Granted Patent
Utility
US 4,889,765 · App. 07/136,264
Ink-receptive, water-based, coatings
Inventor:
John L. Wallace
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Dec 22, 1987
Inventor
John L. Wallace
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.