Patents by Inventor Takashi Shikama

Takashi Shikama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Positive temperature coefficient semiconductor heating device
    Patent number: 4037082
    Abstract: An arrangement of components for constructing a heating device employing positive temperature coefficient semiconductor (PTCS) heating elements comprising the PTCS heating element, upper and lower insulating plates, a heat emission plate and a case for entirely covering the layers of the PTCS heating element and the upper and lower insulating plates.
    Type: Grant
    Filed: April 30, 1976
    Date of Patent: July 19, 1977
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Minoru Tamada, Takashi Shikama, Toshikazu Nakamura
  • Positive temperature coefficient semiconductor heating element
    Patent number: 4034207
    Abstract: An arrangement of electrode for positive temperature coefficient semiconductor (PTCS) for use in heating and drying devices and the like, which PTCS is provided with a pair of electrode plates, each having a fork-like configuration with a plurality of branches or fingers in the form of strips extending forward from its base. The strips of both electrodes are disposed alternately on one of the opposing planes of the PTCS body. Each electrode has an extended portion serving as terminal which is bonded on the other plane of the PTCS body in such a manner that the terminal is not confronted, through the PTCS body, with any strips of opposite electrode.
    Type: Grant
    Filed: April 30, 1976
    Date of Patent: July 5, 1977
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Minoru Tamada, Takashi Shikama, Toshikazu Nakamura