Granted Patent
Utility
US 4,353,994 · App. 06/330,572
Low-density, furfuryl benzylic phenolic thermosetting foam product and method of preparing same
Inventor:
Stuart B. Smith
Patented Case
View Patent ↗
Granted: Oct 12, 1982
Filed: Dec 14, 1981
Inventor
Stuart B. Smith
Assignee (at issue)
Thermoset 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.