Granted Patent
Utility
US 4,289,811 · App. 06/123,136
Stable aqueous dispersions of mixed resins and process for use as coating compositions
Inventor:
Ralph R. Shelley, Jr.
Patented Case
View Patent ↗
Granted: Sep 15, 1981
Filed: Feb 21, 1980
Inventor
Ralph R. Shelley, Jr.
Assignee (at issue)
Celanese GmbH
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.