Patents by Inventor Tatsuhiko Aizawa

Tatsuhiko Aizawa 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: 10060021
    Abstract: [Problem] To provide a means for forming a thin-film in a desired part of an object to be treated. [Solution] The thin-film formation means according to the present invention is part of a thin-film formation method which supplies electricity to a raw-material gas in a reduced pressure container, converting the raw-material gas to plasma, and irradiates the plasma, thus forming a thin-film on the surface of an object to be treated. Therein, the effect of a magnetic field generated by a magnetic field generating means is used to form the thin-film in a desired part. The effect of the magnetic field focuses the flux of the plasma in a desired part of the surface of the object to be treated, thus enabling the thin-film to be formed in the desired part.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: August 28, 2018
    Assignee: Shibaura Institute of Technology
    Inventors: Tatsuhiko Aizawa, Hiroshi Morita, Shuichi Kurosumi
  • Publication number: 20140377472
    Abstract: [Problem] To provide a means for forming a thin-film in a desired part of an object to be treated. [Solution] The thin-film formation means according to the present invention is part of a thin-film formation method which supplies electricity to a raw-material gas in a reduced pressure container, converting the raw-material gas to plasma, and irradiates the plasma, thus forming a thin-film on the surface of an object to be treated. Therein, the effect of a magnetic field generated by a magnetic field generating means is used to form the thin-film in a desired part. The effect of the magnetic field focuses the flux of the plasma in a desired part of the surface of the object to be treated, thus enabling the thin-film to be formed in the desired part.
    Type: Application
    Filed: September 20, 2012
    Publication date: December 25, 2014
    Applicant: SHIBAURA INSTITUTE OF TECHNOLOGY
    Inventors: Tatsuhiko Aizawa, Hiroshi Morita, Shuichi Kurosumi
  • Publication number: 20070054146
    Abstract: Object: A high speed machining component, which has been improved in wear resistance and lubricating properties, and a high speed dry machining method using the component are provided. Particularly, a high speed cutting tool and a high speed cutting method are provided. Means for solution: A halogen element is ion-implanted into a machining component having a cemented carbide as a base material, and the machining component is contacted with a workpiece at a speed of 150 m/min or higher, whereby the wear resistance and lubricating properties of the component can be improved. If the machining component has a Ti-containing coating layer, its wear resistance and lubricating properties can be improved similarly. The use of a cutting tool including such a component enables high speed dry cutting without a cutting oil.
    Type: Application
    Filed: April 28, 2004
    Publication date: March 8, 2007
    Applicant: Tatsuhiko AIZAWA
    Inventors: Tatsuhiko Aizawa, Atsushi Mitsuo
  • Publication number: 20070009661
    Abstract: An aluminum material having, on the surface thereof, an AlN region which has enhanced film thickness, is uniform within the region and exhibits a high adhesion to a base material; and a method for producing the aluminum material, which comprises a step of providing an aluminum material comprising CuAl2, and a step of subjecting said aluminum material to plasma nitriding, to thereby form the aluminum nitride (AlN) region on the surface of the aluminum material.
    Type: Application
    Filed: January 26, 2004
    Publication date: January 11, 2007
    Applicant: RESEARCH INSTITUTE FOR APPLIED SCIENCES
    Inventors: Tatsuhiko Aizawa, Hideyuki Kuwahara
  • Publication number: 20050016638
    Abstract: The present invention provides a magnesium-base composite material capable of suppressing coarse growth of a crystal particle size of a magnesium matrix and Mg2Si particles, thereby providing excellent mechanical properties such as strength and hardness, and a manufacturing method thereof. The manufacturing method includes the steps of: blending matrix powder containing Mg and Si powder to obtain a blended matter; applying a plasticization treatment to the resulting blended matter to form a solid body; heating the solid body to allow Mg and Si to react with each other to form a heat solid body containing Mg2Si; and applying a warm plasticization treatment to the heat solid body. Thus, it is possible to provide a magnesium-base composite material having a tensile strength from not less than 100 MPa to not more than 500 MPa.
    Type: Application
    Filed: September 17, 2002
    Publication date: January 27, 2005
    Inventors: Katsuyoshi Kondoh, Tatsuhiko Aizawa, Hideki Oginuma, Fiji Yuasa
  • Patent number: 6163757
    Abstract: The characteristics of the wire are calculated, the wire having a cross-sectional shape which is substantially uniform along its length and having a length long enough in comparison with a diameter being deformed. The wire is divided into a plurality of elements with predetermined spacing along the length. When the wire is deformed, the shape of the wire after the deformation is determined. In the determined shape, a tangential stiffness equation using the element as a basis is calculated, and the calculated tangential stiffness equation is translated into a tangential stiffness equation using the whole of the wire as a basis. A global stiffness equation representing the whole wire is calculated from the tangential stiffness equation obtained by the translation. A load or a displacement produced in each portion of the wire is calculated from the global stiffness equation and the determined shape of the wire.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: December 19, 2000
    Assignee: Tokyo Rope Mfg. Co., Ltd.
    Inventors: Tatsuhiko Aizawa, Guilan Wang, Junji Kihara, Sinji Kurashige, Takuya Murakami
  • Patent number: 5569860
    Abstract: Optimum conditions for extrusion forging by using a powder material are determined by making a cylindrical billet out of the powder material, subjecting it to a deformation stress between plates to measure its strain as well as the time-rate of change in the strain, thereby determining parameters in the stress-strain formula, and carrying out a simulation analysis by an arbitrary Lagrangian-Eulerian method with an equation of motion obtained by the principle of virtual power. In considering the virtual power, bulk work is also taken into consideration. By such simulation analysis, data such as pressure distribution, speed distribution and density distribution are obtained. Optimum conditions are obtained by analyzing these data.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: October 29, 1996
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tatsuhiko Aizawa, Takeshi Inao