Patents by Inventor Shirou Miura

Shirou Miura 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).

  • Polishing composition
    Patent number: 6027669
    Abstract: A polishing composition comprising fumed silica, a basic potassium compound and water, of which the specific electric conductivity is from 100 to 5,500 .mu.S/cm.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: February 22, 2000
    Assignee: Fujimi Incorporated
    Inventors: Shirou Miura, Atsunori Kawamura, Kazusei Tamai
  • Polishing composition
    Patent number: 6027554
    Abstract: A polishing composition comprising silicon nitride fine powder, water and an acid.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: February 22, 2000
    Assignee: Fujimi Incorporated
    Inventors: Hitoshi Kodama, Satoshi Suzumura, Noritaka Yokomichi, Shirou Miura, Hideki Otake, Atsunori Kawamura, Masatoki Ito
  • Polishing composition
    Patent number: 5733819
    Abstract: A polishing composition comprising silicon nitride fine powder, water and an acid.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: March 31, 1998
    Assignee: Fujimi Incorporated
    Inventors: Hitoshi Kodama, Satoshi Suzumura, Noritaka Yokomichi, Shirou Miura, Hideki Otake, Atsunori Kawamura, Masatoki Ito