Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883698 | Multilayer film containing a biaxially oriented polypropylene film | Lothar Bothe, Guenther Crass, Siegfried Janocha | 1989-11-28 |
| 4863032 | Packaging wrapper for disk-shaped magnetic information carriers | Lothar Bothe, Guenther Crass | 1989-09-05 |
| 4842187 | Opaque film for candy twist wrapping | Siegfried Janocha, Guenther Crass, Lothar Bothe | 1989-06-27 |
| 4803027 | Process for the production of biaxially stretched films and apparatus for implementation of the process | Herbert Peiffer, Guenther Crass, Wolfgang Dietz | 1989-02-07 |