Patents by Inventor Mituyoshi Aizawa

Mituyoshi Aizawa 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).

  • Corrosion-resistant diaphragm pressure sensor
    Patent number: 6474169
    Abstract: A diaphragm pressure sensor (1) includes a pressure guide member (3) made of fluoroplastics for the admission of liquid chemicals, pressure of which is measured. A pressure frame (4) made of perfluoroalkoxy resin is integrated with the pressure guide member (3) to form a wetted part 6 of the liquid chemicals. A ceramic diaphragm (8) with built-in pressure sensor (7) is bonded to the surface of the pressure frame (4) opposite to the surface to which pressure is applied. A body (2) is provided for housing the pressure guide member (3), pressure frame (4) and diaphragm (8).
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: November 5, 2002
    Assignee: Tem-Tech Lab Co., Ltd.
    Inventors: Mituyoshi Aizawa, Yoshinori Kawamura