Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5155154 | Polyvinyl chloride-free plastisol and its use | Karl-Heinz Krummel, Ernst Lohmar | 1992-10-13 |
| 5000483 | Interior noise reduction in motor vehicles | Ehrenfried Blumel, Heinemann Gahlau, Manfred Hoffmann, Klaus Wittenmayer, Christoph Kittel | 1991-03-19 |
| 4663381 | Interior noise reduction in motor vehicles | Ehrenfried Blumel, Heinemann Gahlau, Manfred Hoffmann, Klaus Wittenmayer, Christoph Kittel | 1987-05-05 |