Patents by Inventor Ritsu Yokokawa

Ritsu Yokokawa 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).

  • Hair winding device for use in hair permanent process with sequential hair-holding and twisting operation
    Patent number: 6314966
    Abstract: A rotating member is connected through a motor shaft to a motor provided in a housing of the body. A clip is composed of a first holding member and a second holding member, which are energized so that their respective ends are pressed against each other. The first holding member is attached to the end of the rotating member in the direction of the center of its rotating axis. When a switch is turned on in this condition, the rotation of the rotating member is transferred to the first holding member and the clip turns in a prescribed direction. Accordingly the hair held at the end of the clip is twisted at a designated speed in a prescribed direction.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: November 13, 2001
    Assignee: Discovery Co., Ltd.
    Inventor: Ritsu Yokokawa