Granted Patent
Utility
US 6,522,237 · App. 09/432,821
Electrode for PTC thermistor and method for producing the same, and PTC thermistor
Inventors:
Masahiko Ito, Masakazu Tanahashi, Toshiro Kume, Kouichi Morimoto, Junji Kojima, Emiko Igaki
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Oct 29, 1999
Inventors
Masahiko Ito
Masakazu Tanahashi
Toshiro Kume
Kouichi Morimoto
Junji Kojima
Emiko Igaki
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.