Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5849593 | Method for metering a reagent into a flowing medium | — | 1998-12-15 |
| 5833932 | Catalytic converter for nitrogen oxide reduction in the exhaust gas of an internal combustion engine | — | 1998-11-10 |
| 5643536 | Method and apparatus for metering a reagent into a flowing medium | — | 1997-07-01 |
| 5628186 | Method and apparatus for controlled introduction of a reducing agent into a nitrogen oxide-containing exhaust gas | — | 1997-05-13 |
| 5546004 | Sensor for determining the course of concentration of an adsorbent substance | — | 1996-08-13 |
| 5394610 | Catalytic converter and method for producing the same | Rainer Stoephasius, Wieland Mathes, Ronald Neufert, Jurgen Zurbig | 1995-03-07 |
| 5225390 | Catalyst for reducing nitrogen oxides | Doris Vogel, Norbert Landgraf, Josef Sprehe, Wolfgang Gajewski, Dietmar Hein | 1993-07-06 |
| 5045516 | Process for producing a catalyst for reducing nitrogen oxides in flue gases | Doris Vogel, Norbert Landgraf, Josef Sprehe, Wolfgang Gajewski, Dietmar Hein | 1991-09-03 |
| 4849392 | Catalyst material for reducing the nitrogen oxides in flue gases | Erich Hums, Dietmar Hein | 1989-07-18 |
| 4812296 | Process utilizing catalytic material for the reduction of nitrous oxides | Helmut Thomann, Renate Kuschke, Eva-Helga Wilbert, Wolfgang Gajewski, Josef Sprehe +5 more | 1989-03-14 |
| 4425556 | Ceramic cold conductor and method of producing the same | Leopold Hanke | 1984-01-10 |
| 4407858 | Method for producing films of sintered polycrystalline silicon | Leopold Hanke, Hans-Martin Hellebrand | 1983-10-04 |
| 4361529 | Method for producing plate or tape shaped silicon crystal bodies having crystalline pillar-like structures, equivalent to columnar structures, for large surface solar cells | Leopold Hanke | 1982-11-30 |
| 4192840 | Method for producing a capacitor dielectric with inner blocking layers | Werner Schwaen | 1980-03-11 |