Patents Assigned to Ni-Cera
  • Process for fabricating a positive-temperature-coefficient heating device
    Patent number: 5077889
    Abstract: A process for fabricating a PTC thermistor device. A pair of opposing electrodes are formed on either major surface of a ceramic plate PTC thermistor element. Metallic plate heat radiation fins are secured to the opposing electrodes by brazing in a non-oxidizing environment. The PTC thermistor element is then heat treated in an oxidizing environment. Optionally, the opposing electrodes may include shield layers for preventing emission of gas from the PTC thermistor element during brazing.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: January 7, 1992
    Assignees: Ni-Cera, Mitsubishi Aluminum Kabushiki Kaisha
    Inventors: Yasuaki Matsuda, Daisuke Takahata, Mitsuo Aoki, Hiroshi Takemura