Granted Patent
Utility
US 6,274,640 · App. 09/640,951
Extruded foam product with 134a and alcohol blowing agent
Inventors:
Larry M. Miller, Raymond M. Breindel, Mitchell Z. Weekley, Thomas Cisar, Kerry Jerome Prince
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: Aug 17, 2000
Inventors
Larry M. Miller
Raymond M. Breindel
Mitchell Z. Weekley
Thomas Cisar
Kerry Jerome Prince
Assignee (at issue)
Owens-Corning Fiberglas Technology, 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.