Granted Patent
Utility
US 4,436,601 · App. 06/286,565
Metal removal process
Inventors:
Kenneth J. Branchick, Irving Malkin, Mary R. Suchanski
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Jul 24, 1981
Inventors
Kenneth J. Branchick
Irving Malkin
Mary R. Suchanski
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.