Granted Patent
Utility
US 6,573,587 · App. 10/154,824
Metal oxide capacitor with hydrogen diffusion blocking covering
Inventor:
Yasushi Igarashi
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: May 28, 2002
Inventor
Yasushi Igarashi
Assignee (at issue)
OKI ELECTRIC INDUSTRY CO., LTD.
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.