Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11840948 | Silencer for an exhaust system of an internal combustion engine | Thomas Müller, Philipp Kratz, Benjamin Röhr, Nicolas Mettenleiter, Frank Berkemer | 2023-12-12 |
| 11643953 | Exhaust muffler for an exhaust system of an internal combustion engine | Nicolas Mettenleiter, Frank Berkemer | 2023-05-09 |
| 10167756 | Muffler for an exhaust system of an internal combustion engine | Michael Marquardt-Stammberger, Roland Schwarz, Mathias ROTHFUß, Martin Straehle, Benjamin Roehr | 2019-01-01 |
| 7874401 | Exhaust muffler for exhaust system | Peter Gorke | 2011-01-25 |
| 6180286 | Lead-acid cells and batteries | Purushothama Rao | 2001-01-30 |
| 5874186 | Lead-acid cells and batteries | Purushothama Rao | 1999-02-23 |
| 5691087 | Sealed lead-acid cells and batteries | Purushothama Rao | 1997-11-25 |
| 5569552 | Lead-acid battery having a fluid compartment for reducing convection-induced heat transfer | Purushothama Rao, William H. Kump | 1996-10-29 |
| 5460900 | Lead-acid battery having a fluid compartment for reducing convection-induced heat transfer | Purushothama Rao, William H. Kump | 1995-10-24 |
| 5434025 | Battery grids and plates and lead-acid batteries made using such grids and plates | Purushothama Rao, John G. Larson, Steven R. Larsen | 1995-07-18 |