Granted Patent
Utility
US 4,711,705 · App. 07/004,374
Activation composition and method for forming adherent chromium electrodeposits on ferrous metal substrates from high energy efficient baths
Inventors:
Nicholas M. Martyak, John A. Corsentino, Warren H. McMullen
Patented Case
View Patent ↗
Granted: Dec 8, 1987
Filed: Jan 15, 1987
Inventors
Nicholas M. Martyak
John A. Corsentino
Warren H. McMullen
Assignee (at issue)
M&T Chemicals, 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.