Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6451491 | Aqueous developable negative acting photosensitive composition having improved image contrast | Major S. Dhillon, Stanley F. Wanat | 2002-09-17 |
| 5834129 | Grained and anodized aluminum substrate for lithographic printing plates | Major S. Dhillon, Jose G. Gonzales | 1998-11-10 |
| 5728503 | Lithographic printing plates having specific grained and anodized aluminum substrate | Major S. Dhillon, Jose G. Gonzales | 1998-03-17 |
| 5432046 | Process for preparing improved lithographic printing plates by brushgraining with alumina/quartz slurry | Stanley F. Wanat, Major S. Dhillon, Allen W. Loveland, Dennis A. King | 1995-07-11 |
| 5009722 | Process for producing base material for an aluminum offset printing plate | Walter Niederstaetter, Kurt Reiss, Wolfgang von Asten, Gunther Scharf, Barbara Grzembra | 1991-04-23 |
| 4945004 | Base material for an aluminum offset printing plate | Walter Niederstaetter, Kurt Reiss, Wolfgang V. Asten, Gunther Scharf, Barbara Grzemba | 1990-07-31 |
| 4689272 | Process for a two-stage hydrophilizing post-treatment of aluminum oxide layers with aqueous solutions and use thereof in the manufacture of supports for offset printing plates | Ulrich Simon, Reiner Beutel | 1987-08-25 |
| 4655136 | Sheet material of mechanically and electrochemically roughened aluminum, as a support for offset-printing plates | Kurt Reiss, Walter Niederstatter, Joachim Stroszynski, Dieter Böhm | 1987-04-07 |
| 4605480 | Device for continuously anodically oxidizing aluminum strips on one surface thereof and use of these aluminum strips in the production of offset printing plates | Joachim Stroszynski, Walter Niederstatter | 1986-08-12 |
| 4566952 | Two-stage process for the production of anodically oxidized aluminum planar materials and use of these materials in manufacturing offset-printing plates | Walter Niderstatter, Joachim Stroszynski | 1986-01-28 |
| 4395480 | Developer mixture and process for developing exposed negative-working diazonium salt layers | — | 1983-07-26 |
| 4339530 | Developer mixture for developing exposed light-sensistive copying layers | Rudolf Neubauer, Gerhard Buhr | 1982-07-13 |
| 4288520 | Process of manufacturing light-sensitive copying material based on diazonium salt condensation products | Fritz Uhlig | 1981-09-08 |