Granted Patent
Utility
US 4,475,950 · App. 06/371,405
Printing ink compositions containing organophilic clay gellant
Inventor:
Claude M. Finlayson
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Apr 26, 1982
Inventor
Claude M. Finlayson
Assignee (at issue)
NL Industries, 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.