Patents by Inventor Kazunari Oka

Kazunari Oka 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).

  • MAGNETIC CORE, CURRENT SENSOR PROVIDED WITH THE MAGNETIC CORE, AND CURRENT MEASURING METHOD
    Publication number: 20120217963
    Abstract: A magnetic core to be used in a current sensor includes a first open end plane, which has a first element holding hole for holding a magnetoelectric conversion element formed therein, and a second open end plane, which has a second element holding hole for holding the magnetoelectric conversion element formed therein, and which faces the first open end plane. With such configuration, the magnetic core can improve the detection sensitivity of the current sensor.
    Type: Application
    Filed: March 15, 2011
    Publication date: August 30, 2012
    Applicant: OMRON CORPORATION
    Inventors: Mamiko Naka, Kazunari Oka, Tsukasa Yamashita, Shuichi Itoda
  • Method of manufacturing a mirror and a mirror device
    Publication number: 20070177287
    Abstract: A method of manufacturing a mirror having high verticality and less surface roughness, comprising forming a mask material to the surface of a silicon substrate, applying anisotropic dry etching and anisotropic wet etching, thereby anisotropically dry etching the surface substantially parallel with the crystal face in perpendicular to the surface of the substrate and then forming a reflection surface by the anisotropic wet etching step.
    Type: Application
    Filed: March 28, 2007
    Publication date: August 2, 2007
    Inventors: Kazunari Oka, Takashi Niwa, Norio Chiba, Susumu Ichihara
  • Method of manufacturing a mirror and a mirror device
    Publication number: 20040232106
    Abstract: A method of manufacturing a mirror having high verticality and less surface roughness, comprising forming a mask material to the surface of a silicon substrate, applying anisotropic dry etching and anisotropic wet etching, thereby anisotropically dry etching the surface substantially parallel with the crystal face in perpendicular to the surface of the substrate and then forming a reflection surface by the anisotropic wet etching step.
    Type: Application
    Filed: April 8, 2004
    Publication date: November 25, 2004
    Inventors: Kazunari Oka, Minoru Sudo, Takashi Niwa, Norio Chiba, Susumu Ichihara