Patents by Inventor Kainen Watanabe

Kainen Watanabe 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).

  • Insulating plate for rail insulated joint
    Patent number: 4630772
    Abstract: An improved insulating plate for an insulated rail joint includes a main plate portion made of a thermo-plastic resin, thick portions formed on the main plate portion at its side face contacting a joint plate, and planar heater elements embedded in the thick portions.
    Type: Grant
    Filed: April 4, 1986
    Date of Patent: December 23, 1986
    Assignees: Matsushita Electric Industrial Co., Ltd., Japanese National Railways
    Inventors: Kainen Watanabe, Hiroto Yasuhara, Toru Sugiyama, Keiji Shimizu, Yoshihiro Murata