Patents by Inventor Tatsuya TANII

Tatsuya TANII 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).

  • High sealing property ball valve seat
    Patent number: 11002369
    Abstract: A ball valve seat in which a resin or metal impregnated graphite seal ring and an L-shaped metal retainer are integrated by a shrink fit method. The graphite seal ring is provided with a continuous rib having a height of 50 to 250 ?m on the outer periphery of the graphite seal ring. The rib preferably has arc curve of radius R slopes on both sides of the rib from the top to the bottom, and the width L of the bottom of the rib is preferably 550 to 1100 ?m.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: May 11, 2021
    Assignee: NIPPON CARBON CO., LTD.
    Inventors: Toyohiko Kayama, Tatsuya Tanii
  • HIGH SEALING PROPERTY BALL VALVE SEAT
    Publication number: 20200292088
    Abstract: A ball valve seat in which a resin or metal impregnated graphite seal ring and an L-shaped metal retainer are integrated by a shrink fit method. The graphite seal ring is provided with a continuous rib having a height of 50 to 250 ?m on the outer periphery of the graphite seal ring. The rib preferably has arc curve of radius R slopes on both sides of the rib from the top to the bottom, and the width L of the bottom of the rib is preferably 550 to 1100 ?m.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 17, 2020
    Inventors: Toyohiko KAYAMA, Tatsuya TANII