Granted Patent
Utility
US 6,447,570 · App. 09/726,866
Sintered Tantalum and Niobium capacitor pellets doped with Nitrogen, and method of making the same
Inventor:
Yuri L. Pozdeev-Freeman
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Nov 30, 2000
Inventor
Yuri L. Pozdeev-Freeman
Assignee (at issue)
VISHAY SPRAGUE, 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.