Granted Patent
Utility
US 6,015,535 · App. 08/858,758
Process for producing purified cesium compound from cesium alum
Inventors:
Patrick M. Brown, Michael C. Northrup, Bart F. Bakke
Patented Case
View Patent ↗
Granted: Jan 18, 2000
Filed: May 19, 1997
Inventors
Patrick M. Brown
Michael C. Northrup
Bart F. Bakke
Assignee (at issue)
Cabot Corporation
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.