Granted Patent
Utility
US 5,998,970 · App. 09/106,306
Battery charging operation and a detection of a fully charged condition of the charged battery
Inventors:
Kenrou Ishimaru, Nobuhiro Takano
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Jun 29, 1998
Inventors
Kenrou Ishimaru
Nobuhiro Takano
Assignee (at issue)
Hitachi Koki 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.