Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4734335 | Multilayer film formed of polyester and having a core layer suitable for thermoplastic embossing | — | 1988-03-29 |
| 4606976 | Substantially scratch-free polyester multilayer film | Hartmut Hensel | 1986-08-19 |
| 4560277 | Process and device for qualitative and quantitative measurement of irregularities and impurities on and in transparent or semitransparent flexible sheet materials | — | 1985-12-24 |