Patents by Inventor Masaaki Takido

Masaaki Takido 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).

  • Marking method and marked molding
    Publication number: 20050145131
    Abstract: A method for readily applying a marking to an object made of PTFE, for example, a seal ring provided with a cut portion on a part of a circumference, or an intermediate product for the seal ring, comprising the steps of preparing an object to be marked that is made of PTFE, irradiating a laser beam onto the object to be marked to alter the state of only an irradiated surface of the PTFE, and forming a marking with a white-based color on the irradiated surface of the PTFE so that the irradiated surface exhibits a color tone different from that of a non-irradiated surface of the PTFE.
    Type: Application
    Filed: October 1, 2003
    Publication date: July 7, 2005
    Inventors: Masaaki Takido, Tadashi Abiko, Toshihiko Umehara