Patents by Inventor Kennichi Fujita

Kennichi Fujita 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: 11884790
    Abstract: A near-infrared shielding ultrafine particle dispersion body, and others, having excellent near-infrared shielding function, low haze value and excellent design, with suppressed change in color tone during outdoor use and blue haze phenomenon, using near-infrared shielding ultrafine particles transparent in visible light range, having excellent near-infrared shielding properties, and produced with high productivity, and a near-infrared shielding ultrafine particle dispersion body in which ultra-fine particles having near-infrared shielding properties are dispersed in solid medium, wherein the ultrafine particles are composite tungsten oxide ultrafine particles represented by general formula MxWyOz, and have XRD peak top intensity ratio value of 0.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: January 30, 2024
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroshi Kobayashi, Kennichi Fujita, Hirofumi Tsunematsu, Takeshi Chonan
  • Publication number: 20200270401
    Abstract: A near-infrared shielding ultrafine particle dispersion body, and others, having excellent near-infrared shielding function, low haze value and excellent design, with suppressed change in color tone during outdoor use and blue haze phenomenon, using near-infrared shielding ultrafine particles transparent in visible light range, having excellent near-infrared shielding properties, and produced with high productivity, and a near-infrared shielding ultrafine particle dispersion body in which ultra-fine particles having near-infrared shielding properties are dispersed in solid medium, wherein the ultrafine particles are composite tungsten oxide ultrafine particles represented by general formula MxWyOz, and have XRD peak top intensity ratio value of 0.
    Type: Application
    Filed: May 17, 2018
    Publication date: August 27, 2020
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroshi KOBAYASHI, Kennichi FUJITA, Hirofumi TSUNEMATSU, Takeshi CHONAN
  • Patent number: 9074071
    Abstract: An object of the present invention is to provide a heat wave shielding material which can be manufactured by a simple method without using a complicated manufacturing method or a high cost physical film-formation method, maintains excellent visible light transmittancy, exhibits high heat wave shieldability, and, furthermore, is excellent in strength such as impact resistance. The heat wave shielding resin sheet which has a maximum transmittance in the visible light region and at the same time a minimum transmittance in the near-infrared region exhibiting strong absorption is realized by dispersing hexaboride fine particles such as LaB6 as a heat wave shielding component in polycarbonate resin or acrylic resin. ITO fine particles and/or ATO fine particles can be dispersed together with the hexaboride fine particles.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: July 7, 2015
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventor: Kennichi Fujita
  • Publication number: 20040131845
    Abstract: An object of the present invention is to provide a heat wave shielding material which can be manufactured by a simple method without using a complicated manufacturing method or a high cost physical film-formation method, maintains excellent visible light transmittancy, exhibits high heat wave shieldability, and, furthermore, is excellent in strength such as impact resistance. The heat wave shielding resin sheet which has a maximum transmittance in the visible light region and at the same time a minimum transmittance in the near-infrared region exhibiting strong absorption is realized by dispersing hexaboride fine particles such as LaB6 as a heat wave shielding component in polycarbonate resin or acrylic resin. ITO fine particles and/or ATO fine particles can be dispersed together with the hexaboride fine particles.
    Type: Application
    Filed: January 8, 2004
    Publication date: July 8, 2004
    Inventor: Kennichi Fujita
  • Patent number: 6569359
    Abstract: The object is to provide a transparent conductive layer forming coating liquid capable of forming a transparent conductive layer having such characteristics as high transmittance, low resistance, low reflectance and high strength and with few film defects. The transparent conductive layer forming coating liquid of the present invention is characterized in that it comprises, as its main components, a solvent and noble metal microparticles with a mean particle diameter of 1 to 100 nm dispersed in the solvent, and that the above-mentioned solvent comprises 0.005 to 1.0 wt % of formamide (HCONH2). Further, using this transparent conductive layer forming coating liquid, it is possible to form a conductive layer with developed meshy structures easily so that it can form transparent conductive layers having such characteristics as high transmittance, low resistance, low reflectance and high strength and with few film defects.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: May 27, 2003
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Masaya Yukinobu, Kennichi Fujita, Atsushi Tofuku, Kenji Kato
  • Patent number: 6399229
    Abstract: The present invention is directed to a light-transmitting color film comprising oxides which have high chemical resistance and excellent light-absorption effect, making them available in a wide color range; a method for producing the same; and a coating solution used for forming the color film. In the light-transmitting color film comprising an oxide of an element which serves as a network former and oxides of transition metal elements serving as coloring components, the element serving as a network former is at least one selected from Si, Al, and B, and the transition metal elements comprise Cu, Mn, and Ni; and the two types of oxides form a complex oxide.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: June 4, 2002
    Assignee: Nippon Sheet Glass Co., LTD
    Inventors: Hiromitsu Takeda, Kennichi Fujita, Taro Miyauchi, Toshifumi Tsujino, Tatsuya Noguchi, Hideki Okamoto, Takashi Muromachi
  • Publication number: 20020064661
    Abstract: The present invention is directed to a light-transmitting color film comprising oxides which have high chemical resistance and excellent light-absorption effect, making them available in a wide color range; a method for producing the same; and a coating solution used for forming the color film. In the light-transmitting color film comprising an oxide of an element which serves as a network former and oxides of transition metal elements serving as coloring components, the element serving as a network former is at least one selected from Si, Al, and B, and the transition metal elements comprise Cu, Mn, and Ni; and the two types of oxides form a complex oxide.
    Type: Application
    Filed: December 3, 2001
    Publication date: May 30, 2002
    Inventors: Hiromitsu Takeda, Kennichi Fujita, Taro Miyauchi, Toshifumi Tsujino, Tatsuya Noguchi, Hideki Okamoto, Takashi Muromachi
  • Publication number: 20020047108
    Abstract: The object is to provide a transparent conductive layer forming coating liquid capable of forming a transparent conductive layer having such characteristics as high transmittance, low resistance, low reflectance and high strength and with few film defects. The transparent conductive layer forming coating liquid of the present invention is characterized in that it comprises, as its main components, a solvent and noble metal microparticles with a mean particle diameter of 1 to 100 nm dispersed in the solvent, and that the above-mentioned solvent comprises 0.005 to 1.0 wt % of formamide (HCONH2). Further, using this transparent conductive layer forming coating liquid, it is possible to form a conductive layer with developed meshy structures easily so that it can form transparent conductive layers having such characteristics as high transmittance, low resistance, low reflectance and high strength and with few film defects.
    Type: Application
    Filed: July 24, 2001
    Publication date: April 25, 2002
    Applicant: Sumitomo Metal Mining Co., Ltd.
    Inventors: Masaya Yukinobu, Kennichi Fujita, Atsushi Tofuku, Kenji Kato