Granted Patent
Utility
US 5,855,789 · App. 08/831,391
Process for removing selenium from selenium-containing waste streams
Inventors:
Paul Smith, Eugene P. Bergemann
Patented Case
View Patent ↗
Granted: Jan 5, 1999
Filed: Apr 1, 1997
Inventors
Paul Smith
Eugene P. Bergemann
Assignee (at issue)
NTEC Solutions, 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.