Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8686197 | Method for improving the color number of trimethylolpropane | Ulrich Notheis, Michael Friederich | 2014-04-01 |
| 8642816 | Method for isolating di-trimethylol propane | Gunter Rauchschwalbe, Ulrich Notheis, Michael Friederich, Carsten Hummelt, Christiane Oppenheimer-Stix +1 more | 2014-02-04 |
| 8003830 | Method for improving the color number of trimethylolpropane | Wolfgang Mägerlein, Ulrich Notheis, Michael Friederich, Heinrich Grizinia, Paul Wagner | 2011-08-23 |