Granted Patent
Utility
US 6,100,668 · App. 09/228,269
Battery charger and charging method of secondary batteries
Inventor:
Nobuhiro Takano
Patented Case
View Patent ↗
Granted: Aug 8, 2000
Filed: Jan 11, 1999
Inventor
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.