Patents by Inventor Aso Masayuki

Aso Masayuki 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).

  • Closed annular seal
    Publication number: 20030230859
    Abstract: A closed annular seal made by joining the two lengthwise end portions of a stretched porous polytetrafluoroethylene band-shaped body, wherein the length w from the internal peripheral portion to the external peripheral portion of the seal is greater than the width t of the external peripheral surface, the annular portion of the seal may be slanted, and the angle of elevation of the annular portion in relation to a horizontal plane formed at one edge of the internal peripheral surface is 0 to 45°.
    Type: Application
    Filed: April 9, 2003
    Publication date: December 18, 2003
    Inventors: Hirokazu Hisano, Aso Masayuki