Granted Patent
Utility
US 4,751,024 · App. 06/849,232
Sprayable fireproofing composition
Inventors:
Larry S. Shu, Walter R. Payment
Patented Case
View Patent ↗
Granted: Jun 14, 1988
Filed: Apr 7, 1986
Inventors
Larry S. Shu
Walter R. Payment
Assignee (at issue)
W. R. Grace & Co.
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.