Patents by Inventor Harumi Tasaki

Harumi Tasaki 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).

  • Line switch part snow melting device
    Patent number: 6664521
    Abstract: A thawing device for railway track points is constituted by connecting a heating coil (1a) wound around a floor plate (2) for heating the floor plate (2) by induction to an inverter device (5) for supplying high-frequency current to the heating coil (1a), via a connection cable (4); and providing a protection against magnetism (9, 10a-10c, 11a-11c , 12a, 12b) about the periphery of the heating coil (1a) and the connection cable (4).
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: December 16, 2003
    Assignees: Matsushita Electric Industrial Co., Ltd., West Japan Railway Company, West Japan Railway Technos Corporation
    Inventors: Shinji Kondo, Youji Uetani, Yoshiki Hama, Jun Iguchi, Harumi Tasaki, Atsushi Fujisawa, Sadatsugu Higashide