Granted Patent
Utility
US 6,690,163 · App. 09/489,024
Magnetic sensor
Inventors:
Hiroyuki Hoshiya, Katsuro Watanabe, Yasunari Tajima
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Jan 21, 2000
Inventors
Hiroyuki Hoshiya
Katsuro Watanabe
Yasunari Tajima
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.