Granted Patent
Utility
US 6,809,622 · App. 10/124,368
Coil Device
Inventors:
Toru Hirohashi, Kiyoshi Hironaka, Yasuo Yamashita, Masaki Shinoda
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Apr 18, 2002
Inventors
Toru Hirohashi
Kiyoshi Hironaka
Yasuo Yamashita
Masaki Shinoda
Assignee (at issue)
FDK CORPORATION
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.