Granted Patent
Utility
US 5,878,957 · App. 08/805,154
Method and system for precise discharge determination
Inventors:
Tsumoru Takado, Akihisa Sakata
Patented Case
View Patent ↗
Granted: Mar 9, 1999
Filed: Feb 24, 1997
Inventors
Tsumoru Takado
Akihisa Sakata
Assignee (at issue)
NEC 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.