Douglas A. Seeley, Raimund J. Faust | 1981-02-03 |