Granted Patent
Utility
US 5,317,121 · App. 07/947,836
Induction heating apparatus having openable and closable coil
Inventors:
Keiichi Katayama, Mitsuo Kato, Kazuya Tsurusaki, Mikio Hanamoto, Kazumasa Mihara, Takatoshi Eguchi
Patented Case
View Patent ↗
Granted: May 31, 1994
Filed: Sep 21, 1992
Inventors
Keiichi Katayama
Mitsuo Kato
Kazuya Tsurusaki
Mikio Hanamoto
Kazumasa Mihara
Takatoshi Eguchi
Assignee (at issue)
MITSUBISHI KOGYO KABUSHIKI KAISHA
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.