Granted Patent
Utility
US 6,521,173 · App. 09/906,208
Low oxygen refractory metal powder for powder metallurgy
Inventors:
Prabhat Kumar, Paul R. Aimone, Robert W. Balliett, Anthony Parise, Thomas Ramlow, Henning Uhlenhut
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Jul 16, 2001
Inventors
Prabhat Kumar
Paul R. Aimone
Robert W. Balliett
Anthony Parise
Thomas Ramlow
Henning Uhlenhut
Assignee (at issue)
H.C. STARCK 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.