Granted Patent
Utility
US 4,361,613 · App. 06/303,899
Composite construction materials with improved fire resistance
Inventors:
Ben R. Bogner, Keith B. Bozer, William R. Dunlop, Robert H. Leitheiser
Patented Case
View Patent ↗
Granted: Nov 30, 1982
Filed: Sep 21, 1981
Inventors
Ben R. Bogner
Keith B. Bozer
William R. Dunlop
Robert H. Leitheiser
Assignee (at issue)
The Quaker Oats Company
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.