Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11365172 | Production plant for producing a chemical product by reacting H-functional reactants with phosgene, and method for operating same with an interruption to production | Juergen Spriewald, Thomas Knauf, Dirk Manzel | 2022-06-21 |
| 11213867 | Method for cleaning phosgene conducting apparatus | Dirk Manzel, Peter Wolf, Udo Boegel | 2022-01-04 |
| 10947187 | Method for producing methylene-diphenylene-diisocyanates and polymethylene-polyphenylene-polyisocyanates | Thomas Knauf, Dirk Manzel, Stefan Wershofen | 2021-03-16 |
| 10577311 | Method for producing isocyanates | Thomas Knauf, Dirk Manzel, Jürgen Spriewald | 2020-03-03 |
| 10364214 | Method for producing isocyanates | Thomas Knauf, Dirk Manzel, Jürgen Spriewald | 2019-07-30 |
| 10280135 | Method for producing isocyanates | Thomas Knauf, Dirk Manzel, Stefan Wershofen | 2019-05-07 |
| 9796669 | Process for preparing isocyanates | Thomas Knauf, Andreas Rausch, Charles Bjoerndahl, Matthias Ehlers, Carlos Alvarez Herrero +1 more | 2017-10-24 |