Patents by Inventor Kazuhiko Koiwai

Kazuhiko Koiwai 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).

  • Heater cable in combination with a lead cable
    Patent number: 6388237
    Abstract: A heater cable is wired in combination with a lead cable, the two cables form a pattern wherein the heater cable and the lead cable are spaced by a predetermined distance L, in the range of 0 to 10 mm, from each other and are supplied with opposite flow of current. The heater cable has a core thread, a heating element wire wound in a spiral on the outer surface of the core thread, a fusing layer provided over the heating element wire, a signal wire wound in a spiral on the outer surface of the fusing layer and a protective coating provided over the signal wire. The lead cable has a conductive wire covered at its outer surface with an insulating coating.
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: May 14, 2002
    Assignees: Totoku Electric Co., Ltd., Toyo Boseki Kabushiki Kaisha
    Inventors: Shouhei Miyahara, Hidekazu Aoki, Kazuhiko Koiwai, Atsushi Nakajima, Toshikazu Nishiwaki, Yutaka Mizumura
  • Heater cable in combination with a lead cable
    Publication number: 20010054611
    Abstract: A heater cable is wired in combination with a lead cable, the two cables are formed such a pattern that the heater cable and the lead cable are spaced by a predetermined distance L from each other and are capable to be supplied with opposite flows of current. The heater cable has a core thread, a heating element wire wound in a spiral on the outer surface of the core thread, a fusing layer provided over the heating element wire, a signal wire wound in a spiral on the outer surface of the fusing layer and a protective coating provided over the signal wire. The lead cable has a conductive wire covered at its outer surface with an insulating coating.
    Type: Application
    Filed: July 3, 2001
    Publication date: December 27, 2001
    Applicant: TOTOKU ELECTRIC CO., LTD.
    Inventors: Shouhei Miyahara, Hidekazu Aoki, Kazuhiko Koiwai, Atsushi Nakajima, Toshikazu Nishiwaki, Yutaka Mizumura