Granted Patent
Utility
US 5,825,187 · App. 08/843,053
Magnetic circuit system with opposite permanent magnets
Inventors:
Ken Ohashi, Yuhito Yoneda, Koji Miyata, Dai Higuchi
Patented Case
View Patent ↗
Granted: Oct 20, 1998
Filed: Apr 11, 1997
Inventors
Ken Ohashi
Yuhito Yoneda
Koji Miyata
Dai Higuchi
Assignee (at issue)
Shin-Etsu Chemical Co., 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.