Granted Patent
Utility
US 6,774,071 · App. 10/117,912
Foamed facer and insulation boards made therefrom
Inventors:
Charles J. Horner, Jr., William K. Longcor, IV, Lorin J. Lichten
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Apr 8, 2002
Inventors
Charles J. Horner, Jr.
William K. Longcor, IV
Lorin J. Lichten
Assignee (at issue)
BUILDING MATERIALS INVESTMENT 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.