Granted Patent
Utility
US 4,256,602 · App. 05/965,720
Fluoroborate complex composition and method for cleaning aluminum at low temperatures
Inventor:
Hugh D. McLaughlin, Jr.
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Dec 1, 1978
Inventor
Hugh D. McLaughlin, Jr.
Assignee (at issue)
Pennwalt 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.