Patents by Inventor Yukihiro Ichikawa

Yukihiro Ichikawa 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).

  • Method for manufacturing semiconductor device
    Patent number: 11967564
    Abstract: A method for manufacturing a semiconductor device includes: forming an insulating film on a surface of a semiconductor layer of a semiconductor substrate; forming a contact hole in the insulating film; forming a conductor material on the insulating film to be in contact with the semiconductor layer through the contact hole; and patterning the conductor material using an alignment key included in the conductor material.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: April 23, 2024
    Assignee: DENSO CORPORATION
    Inventors: Aiko Kaji, Haruhito Ichikawa, Shuhei Mitani, Tomohiro Mimura, Yukihiro Wakasugi, Narumasa Soejima
  • Self-extinguishing resin composition
    Patent number: 4067847
    Abstract: A self-extinguishing resin composition comprises 55 - 25 wt. % of a thermoplastic resin and 45 - 75 wt. % of magnesium hydroxide, wherein said magnesium hydroxide has a specific surface area of less than or equal to 45 m.sup.2 /g. Such a composition is not subject to formation of a silver-colored streak upon being extrusion- or injection-molded.
    Type: Grant
    Filed: October 17, 1975
    Date of Patent: January 10, 1978
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Hiroshi Yui, Saburo Moriwaki, Yukihiro Ichikawa, Shigekazu Ohi