Granted Patent
Utility
US 4,273,628 · App. 06/043,377
Production of chromic acid using two-compartment and three-compartment cells
Inventors:
William E. Kidon, Nicholas Shuster, Andrew D. Babinsky
Patented Case
View Patent ↗
Granted: Jun 16, 1981
Filed: May 29, 1979
Inventors
William E. Kidon
Nicholas Shuster
Andrew D. Babinsky
Assignee (at issue)
Diamond Shamrock 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.