Granted Patent
Utility
US 5,207,890 · App. 07/714,818
Use of barium chromate as a sulfate scavenger in chromium electroplating baths
Inventors:
Kenneth R. Newby, Allen R. Jones, John Meng
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Jun 13, 1991
Inventors
Kenneth R. Newby
Allen R. Jones
John Meng
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.