Patents by Inventor Takashi Kogai

Takashi Kogai 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).

  • Surface acoustic wave sensor
    Patent number: 9678042
    Abstract: A surface acoustic wave sensor of the invention includes: a piezo element that propagates a surface acoustic wave; an electrode that carries out conversion of an electrical signal and a surface acoustic wave; and a porous base member into which liquid infiltrates and which comes into contact with the piezo element.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: June 13, 2017
    Assignee: JAPAN RADIO CO., LTD.
    Inventors: Takashi Kogai, Hiromi Yatsuda
  • Surface Acoustic Wave Sensor
    Publication number: 20140305221
    Abstract: A surface acoustic wave sensor of the invention includes: a piezo element that propagates a surface acoustic wave; an electrode that carries out conversion of an electrical signal and a surface acoustic wave; and a porous base member into which liquid infiltrates and which comes into contact with the piezo element.
    Type: Application
    Filed: November 1, 2012
    Publication date: October 16, 2014
    Inventors: Takashi Kogai, Hiromi Yatsuda
  • Surface acoustic wave element and equipment for measuring characteristics of liquid material
    Patent number: 8322218
    Abstract: A surface acoustic wave device having electrodes disposed on a piezoelectric substrate, comprising a sealing member having a peripheral wall disposed on the piezoelectric substrate in surrounding relation to the electrodes, and a top plate covering the peripheral wall; and a sealing stiffener disposed on the piezoelectric substrate in facing relation to a liquid material imposed on the piezoelectric substrate and which extends parallel to a portion of the peripheral wall.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: December 4, 2012
    Assignee: Japan Radio Co., Ltd.
    Inventors: Takashi Kogai, Hiromi Yatsuda
  • Surface Acoustic Wave Element and Equipment for Measuring Characteristics of Liquid Material
    Publication number: 20100236322
    Abstract: A surface acoustic wave device having electrodes disposed on a piezoelectric substrate, comprising a sealing member having a peripheral wall disposed on the piezoelectric substrate in surrounding relation to the electrodes, and a top plate covering the peripheral wall; and a sealing stiffener disposed on the piezoelectric substrate in facing relation to a liquid material imposed on the piezoelectric substrate and which extends parallel to a portion of the peripheral wall.
    Type: Application
    Filed: November 17, 2008
    Publication date: September 23, 2010
    Inventors: Takashi Kogai, Hiromi Yatsuda