Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5965645 | Plastisol composition | Michael Beck, Wolfgang Ritter | 1999-10-12 |
| 5919857 | Plastisol composition | Ingolf Scheffler | 1999-07-06 |
| 5756555 | Acoustically active plastisols | Karl Wesch | 1998-05-26 |
| 5741824 | Acoustically active plastisols | Gunter Butschbacher, Manfred Rein, Karl Wesch | 1998-04-21 |
| 5668209 | Plastisol composition | Ingolf Scheffler | 1997-09-16 |
| 5088576 | Mass and spring systems for soundproofing | Hans-Hermann Potthoff, Ingolf Scheffler, Rainer Joesel | 1992-02-18 |