Granted Patent
Utility
US 4,545,923 · App. 06/460,694
Process for preparing colloidal ceric oxide and complexes thereof with free organic acids
Inventors:
Peter S. Gradeff, Vincent J. Charte, Fred G. Schreiber, John F. Davison
Patented Case
View Patent ↗
Granted: Oct 8, 1985
Filed: Jan 24, 1983
Inventors
Peter S. Gradeff
Vincent J. Charte
Fred G. Schreiber
John F. Davison
Assignee (at issue)
Rhone-Poulenc, 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.