Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6451491 | Aqueous developable negative acting photosensitive composition having improved image contrast | Stanley F. Wanat, Gerhard Sprintschnik | 2002-09-17 |
| 5834129 | Grained and anodized aluminum substrate for lithographic printing plates | Gerhard Sprintschnik, Jose G. Gonzales | 1998-11-10 |
| 5728503 | Lithographic printing plates having specific grained and anodized aluminum substrate | Gerhard Sprintschnik, Jose G. Gonzales | 1998-03-17 |
| 5691288 | Finisher-preserver-cleaner composition for lithographic printing plates | — | 1997-11-25 |
| 5432046 | Process for preparing improved lithographic printing plates by brushgraining with alumina/quartz slurry | Stanley F. Wanat, Gerhard Sprintschnik, Allen W. Loveland, Dennis A. King | 1995-07-11 |
| 5120772 | Radiation-polymerizable composition and element containing a photopolymerizable mixture | John E. Walls, Carlos Tellechea | 1992-06-09 |
| 5081003 | Developer compositions for newspaper plates | — | 1992-01-14 |
| 4927737 | Radiation polymerizable composition and element containing a photopolymerizable acrylic monomer | John E. Walls, Carlos Tellechea | 1990-05-22 |
| 4914000 | Three dimensional reproduction material diazonium condensates and use in light sensitive | — | 1990-04-03 |
| 4912021 | Developer-finisher compositions for lithographic plates | Shane Hsieh, Douglas A. Seeley | 1990-03-27 |
| 4880555 | Enzyme hydrolyzed maltodextrin containing finisher/preserver/cleaner composition for lithographic printing plates | John E. Walls | 1989-11-14 |
| 4873174 | Method of using developer-finisher compositions for lithographic plates | Shane Hsieh, Douglas A. Seeley | 1989-10-10 |
| 4822723 | Developer compositions for heavy-duty lithographic printing plates | — | 1989-04-18 |
| 4780392 | Radiation-polymerizable composition and element containing a photopolymerizable acrylic monomer | John E. Walls, Carlos Tellechea | 1988-10-25 |
| 4729935 | Process for the production of photographic images utilizing a negative working diazo contact film | John E. Walls | 1988-03-08 |
| 4707437 | Radiation-polymerizable composition and element containing a photopolymer composition | John E. Walls, Carlos Tellechea | 1987-11-17 |
| 4670507 | Resin | John E. Walls, Gabor I. Koletar | 1987-06-02 |
| 4665124 | Resin | John E. Walls, Gabor I. Koletar | 1987-05-12 |
| 4652604 | Radiation-polymerizable composition and element containing a photopolymer composition | John E. Walls, Carlos Tellechea | 1987-03-24 |
| 4554236 | Amino acid stabilizers for water soluble diazonium compound condensation products | Trisha Bentley, John E. Walls | 1985-11-19 |
| 4533619 | Acid stabilizers for diazonium compound condensation products | John E. Walls, Trisha Bentley | 1985-08-06 |
| 4504406 | Cleansing agent for printing plates | — | 1985-03-12 |
| 4452877 | Electrolysis treatment of light sensitive diazo coated supports | — | 1984-06-05 |
| 4448873 | Negative working diazo contact film | John E. Walls | 1984-05-15 |
| 4446218 | Sulfur and/or amide-containing exposure accelerators for light-sensitive coatings with diazonium compounds | — | 1984-05-01 |