Patents by Inventor Hirobumi Yamamoto

Hirobumi Yamamoto 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).

  • COMPOSITION FOR CERAMIC SUBSTRATE, CERAMIC SUBSTRATE, METHOD FOR PROCESS FOR PRODUCING CERAMIC SUBSTRATE, AND GLASS COMPOSITION
    Publication number: 20090105060
    Abstract: A ceramic substrate composition is provided which can be co-fired with a low-melting metal and exhibits excellent dielectric characteristics at high frequencies, particularly tens of gigahertz. The ceramic substrate composition mainly contains a glass represented by aB2O3-bRe2O3-cZnO, wherein the molar ratios (a, b, and c) fall within a region defined in a ternary composition diagram by Point A (0.4, 0.595, 0.005), Point B (0.4, 0.25, 0.35), Point C (0.52, 0.01, 0.47), Point D (0.9, 0.005, 0.095), and Point E (0.9, 0.09, 0.01).
    Type: Application
    Filed: October 10, 2008
    Publication date: April 23, 2009
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Takahiro Takada, Hirobumi Yamamoto, Keisuke Kageyama
  • Composition for ceramic substrate, ceramic substrate, process for producing ceramic substrate and glass composition
    Patent number: 7396785
    Abstract: A ceramic substrate composition is provided which can be co-fired with a low-melting metal and exhibits excellent dielectric characteristics at high frequencies, particularly tens of gigahertz. The ceramic substrate composition mainly contains a glass represented by aB2O3-bRe2O3-cZnO, wherein the molar ratios (a, b, and c) fall within a region defined in a ternary composition diagram by Point A (0.4, 0.595, 0.005), Point B (0.4, 0.25, 0.35), Point C (0.52, 0.01, 0.47), Point D (0.9, 0.005, 0.095), and Point E (0.9, 0.09, 0.01).
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: July 8, 2008
    Assignee: Murata Manufacturing Co. Ltd
    Inventors: Takahiro Takada, Hirobumi Yamamoto, Keisuke Kageyama
  • COMPOSITION FOR CERAMIC SUBSTRATE, CERAMIC SUBSTRATE, METHOD FOR PRODUCING CERAMIC SUBSTRATE, AND GLASS COMPOSITION
    Publication number: 20080119345
    Abstract: A ceramic substrate composition is provided which can be co-fired with a low-melting metal and exhibits excellent dielectric characteristics at high frequencies, particularly tens of gigahertz. The ceramic substrate composition mainly contains a glass represented by aB2O3-bRe2O3-cZnO, wherein the molar ratios (a, b, and c) fall within a region defined in a ternary composition diagram by Point A (0.4, 0.595, 0.005), Point B (0.4, 0.25, 0.35), Point C (0.52, 0.01, 0.47), Point D (0.9, 0.005, 0.095), and Point E (0.9, 0.09, 0.01).
    Type: Application
    Filed: December 12, 2007
    Publication date: May 22, 2008
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Takahiro Takada, Hirobumi Yamamoto, Keisuke Kageyama
  • Composition for ceramic substrate, ceramic substrate, process for producing ceramic substrate and glass composition
    Publication number: 20060128547
    Abstract: A ceramic substrate composition is provided which can be co-fired with a low-melting metal and exhibits excellent dielectric characteristics at high frequencies, particularly tens of gigahertz. The ceramic substrate composition mainly contains a glass represented by aB2O3-bRe2O3-cZnO, wherein the molar ratios (a, b, and c) fall within a region defined in a ternary composition diagram by Point A (0.4, 0.595, 0.005), Point B (0.4, 0.25, 0.35), Point C (0.52, 0.01, 0.47), Point D (0.9, 0.005, 0.095), and Point E (0.9, 0.09, 0.01).
    Type: Application
    Filed: September 1, 2004
    Publication date: June 15, 2006
    Inventors: Takahiro Takada, Hirobumi Yamamoto, Keisuke Kageyama