Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5153388 | Sound insulating element having absorption properties for partition walls | Rainer Prutz | 1992-10-06 |
| 5000483 | Interior noise reduction in motor vehicles | Ehrenfried Blumel, Heinemann Gahlau, Manfred Hoffmann, Thomas Stankiewicz, Christoph Kittel | 1991-03-19 |
| 4663381 | Interior noise reduction in motor vehicles | Ehrenfried Blumel, Heinemann Gahlau, Manfred Hoffmann, Thomas Stankiewicz, Christoph Kittel | 1987-05-05 |
| 4655496 | Motor vehicle noise insulation | Heinemann Gahlau, Manfred Laubner, Herbert Baumeister | 1987-04-07 |
| 4574915 | Sound barriers | Heinemann Gahlau, Manfred Hoffmann | 1986-03-11 |