Granted Patent
Utility
US 6,386,305 · App. 09/257,190
Propulsion motor control apparatus for battery vehicle
Inventors:
Osamu Nakakita, Tatsuyuki Amamiya, Yoshimi Okazaki
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Feb 25, 1999
Inventors
Osamu Nakakita
Tatsuyuki Amamiya
Yoshimi Okazaki
Assignee (at issue)
Tsubishi Heavy Industries, 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.