Granted Patent
Utility
US 4,374,207 · App. 06/200,128
Intumescent flexible polyurethane foam
Inventors:
Herman Stone, Peter D. Pauly, Michael P. Pcolinsky, Jr.
Patented Case
View Patent ↗
Granted: Feb 15, 1983
Filed: Oct 24, 1980
Inventors
Herman Stone
Peter D. Pauly
Michael P. Pcolinsky, Jr.
Assignee (at issue)
G.F.C. Foam 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.