Patents by Inventor Teppei Kayama

Teppei Kayama 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).

  • Protective Member and Protective Body Using the Same
    Publication number: 20100260972
    Abstract: This invention provides a protective member comprising a ceramic body comprising a plurality of first phases (2) composed mainly of silicon carbide and a plurality of second phases (3) having a composition different from the composition of the first phase (2) and containing at least boron, silicon and carbon. A part of the second phase is present in the first phase as a whole, and at least a part of the remaining part of the second phase is present between a plurality of the first phases.
    Type: Application
    Filed: March 28, 2008
    Publication date: October 14, 2010
    Applicant: KYOCERA CORPORATION
    Inventors: Takehiro Oda, Teppei Kayama, Masahito Nakanishi
  • Boron carbide sintered body and method of manufacturing the same and protective body
    Patent number: 7776773
    Abstract: A boron carbide sintered body having a plurality of pores, comprises a boron carbide as a main component and a plurality of graphite particles dispersed in the sinter. The graphite particles is exposed to the pores or is in the vicinity of the pores.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: August 17, 2010
    Assignee: Kyocera Corporation
    Inventors: Nobuyuki Horiuchi, Teppei Kayama, Masahito Nakanishi, Takehiro Oda
  • Boron carbide sintered body and protective member
    Patent number: 7557054
    Abstract: The compressive strength of a boron carbide sintered compact is improved by controlling crystals of the boron carbide to a polycrystalline structure having a grain size distribution in which coarse crystals with a grain size of 20 ?m or more and fine crystals with a grain size of 10 ?m or less are mixed in an appropriate ratio. Furthermore, a protective member having an improved compressive strength can be provided using the boron carbide sintered compact having a polycrystalline structure in which coarse crystals and fine crystals are mixed in an appropriate ratio or a boron carbide sintered compact containing graphite and silicon carbide.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: July 7, 2009
    Assignee: Kyocera Corporation
    Inventors: Takehiro Oda, Masahito Nakanishi, Teppei Kayama
  • BORON CARBIDE SINTERED BODY AND METHOD OF MANUFACTURING THE SAME AND PROTECTIVE BODY
    Publication number: 20080227618
    Abstract: A boron carbide sintered body having a plurality of pores, comprises a boron carbide as a main component and a plurality of graphite particles dispersed in the sinter. The graphite particles is exposed to the pores or is in the vicinity of the pores.
    Type: Application
    Filed: November 28, 2007
    Publication date: September 18, 2008
    Applicant: KYOCERA CORPORATION
    Inventors: Nobuyuki HORIUCHI, Teppei Kayama, Masahito Nakanishi, Takehiro Oda
  • BORON CARBIDE SINTERED BODY AND PROTECTIVE MEMBER
    Publication number: 20070203012
    Abstract: The compressive strength of a boron carbide sintered compact is improved by controlling crystals of the boron carbide to a polycrystalline structure having a grain size distribution in which coarse crystals with a grain size of 20 ?m or more and fine crystals with a grain size of 10 ?m or less are mixed in an appropriate ratio. Furthermore, a protective member having an improved compressive strength can be provided using the boron carbide sintered compact having a polycrystalline structure in which coarse crystals and fine crystals are mixed in an appropriate ratio or a boron carbide sintered compact containing graphite and silicon carbide.
    Type: Application
    Filed: February 27, 2007
    Publication date: August 30, 2007
    Applicant: KYOCERA CORPORATION
    Inventors: Takehiro Oda, Masahito Nakanishi, Teppei Kayama