Inventor

KOTANI SHO

JP3 patents

Patents

3 patents

US4728779AMar 1, 1988

PTC heating device

TDK CORP34 citations88

US4544829AOct 1, 1985

Electric soldering iron having a PTC heating element

TDK CORP25 citations78

US4468555AAug 28, 1984

Electric soldering iron having a PTC heating element

TDK CORP20 citations78