Patents by Inventor Miho Kurihara

Miho Kurihara 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).

  • Patent number: 7163644
    Abstract: A CMP abrasive comprising a cerium oxide slurry containing cerium oxide particles, a dispersant and water, and a liquid additive containing a dispersant and water; and a liquid additive for the CMP abrasive. A method for polishing a substrate which comprises holding a substrate having, formed thereon, a film to be polished against a polishing pad of a polishing platen, followed by pressing, and moving the substrate and the polishing platen while supplying the above CMP abrasive in between the film to be polished and the polishing pad to thereby polish the film to be polished. The CMP abrasive and the method for polishing can be used for polishing a surface to be polished such as a silicone oxide film or a silicon nitride film without contaminating the surface to be polished with an alkali metal such as sodium ions and with no flaws, and the CMP abrasive is excellent in storage stability.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: January 16, 2007
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Toshihiko Akahori, Toranosuke Ashizawa, Keizo Hirai, Miho Kurihara, Masato Yoshida, Yasushi Kurata
  • Publication number: 20060197054
    Abstract: A CMP abrasive comprising a cerium oxide slurry containing cerium oxide particles, a dispersant and water, and a liquid additive containing a dispersant and water; and a liquid additive for the CMP abrasive. A method for polishing a substrate which comprises holding a substrate having, formed thereon, a film to be polished against a polishing pad of a polishing platen, followed by pressing, and moving the substrate and the polishing platen while supplying the above CMP abrasive in between the film to be polished and the polishing pad to thereby polish the film to be polished. The CMP abrasive and the method for polishing can be used for polishing a surface to be polished such as a silicone oxide film or a silicon nitride film without contaminating the surface to be polished with an alkali metal such as sodium ions and with no flaws, and the CMP abrasive is excellent in storage stability.
    Type: Application
    Filed: April 20, 2006
    Publication date: September 7, 2006
    Applicant: HITACHI CHEMICAL CO., LTD.
    Inventors: Toshihiko Akahori, Toranosuke Ashizawa, Keizo Hirai, Miho Kurihara, Masato Yoshida, Yasushi Kurata
  • Publication number: 20060186372
    Abstract: A CMP abrasive comprising a cerium oxide slurry containing cerium oxide particles, a dispersant and water, and a liquid additive containing a dispersant and water; and a liquid additive for the CMP abrasive. A method for polishing a substrate which comprises holding a substrate having, formed thereon, a film to be polished against a polishing pad of a polishing platen, followed by pressing, and moving the substrate and the polishing platen while supplying the above CMP abrasive in between the film to be polished and the polishing pad to thereby polish the film to be polished. The CMP abrasive and the method for polishing can be used for polishing a surface to be polished such as a silicone oxide film or a silicon nitride film without contaminating the surface to be polished with an alkali metal such as sodium ions and with no flaws, and the CMP abrasive is excellent in storage stability.
    Type: Application
    Filed: April 20, 2006
    Publication date: August 24, 2006
    Applicant: HITACHI CHEMICAL CO., LTD.
    Inventors: Toshihiko Akahori, Toranosuke Ashizawa, Keizo Hirai, Miho Kurihara, Masato Yoshida, Yasushi Kurata
  • Publication number: 20050269295
    Abstract: A CMP abrasive comprising a cerium oxide slurry containing cerium oxide particles, a dispersant and water, and a liquid additive containing a dispersant and water; and a liquid additive for the CMP abrasive. A method for polishing a substrate which comprises holding a substrate having, formed thereon, a film to be polished against a polishing pad of a polishing platen, followed by pressing, and moving the substrate and the polishing platen while supplying the above CMP abrasive in between the film to be polished and the polishing pad to thereby polish the film to be polished. The CMP abrasive and the method for polishing can be used for polishing a surface to be polished such as a silicone oxide film or a silicon nitride film without contaminating the surface to be polished with an alkali metal such as sodium ions and with no flaws, and the CMP abrasive is excellent in storage stability.
    Type: Application
    Filed: July 11, 2005
    Publication date: December 8, 2005
    Applicant: Hitachi Chemical Company Ltd.
    Inventors: Toshihiko Akahori, Toranosuke Ashizawa, Keizo Hirai, Miho Kurihara, Masato Yoshida, Yasushi Kurata
  • Publication number: 20050118820
    Abstract: A CMP abrasive comprising a cerium oxide slurry containing cerium oxide particles, a dispersant and water, and a liquid additive containing a dispersant and water; and a liquid additive for the CMP abrasive. A method for polishing a substrate which comprises holding a substrate having, formed thereon, a film to be polished against a polishing pad of a polishing platen, followed by pressing, and moving the substrate and the polishing platen while supplying the above CMP abrasive in between the film to be polished and the polishing pad to thereby polish the film to be polished. The CMP abrasive and the method for polishing can be used for polishing a surface to be polished such as a silicone oxide film or a silicon nitride film without contaminating the surface to be polished with an alkali metal such as sodium ions and with no flaws, and the CMP abrasive is excellent in storage stability.
    Type: Application
    Filed: November 18, 2004
    Publication date: June 2, 2005
    Applicant: Hitachi Chemical Company Ltd.
    Inventors: Toshihiko Akahori, Toranosuke Ashizawa, Keizo Hirai, Miho Kurihara, Masato Yoshida, Yasushi Kurata
  • Patent number: 6783434
    Abstract: A CMP abrasive comprising a cerium oxide slurry containing cerium oxide particles, a dispersant and water, and a liquid additive containing a dispersant and water; and a liquid additive for the CMP abrasive. A method for polishing a substrate which comprises holding a substrate having, formed thereon, a film to be polished against a polishing pad of a polishing platen, followed by pressing, and moving the substrate and the polishing platen while supplying the above CMP abrasive in between the film to be polished and the polishing pad to thereby polish the film to be polished. The CMP abrasive and the method for polishing can be used for polishing a surface to be polished such as a silicone oxide film or a silicon nitride film without contaminating the surface to be polished with an alkali metal such as sodium ions and with no flaws, and the CMP abrasive is excellent in storage stability.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: August 31, 2004
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Toshihiko Akahori, Toranosuke Ashizawa, Keizo Hirai, Miho Kurihara, Masato Yoshida, Yasushi Kurata
  • Publication number: 20040147206
    Abstract: A CMP abrasive comprising a cerium oxide slurry containing cerium oxide particles, a dispersant and water, and a liquid additive containing a dispersant and water; and a liquid additive for the CMP abrasive. A method for polishing a substrate which comprises holding a substrate having, formed thereon, a film to be polished against a polishing pad of a polishing platen, followed by pressing, and moving the substrate and the polishing platen while supplying the above CMP abrasive in between the film to be polished and the polishing pad to thereby polish the film to be polished. The CMP abrasive and the method for polishing can be used for polishing a surface to be polished such as a silicone oxide film or a silicon nitride film without contaminating the surface to be polished with an alkali metal such as sodium ions and with no flaws, and the CMP abrasive is excellent in storage stability.
    Type: Application
    Filed: January 20, 2004
    Publication date: July 29, 2004
    Applicant: Hitachi Chemical Company Ltd.
    Inventors: Toshihiko Akahori, Toranosuke Ashizawa, Keizo Hirai, Miho Kurihara, Masato Yoshida, Yasushi Kurata
  • Publication number: 20020162386
    Abstract: A method of measuring a concentration and a molecular weight distribution of glue or gelatin contained in an electrolyte, which comprises high performance liquid chromatography combined with column switching.
    Type: Application
    Filed: October 30, 2001
    Publication date: November 7, 2002
    Inventors: Takeo Taguchi, Yasuo Komoda, Kenzo Okada, Hiroshi Hata, Miho Kurihara