Patents by Inventor Itsuho Tajima

Itsuho Tajima 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).

  • Pipe interior cleaning apparatus
    Patent number: 5465448
    Abstract: The present invention provides a pipe interior cleaning apparatus which can be operated at an inexpensive cost and with no special facility required, assuring an improved derusting effect. This pipe interior cleaning apparatus comprises a rod-like guide, knobs provided at opposite ends of said guide, and a cleaning member into which said guide is inserted and which is made to be slidable along said guide.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: November 14, 1995
    Assignee: Tajima Denken Co., Ltd.
    Inventors: Itsuho Tajima, Yoshitaka Tajima