Granted Patent
Utility
US 4,313,764 · App. 06/174,047
Isocyanate polyoxyalkylenes
Inventors:
David J. Tracy, Lindley S. Wood, Paritosh M. Chakrabarti
Patented Case
View Patent ↗
Granted: Feb 2, 1982
Filed: Jul 31, 1980
Inventors
David J. Tracy
Lindley S. Wood
Paritosh M. Chakrabarti
Assignee (at issue)
GAF 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.