Granted Patent
Utility
US 5,169,888 · App. 07/801,016
Dispersion composition and method for making and using same
Inventor:
Allen A. Sales
Patented Case
View Patent ↗
Granted: Dec 8, 1992
Filed: Dec 2, 1991
Inventor
Allen A. Sales
Assignee (at issue)
Amoco 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.