Granted Patent
Utility
US 6,823,727 · App. 10/229,663
DEVICE HAVING A SENSOR ARRANGEMENT FOR DETERMINING THE AMBIENT-AIR QUALITY AND AN ARRANGEMENT OF OZONE SENSORS UPSTREAM AND DOWNSTREAM OF A RADIATOR WHICH IS COATED WITH A CATALYST MATERIAL, AND METHOD FOR OPERATING A DEVICE OF THIS TYPE
Inventors:
Joerg Friedel, Hans-Peter Gottler, Anton Grabmaier
Patented Case
View Patent ↗
Granted: Nov 30, 2004
Filed: Aug 27, 2002
Inventors
Joerg Friedel
Hans-Peter Gottler
Anton Grabmaier
Assignee (at issue)
Siemens Aktiengesellschaft
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.