Granted Patent
Utility
US 4,810,337 · App. 07/180,503
Method of treating a chromium electroplating bath which contains an alkyl sulfonic acid to prevent heavy lead dioxide scale build-up on lead or lead alloy anodes used therein
Inventor:
Kenneth R. Newby
Patented Case
View Patent ↗
Granted: Mar 7, 1989
Filed: Apr 12, 1988
Inventor
Kenneth R. Newby
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.