Granted Patent
Utility
US 6,214,078 · App. 09/273,990
High temperature ceramic filter
Inventors:
Philip S. Way, Thomas J. Vlach, Michael J. Bulley
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Mar 22, 1999
Inventors
Philip S. Way
Thomas J. Vlach
Michael J. Bulley
Assignee (at issue)
Ferro Corporation
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.