Granted Patent
Utility
US 5,507,913 · App. 08/352,762
Solvent recovery in pulp bleaching with ozone
Inventors:
Thomas H. Murphy, Robert G. Norris
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Dec 5, 1994
Inventors
Thomas H. Murphy
Robert G. Norris
Assignee (at issue)
MacMillan Bloedel Limited
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.