Granted Patent
Utility
US 6,689,187 · App. 09/925,975
Tantalum powder for capacitors
Inventor:
Yukio Oda
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Aug 10, 2001
Inventor
Yukio Oda
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.