Granted Patent
Utility
US 6,555,077 · App. 09/763,140
Organic impurity removal process for bayer liquors
Inventors:
Steven Rosenberg, Wayne Tichbon, Steven J. Healy
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Feb 20, 2001
Inventors
Steven Rosenberg
Wayne Tichbon
Steven J. Healy
Assignee (at issue)
Worsley Alumina Pty. Ltd.
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.