Granted Patent
Utility
US 4,657,964 · App. 06/752,150
Aqueous-based urethane coating compositions
Inventors:
Kwo-Hrong Lai, Milton Lapkin, Frank B. Swasey
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Jul 3, 1985
Inventors
Kwo-Hrong Lai
Milton Lapkin
Frank B. Swasey
Assignee (at issue)
ICI Americas, 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.