Granted Patent
Utility
US 6,788,525 · App. 10/431,653
Powdered tantalum, niobium, production process thereof and porous sintered body and solid electrolytic capacitor using the powdered tantalum or niobium
Inventors:
Ryosuke Suzuki, Rieko Ishii, Tadao Nishiyama, Hitoshi Iijima
Patented Case
View Patent ↗
Granted: Sep 7, 2004
Filed: May 7, 2003
Inventors
Ryosuke Suzuki
Rieko Ishii
Tadao Nishiyama
Hitoshi Iijima
Assignee (at issue)
Cabot Supermetals K.K.
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.