Granted Patent
Utility
US 6,582,490 · App. 09/935,847
Pre-form for exhaust aftertreatment control filter
Inventors:
Robert K. Miller, Z. Gerald Liu, William C. Haberkamp, Barry M. Verdegan, Murray R. Schukar, A. Caner Demirdogen
Patented Case
View Patent ↗
Granted: Jun 24, 2003
Filed: Aug 23, 2001
Inventors
Robert K. Miller
Z. Gerald Liu
William C. Haberkamp
Barry M. Verdegan
Murray R. Schukar
A. Caner Demirdogen
Assignee (at issue)
Fleetguard, Inc.
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.