Inventor
SCHMELZ HELMUT
DE18 patents
Patents
18 patentsUS5628186AMay 13, 1997
Method and apparatus for controlled introduction of a reducing agent into a nitrogen oxide-containing exhaust gas
SIEMENS AG291 citations98
US5643536AJul 1, 1997
Method and apparatus for metering a reagent into a flowing medium
SIEMENS AG109 citations97
US5833932ANov 10, 1998
Catalytic converter for nitrogen oxide reduction in the exhaust gas of an internal combustion engine
SIEMENS AG70 citations96
US5849593ADec 15, 1998
Method for metering a reagent into a flowing medium
SIEMENS AG29 citations92
US5546004AAug 13, 1996
Sensor for determining the course of concentration of an adsorbent substance
SIEMENS AG38 citations92
US4812296AMar 14, 1989
Process utilizing catalytic material for the reduction of nitrous oxides
SIEMENS AG70 citations91
US4407858AOct 4, 1983
Method for producing films of sintered polycrystalline silicon
SIEMENS AG34 citations90
US5394610AMar 7, 1995
Catalytic converter and method for producing the same
SIEMENS AG25 citations89
US5225390AJul 6, 1993
Catalyst for reducing nitrogen oxides
SIEMENS AG24 citations89
US5045516ASep 3, 1991
Process for producing a catalyst for reducing nitrogen oxides in flue gases
SIEMENS AG36 citations89
US4849392AJul 18, 1989
Catalyst material for reducing the nitrogen oxides in flue gases
SIEMENS AG21 citations81
US4054532AOct 18, 1977
Ceramic dielectric material
SIEMENS AG21 citations79
US3996168ADec 7, 1976
Ceramic electrical resistor
SIEMENS AG24 citations78
US4425556AJan 10, 1984
Ceramic cold conductor and method of producing the same
SIEMENS AG7 citations71
US4192840AMar 11, 1980
Method for producing a capacitor dielectric with inner blocking layers
SIEMENS AG7 citations70
US4149173AApr 10, 1979
Capacitor dielectric with internal barrier layers and a method for its production
SIEMENS AG15 citations70
US4131903ADec 26, 1978
Capacitor dielectric with inner blocking layers and method for producing the same
SIEMENS AG10 citations70
US4361529ANov 30, 1982
Method for producing plate or tape shaped silicon crystal bodies having crystalline pillar-like structures, equivalent to columnar structures, for large surface solar cells
SIEMENS AG0 citations39