Granted Patent
Utility
US 4,182,637 · App. 05/970,889
Post phosphating inhibiting rinse
Inventors:
Joseph V. Otrhalek, Raymond M. Ajluni, Gilbert S. Gomes
Patented Case
View Patent ↗
Granted: Jan 8, 1980
Filed: Dec 19, 1978
Inventors
Joseph V. Otrhalek
Raymond M. Ajluni
Gilbert S. Gomes
Assignee (at issue)
BASF Wyandotte 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.