Granted Patent
Utility
US 6,771,033 · App. 10/341,342
Drive control system for sensor-less motor
Inventors:
Yasuhiko Kokami, Kunihiro Kawauchi, Toshiyuki Tsunoda, Reiichi Kimura
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Jan 14, 2003
Inventors
Yasuhiko Kokami
Kunihiro Kawauchi
Toshiyuki Tsunoda
Reiichi Kimura
Assignees (at issue)
Renesas Technology Corporation
Hitachi Ulsi Systems Co., Ltd.
Hitachi Tohbu Semiconductor, 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.