Patents by Inventor Masakuni Takagi

Masakuni Takagi 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).

  • Publication number: 20240117126
    Abstract: A high filler-loaded thermally conductive thin sheet is obtained by uniformly dispersing a mixture containing organic polymer particles and highly thermally conductive filler particles using a pulverizer or a mixer to obtain a powder composition, conveying the powder composition at a constant thickness between two belts of a double belt press device, and continuously heating and pressurizing the powder composition at a temperature higher than or equal to a deflection temperature under load, melting point, or a glass transition temperature of the organic polymer and at a specific pressure and then cooling and solidifying the powder composition in the double belt press device.
    Type: Application
    Filed: February 15, 2022
    Publication date: April 11, 2024
    Inventors: Noriaki TAKAGI, Masakuni TAKAGI, Yuusuke NAGATANI, Daisuke WATANABE, Kazuo MATSUYAMA
  • Publication number: 20240092981
    Abstract: A problem of heat dissipation in motors, converters, high-luminance LEDs, power devices, power supplies, and the like becomes significant. Provided is a means for capable of providing a product, which has favorable workability, segregation stability, storage stability, and the like, penetrates into a gap in a coil portion, an interface in casing, and the like without any gaps, enhances thermal conductivity/heat dissipation properties of a molded product thus obtained, and is excellent in electrical characteristics, toughness/elastic modulus, thermal resistance, thermal cycle properties, and the like, in the case of using the product for a cast molding resin, a pottingmaterial (sealingmaterial), an adhesive, grease, and the like.
    Type: Application
    Filed: October 20, 2023
    Publication date: March 21, 2024
    Applicant: Takagi Chemicals, Inc.
    Inventors: Noriaki Takagi, Masakuni Takagi, Yuusuke Nagatani, Yuuta Terao, Daisuke Watanabe, Kazuo Matsuyama
  • Publication number: 20220379569
    Abstract: A method for manufacturing a fuel cell separator includes heating a sheet, pressing the sheet using a first die, thereby forming the sheet so as to have a predetermined thickness, cooling, together with the first die, the sheet that has been formed so as to have the predetermined thickness, and pressing the sheet that has undergone the cooling using a second die, thereby forming a gas passage in the sheet. In the sheet, a content of a thermoplastic resin is greater than or equal to 20 weight percent and less than or equal to 30 weight percent and a content of the carbon material particles is greater than or equal to 70 weight percent and less than or equal to 80 weight percent. The heating the sheet includes heating the sheet to a temperature that is higher than a melting point of the thermoplastic resin.
    Type: Application
    Filed: May 24, 2022
    Publication date: December 1, 2022
    Applicants: TOYOTA BOSHOKU KABUSHIKI KAISHA, TAKAGI CHEMICALS, INC.
    Inventors: Tatsuya NAGATA, Kazuyuki HIRATA, Yuki WAKIMOTO, Noriaki TAKAGI, Masakuni TAKAGI, Yuusuke NAGATANI, Daisuke WATANABE, Kazuo MATSUYAMA
  • Publication number: 20200062911
    Abstract: A filler-loaded thermal conductive liquid compositions formed by dispersing a powder composition, which contains polymer particles containing thermoplastic polymer particles, and thermal conductive filler particles containing particles having a graphite-like structure, obtained by pulverizing 5-70 parts by weight of the polymer particles and 30-95 parts by weight of the thermal conductive filler particles, the filler particles being covered with micronized polymer particles and the covered particles being uniformly dispersed, using 25-250 parts by weight of a liquid reactive dispersing medium and/or a dispersing medium containing a thermoplastic polymer having a deflection temperature under load or a melting point lower than the thermoplastic polymer used in the powder composition, and the liquid composition having conditions that a thermal conductive infinite cluster exhibiting a thermal conductivity of 1-35 w/mk is formed and a concentration of thermal conductive filler particles is equal to or more than a
    Type: Application
    Filed: September 27, 2018
    Publication date: February 27, 2020
    Applicant: Takagi Chemicals, Inc.
    Inventors: Noriaki Takagi, Masakuni Takagi, Yuusuke Nagatani, Yuuta Terao, Daisuke Watanabe, Kazuo Matsuyama
  • Patent number: 5159787
    Abstract: A method for lapping two surfaces of a titanium disk comprises inserting loosely a titanium disk to be lapped into an opening in a disk-type carrier, the carrier rotating and revolving between an upper surface plate and a lower surface plate which are held in parallel with each other and which applies lapping pressure to the titanium disk, feeding abrasives between the surface plates and the titanium disk and satisfying the following relationship between thickness t (mm) of the titanium disk and thickness T (mm) of the carrier:0.025 exp (t+1.5).ltoreq.T.ltoreq.0.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: November 3, 1992
    Assignee: NKK Corporation
    Inventors: Hiroyoshi Suenaga, Takeshi Ito, Masakuni Takagi, Hiroyoshi Takeuchi, Hideaki Fukai, Kuninori Minakawa
  • Patent number: 5136819
    Abstract: According to a mirror surface polishing process of the present invention, it is possible to produce Ti-made magnetic disc substrate which have the excellent flatness degree and surface roughness in that the average roughness is not more than 0.05 .mu.m and the flatness degree of the outer periphery is not more than 0.15 .mu.m.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: August 11, 1992
    Inventors: Masakuni Takagi, Hiroyoshi Takeuchi, Hideaki Fukai, Toshio Sakiyama, Hiroyoshi Suenaga, Kuninori Minakawa