Granted Patent
Utility
US 5,437,795 · App. 08/264,810
Chromatographic separation of erbium isotopes
Inventors:
Thomas S. Snyder, Steven H. Peterson, Umesh P. Nayak, Richard J. Beleski
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Jun 23, 1994
Inventors
Thomas S. Snyder
Steven H. Peterson
Umesh P. Nayak
Richard J. Beleski
Assignee (at issue)
Westinghouse Electric Company LLC
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.