Patents by Inventor Kazuo Kogure

Kazuo Kogure 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).

  • Light wavelength tuning device and light source optical demultiplexer and wavelength division multiplexed optical communication system using the tuning device
    Patent number: 6282340
    Abstract: The optical output of an optical device branched by means of an optical coupler is partially fetched by means of a wavelength stabilizer that includes an FBG section, whereby the passing wavelength characteristic of a fiber grating, which is believed originally to depend little on temperature, can be prevented from further changing. The wavelength of the optical device is tuned by means of a light wavelength tuning device that includes the wavelength stabilizer. Thus, the tuned wavelength is less liable to suffer an error that is attributable to the change of environmental temperature, so that the temperature dependence of the wavelength tuning operation is lowered.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: August 28, 2001
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Hideyuki Nasu, Hideyuki Omura, Kazuo Kogure, Tomoyuki Kato
  • Method for manufacturing compound semiconductor devices including a step where the semiconductor is etched without exposure to light
    Patent number: 5250471
    Abstract: A method for manufacturing a compound semiconductor device in which a mixed crystal layer containing a III-V group compound is formed on a substrate, characterized in that when a part of the mixed crystal layer is subjected to etching by an etching liquid, the etching portion is subjected to etching while maintaining the state of not exposing light to the etching portion.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: October 5, 1993
    Assignees: The Furukawa Electric Co., Fujitsu Limited
    Inventors: Kazuo Kogure, Masanori Ishii
  • Brake control apparatus for a vehicle
    Patent number: 4679668
    Abstract: A brake control apparatus for a vehicle includes brake apparatus for the respective wheels which are operated by pressurized fluid from a master cylinder; an electro-magnetic valve arranged in a conduit connecting the master cylinder with at least one of the brake apparatus, the electro-magnetic valve being normally in the communicating state and being changed over into the intercepting state by an external instruction; at least one of the brake apparatus being of the disc brake type, the one comprising; (a) a disc rotor; (b) first and second friction pad assemblies for engagement with opposite sides of the disc rotor, the assemblies being guided for movement towards the disc rotor; (c) a caliper body straddling the peripheral edge of the disc rotor and the first and second friction assemblies; (d) an actuating member arranged in the caliper body for urging the first and second friction pad assemblies into engagement with the disc rotor, and (e) elastically deformable retainers for supporting the first and se
    Type: Grant
    Filed: April 22, 1986
    Date of Patent: July 14, 1987
    Assignees: Fuji Heavy Industries Ltd., Nippon Air Brake Co., Ltd.
    Inventors: Shoichi Washizu, Takeshi Morijiri, Kazuo Kogure, Satoshi Arimitsu