Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11820653 | Method for oxidizing ammonia and system suitable therefor | Rolf Siefert, Klaus Ruthardt, Alberto Cremona, Edoardo Vogna | 2023-11-21 |
| 10899617 | Method for removing N2O and NOx from the nitric acid production process, and an installation suitable for same | Rolf Siefert, Jürgen Fuchs, Klaus Ruthardt, Michael Groves | 2021-01-26 |
| 10414654 | Method for oxidizing ammonia and system suitable therefor | Rolf Siefert, Klaus Ruthardt, Alberto Cremona, Edoardo Vogna | 2019-09-17 |
| 10071341 | Elimination of ammonia and lower alkanes and/or hydrogen from waste gas streams in industrial plants | Ivo Müller | 2018-09-11 |
| 10022669 | Process and apparatus for eliminating NOX and N2O | Michael Groves, Christian Perbandt, Rolf Siefert | 2018-07-17 |
| 9738521 | Method for removing N2O and NOx from the nitric acid production process, and an installation suitable for same | Rolf Siefert, Jürgen Fuchs, Klaus Ruthardt, Michael Groves | 2017-08-22 |
| 9266081 | Device and process for catalytic gas phase reactions and use thereof | Michael Groves, Jürgen Fuchs, Rainer Maurer, Rolf Siefert, Bernhard Hündgen | 2016-02-23 |
| 9238196 | Device and method for eliminating NOx and N2O | Rolf Siefert, Stefan Pinnow | 2016-01-19 |
| 9108175 | Device and method for catalytic gas phase reaction and the use thereof | Michael Groves, Jürgen Fuchs, Rainer Maurer, Rolf Siefert, Bernhard Hündgen | 2015-08-18 |
| 8871673 | Catalyst production method therefor and use thereof for decomposing N2O | Rolf Siefert, Frank Seifert, Frank Froehlich, Wolfgang Burckhardt | 2014-10-28 |
| 7906091 | Removal of laughing gas in nitric acid production | Rainer Maurer, Thomas Turek | 2011-03-15 |
| 7744839 | Method for reducing the nitrogen oxide concentration in gases | Rolf Siefert, Michael Groves | 2010-06-29 |
| 7485276 | Method for the removal of Nox and N2O from the tail gas in nitric acid production | Rainer Maurer, Thomas Turek, Markus Kögel | 2009-02-03 |
| 7462340 | Method and device for reducing the NOX and N2O of gases | Michael Groves, Rolf Siefert, Rainer Maurer | 2008-12-09 |
| 7393512 | Denitrification method | Michael Groves | 2008-07-01 |
| 7259121 | Method of reducing the N2O content of gases and selected catalysts | Joachim Motz, Carsten Gehlen | 2007-08-21 |
| 6890499 | Catalyst for decomposing N2O, its use and method for the production thereof | — | 2005-05-10 |