Granted Patent
Utility
US 6,576,369 · App. 09/138,561
Graphite powder suitable for negative electrode material of lithium ion secondary batteries
Inventors:
Koji Moriguchi, Mitsuharu Yonemura, Kazuhito Kamei, Noriyuki Negi, Masaru Abe, Hideya Kaminaka
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Aug 24, 1998
Inventors
Koji Moriguchi
Mitsuharu Yonemura
Kazuhito Kamei
Noriyuki Negi
Masaru Abe
Hideya Kaminaka
Assignees (at issue)
SUMITOMO METAL INDUSTRIES, LTD.
SONY GROUP CORPORATION
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.