Granted Patent
Utility
US 4,273,913 · App. 06/103,248
Isocyanate capped urethane-containing prepolymer prepared from polyols obtained from epihalohydrin
Inventors:
Louis L. Wood, Donald W. Larsen
Patented Case
View Patent ↗
Granted: Jun 16, 1981
Filed: Dec 13, 1979
Inventors
Louis L. Wood
Donald W. Larsen
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.