Patents by Inventor Keita Akashi

Keita Akashi 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).

  • Differential pressure measuring apparatus
    Patent number: 7188529
    Abstract: It is related to the shape of a back surface formed to allow a pre-loading diaphragm to become deformed at a threshold pressure value. A differential pressure measuring apparatus has the pre-loading diaphragm which becomes deformed to prevent sensors from being broken when pressure higher than a threshold pressure value is applied, wherein only convex parts of the pre-loading diaphragm are in close contact with convex parts of the back surface of a body respectively.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: March 13, 2007
    Assignee: Yokogawa Electric Corporation
    Inventors: Tetsuya Ooshiba, Ryo Kurosawa, Keita Akashi
  • Differential pressure measuring apparatus
    Publication number: 20060162460
    Abstract: It is related to the shape of a back surface formed to allow a pre-loading diaphragm to become deformed at a threshold pressure value. A differential pressure measuring apparatus has the pre-loading diaphragm which becomes deformed to prevent sensors from being broken when pressure higher than a threshold pressure value is applied, wherein only convex parts of the pre-loading diaphragm are in close contact with convex parts of the back surface of a body respectively.
    Type: Application
    Filed: January 25, 2005
    Publication date: July 27, 2006
    Inventors: Tetsuya Ooshiba, Ryo Kurosawa, Keita Akashi