Granted Patent
Utility
US 4,487,816 · App. 06/568,037
Sprayable, modified polyisocyanurate composition and articles therefrom
Inventor:
Stuart B. Smith
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Jan 4, 1984
Inventor
Stuart B. Smith
Assignee (at issue)
Thermocell Development, Ltd.
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.