Granted Patent
Utility
US 6,788,024 · App. 10/390,148
Position-sensorless motor control method and apparatus
Inventors:
Satoru Kaneko, Ryoso Masaki, Takefumi Sawada
Patented Case
View Patent ↗
Granted: Sep 7, 2004
Filed: Mar 18, 2003
Inventors
Satoru Kaneko
Ryoso Masaki
Takefumi Sawada
Assignee (at issue)
HITACHI, 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.