Granted Patent
Utility
US 6,139,815 · App. 09/254,828
Hydrogen lithium titanate and manufacturing method therefor
Inventors:
Yoshinori Atsumi, Masayuki Nagamine, Hiromi Koga, Tokuo Suita
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Jul 14, 1999
Inventors
Yoshinori Atsumi
Masayuki Nagamine
Hiromi Koga
Tokuo Suita
Assignees (at issue)
SONY GROUP CORPORATION
ISHIHARA SANGYO KAISHA, 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.