Granted Patent
Utility
US 5,269,905 · App. 07/741,979
Apparatus and process to regenerate a trivalent chromium bath
Inventor:
Bradley Reynolds
Patented Case
View Patent ↗
Granted: Dec 14, 1993
Filed: Aug 6, 1991
Inventor
Bradley Reynolds
Assignee (at issue)
Elf Atochem North America, 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.