Patents by Inventor Yasuo Matsumi

Yasuo Matsumi 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).

  • Publication number: 20040244300
    Abstract: An object of the present invention is to provide a metal polishing composition which can polish a metal such as Cu and Ta at a high speed, has a higher efficiency of washing for a hydrophobic low dielectric constant film, and is excellent stability without precipitation of a polishing particle during storage (excellent in stability for storing). The object is achieved by a metal polishing composition comprising an anionic surfactant having 2 or more anionic functional groups in a molecule, a polishing abrasive, an inorganic salt, and water.
    Type: Application
    Filed: May 27, 2004
    Publication date: December 9, 2004
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Naoki Ichiki, Yasuo Matsumi, Masayuki Takashima, Nobuyuki Katsuda
  • Publication number: 20040148867
    Abstract: There is provided a metal abrasive composition which can polish metal wiring at high speed and control the etching rate thereof in manufacturing a semiconductor device. A metal abrasive composition comprises (a) a chelating resin particle having at least one functional group selected from the group consisting of an aminocarboxylic acid group, an aminophosphonic acid group and an iminodiacetic acid group, (b) an inorganic particle, and (c) a surfactant having at least one functional group selected from a group consisting of a carboxylic acid group, a sulfonic acid group and a phosphoric acid group.
    Type: Application
    Filed: November 6, 2003
    Publication date: August 5, 2004
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Yasuo Matsumi
  • Publication number: 20030017785
    Abstract: A metal polish composition comprising a chelate resin particle and an inorganic particle and a polishing method of a metal with said metal polish composition.
    Type: Application
    Filed: February 28, 2002
    Publication date: January 23, 2003
    Inventors: Kazumasa Ueda, Yasuo Matsumi