Issued Patents All Time
Showing 1–25 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12180135 | Process for the continuous production of nitrobenzene | Murat Kalem, Christian Drumm, Alexandre Racoes | 2024-12-31 |
| 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, Dirk Manzel, Peter Plathen | 2022-06-21 |
| 11136285 | Process for producing nitrobenzene | Peter Drinda | 2021-10-05 |
| 10947187 | Method for producing methylene-diphenylene-diisocyanates and polymethylene-polyphenylene-polyisocyanates | Peter Plathen, Dirk Manzel, Stefan Wershofen | 2021-03-16 |
| 10875827 | Process for preparing an isocyanate by partly adiabatic phosgenation of the corresponding amine | Juergen Spriewald, Anke Hielscher, Volker Michele, Dietmar Wastian, Christian Steffens | 2020-12-29 |
| 10851048 | Process for preparing an isocyanate by partly adiabatically operated phosgenation of the corresponding amine | Christian Steffens, Anke Hielscher, Dietmar Wastian, Juergen Spriewald | 2020-12-01 |
| 10815189 | Method for producing nitrobenzene | Denise Chan, Juergen Muennig | 2020-10-27 |
| 10689323 | Process for preparation of di- and polyamines of the diphenylmethane series | Stefan Wershofen, Klaus-Gerd Gruner, Volker Hartjes | 2020-06-23 |
| 10689322 | Process for preparation of di- and polyamines of the diphenylmethane series | Stefan Wershofen, Klaus-Gerd Gruner, Volker Hartjes | 2020-06-23 |
| 10640455 | Method of producing diamines and polyamines of the diphenylmethane series | Stefan Wershofen, Klaus-Gerd Gruner, Volker Hartjes | 2020-05-05 |
| 10640453 | Method of producing diamines and polyamines of the diphenylmethane series | Stefan Wershofen, Klaus-Gerd Gruner, Volker Hartjes | 2020-05-05 |
| 10633327 | Method of producing diamines and polyamines of the diphenylmethane series at different production capacities | Stefan Wershofen, Klaus-Gerd Gruner, Volker Hartjes | 2020-04-28 |
| 10626078 | Method of producing diamines and polyamines of the diphenylmethane series at different production capacities | Stefan Wershofen, Klaus-Gerd Gruner, Volker Hartjes | 2020-04-21 |
| 10618871 | Process for producing isocyanate and at least one further chemical product in an integrated production | Jürgen Spriewald, Richard Adamson | 2020-04-14 |
| 10577311 | Method for producing isocyanates | Dirk Manzel, Peter Plathen, Jürgen Spriewald | 2020-03-03 |
| 10513487 | Methods for producing chemical products with operation interruptions | Peter Drinda, Stefan Wershofen, Klaus-Gerd Gruner, Volker Hartjes | 2019-12-24 |
| 10364214 | Method for producing isocyanates | Dirk Manzel, Peter Plathen, Jürgen Spriewald | 2019-07-30 |
| 10280135 | Method for producing isocyanates | Dirk Manzel, Peter Plathen, Stefan Wershofen | 2019-05-07 |
| 10125091 | Process for preparation of di- and polyamines of the diphenylmethane series | Stefan Wershofen, Klaus-Gerd Gruner, Volker Hartjes | 2018-11-13 |
| 10125090 | Process for preparation of di- and polyamines of the diphenylmethane series | Stefan Wershofen, Klaus-Gerd Gruner, Volker Hartjes | 2018-11-13 |
| 10023524 | Process for producing nitrobenzene | Peter Drinda | 2018-07-17 |
| 9896407 | Exhaust gas cleaning in a method for continuously producing dinitrotoluene | Jurgen Munnig, Wolfgang Lorenz, Bernd Pennemann | 2018-02-20 |
| 9845286 | Process for operating a gas phase phosgenation plant | Wolfgang Lorenz, Friedhelm Steffens, Rainer Bruns, Wolfgang Taube | 2017-12-19 |
| 9840461 | Method for operating a gas-phase phosgenation plant | Wolfgang Lorenz, Friedhelm Steffens, Rainer Bruns, Wolfgang Taube | 2017-12-12 |
| 9815703 | Method for starting up and shutting down a phosgene generator | Andreas Rausch, Dirk Manzel, Charles Bjoerndahl, Matthias Ehlers, Carlos Alvarez Herrero +1 more | 2017-11-14 |