Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8071792 | High-purity vinylene carbonate and a method of purifying vinylene carbonate | Reinhard Langer, Heinrich Grzinia | 2011-12-06 |
| 8024996 | Power wrench | Bernd Thelen, Andreas Niemietz, Klaus Russmann | 2011-09-27 |
| 7999122 | Method of purifying vinylene carbonate | Reinhard Langer, Heinrich Grzinia | 2011-08-16 |