Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4492616 | Process for treating aluminum oxide layers and use in the manufacture of offset-printing plates | Engelbert Pliefke | 1985-01-08 |
| 4458005 | Polyvinylmethylphosphinic acid, process for its manufacture and use | Dieter Mohr, Walter Herwig, Werner Frass | 1984-07-03 |
| 4229266 | Process for anodically oxidizing aluminum and use of the material so prepared as a printing plate support | — | 1980-10-21 |
| 4211619 | Process for anodically oxidizing aluminum and use of the material so prepared as a printing plate support | — | 1980-07-08 |