Patents by Inventor Nobuyuki Tamari

Nobuyuki Tamari 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).

  • Process for producing composite raw material for ceramics and composite raw material for ceramics produced by said process
    Patent number: 5380686
    Abstract: There are disclosed a process for producing a uniformly mixed composite raw material for ceramics by recovering the uniformly mixed composite raw material for ceramics from the dispersion of at least two types of raw materials for ceramics and optionally a component other than said materials in a liquid medium, which comprises coagulating and precipitating the composite raw material together with aluminum hydroxide formed by reacting an aluminum salt with an alkali in the liquid medium; and a uniformly mixed composite raw material for ceramics which is produced by the above process.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: January 10, 1995
    Assignee: Agency of Industrial Science & Technology
    Inventors: Isao Kondou, Nobuyuki Tamari, Takahiro Tanaka, Satoshi Sodeoka
  • Ceramic implant materials
    Patent number: 4957509
    Abstract: A ceramic implant material is disclosed, which comprises a porous zirconia or silicon nitride ceramic containing silicon carbide whiskers, the pores of which are filled with a material adapted to the tissue.
    Type: Grant
    Filed: August 24, 1989
    Date of Patent: September 18, 1990
    Assignee: Agency of Industrial Science and Technology
    Inventors: Nobuyuki Tamari, Isao Kondoh, Nakoto Kinoshita
  • Adhesive for oxide ceramics and method of bonding oxide ceramics using it
    Patent number: 4857486
    Abstract: Disclosed are an adhesive for oxide ceramics, which comprises as its effective ingredient a crystallized glass mainly comprising SiO.sub.2, Al.sub.2 O.sub.3, Li.sub.2 O, MgO and/or ZnO, and TiO.sub.2 and/or ZrO.sub.2, and also a method of bonding oxide ceramics together, which comprises heating oxide ceramics to be bonded together at 1200.degree. to 1600.degree. C. with the adhesive placed between the ceramics.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: August 15, 1989
    Assignee: Japan as represented by Director General of Agency of Industrial Science and Technology
    Inventors: Yoshihiro Ebata, Masanori Kouyama, Nobuyuki Tamari, Takamichi Kawamoto
  • Method for jointing ceramic elements
    Patent number: 4724020
    Abstract: A method for jointing ceramic elements is disclosed. Ceramic elements to be joined are arranged between a pair of torces each having a nozzle for spouting combustion gas.The joint line of ceramic elements is first heated by flames of combustion gas spouted from each nozzle and, then, a high voltage is applied between said pair of torches. Ceramic elements are joined by said heating and applying a high voltage between torches.
    Type: Grant
    Filed: August 27, 1986
    Date of Patent: February 9, 1988
    Assignee: Japan as represented by Director General, Agency of Industrial Science and Technology
    Inventors: Yoshihiro Ebata, Masanori Kohyama, Nobuyuki Tamari, Makoto Kinoshita, Ryozo Hayami, Susumu Mori, Masahiko Nozawa, Tokuzo Nishi
  • Non-oxide ceramics-metal composite material
    Patent number: 4707416
    Abstract: A composite material composed of a non-oxide type ceramic and iron or an alloy thereof is disclosed, wherein the non-oxide type ceramic is formed with a copper metallized surface and bonded to the iron or alloy thereof with an intermediate layer of Invar steel, Kovar or copper disposed between the copper metallized surface and the iron or alloy thereof.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: November 17, 1987
    Assignee: Agency of Industrial Science and Technology
    Inventors: Yoshihiro Ebata, Ryozo Hayami, Nobuyuki Tamari, Yasuo Toibana, Makoto Kinoshita
  • Process for metallizing the surface of a ceramic
    Patent number: 4525387
    Abstract: A process for metallizing the surface of a ceramic is provided. The surface of a ceramic is coated with a mixture of SiO.sub.2 and at least one copper compound selected from the group consisting of copper carbonate, copper sulfate, copper sulfide, copper oxide, and copper chloride. Thereafter, the film is heated at 900.degree. to 1300.degree. C. in an oxidizing atmosphere to form a baked layer on the surface of the ceramic. The ceramic having the baked layer formed thereon is subjected to a reduction treatment to form a copper-metallized layer on the surface of the ceramic.
    Type: Grant
    Filed: July 13, 1984
    Date of Patent: June 25, 1985
    Assignee: Agency of Industrial Science & Technology
    Inventors: Yoshihiro Ebata, Nobuyuki Tamari, Yasuo Toibana, Ryozo Hayami
  • Method for adhesion of silicon nitride parts
    Patent number: 4484972
    Abstract: Adhesion of two silicon nitride parts is accomplished by interposing a layer of calcium fluoride or a mixture of calcium fluoride with kaoline between the two silicon nitride parts and heating the resultant interposed layer.
    Type: Grant
    Filed: August 12, 1982
    Date of Patent: November 27, 1984
    Assignee: Agency of Industrial Science & Technology Ministry of International Trade & Industry
    Inventors: Yoshihiro Ebata, Nobuyuki Tamari, Makoto Kinoshita, Yasuo Toibana