Granted Patent
Utility
US 6,312,571 · App. 09/511,989
Activated cathode and process for preparation thereof
Inventors:
Miwako Nara, Masashi Tanaka, Yoshinori Nishiki, Shuji Nakamatsu
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: Feb 24, 2000
Inventors
Miwako Nara
Masashi Tanaka
Yoshinori Nishiki
Shuji Nakamatsu
Assignee (at issue)
PERMELEC ELECTRODE 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.