Granted Patent
Utility
US 5,753,200 · App. 08/726,677
Sodium metabisulfite process
Inventors:
Vladimir M. Zolotoochin, Jim P. Metziner, David M. Hansen
Patented Case
View Patent ↗
Granted: May 19, 1998
Filed: Oct 7, 1996
Inventors
Vladimir M. Zolotoochin
Jim P. Metziner
David M. Hansen
Assignee (at issue)
Solvay Minerals, 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.