Patents by Inventor Michiharu Arifuku
Michiharu Arifuku 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).
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Publication number: 20190176439Abstract: There is provided a new infrared-shielding sheet that has been improved to a large extent in terms of transparency in the visible light region, radio-wave transparency, infrared shielding properties, production cost, and hue. The infrared-shielding sheet includes: a laminated film having high-refractive index resin layers containing fine particles and low-refractive index resin layers containing fine particles alternately laminated therein; and an infrared-absorbent pigment layer containing an infrared-absorbent pigment having a visible light transmittance of 70% or greater and a b* value in the L*a*b* color system of 10 or less, wherein for at least one layer of the low-refractive index resin layers, a value obtained by subtracting the refractive index at an arbitrary wavelength in the range of 780 nm to 2,500 nm from the refractive index at a wavelength of 550 nm is 0.Type: ApplicationFiled: May 31, 2017Publication date: June 13, 2019Inventors: Yukihiro Hara, Michiharu Arifuku, Shoko Ebihara, Akihiro Nohara
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Patent number: 9908306Abstract: An infrared shielding sheet includes a laminated film formed by alternately laminating a high refractive index resin layer containing fine particles and a low refractive index resin layer containing fine particles. At least one of the low refractive index resin layers has a value of 0.1 or more that is obtained by subtracting a refractive index at an arbitrary wavelength from 780 to 2500 nm from a refractive index at a wavelength of 550 nm. The low refractive index resin layer has a refractive index lower than a refractive index of the high refractive index resin layer at any wavelength in a range from 550 nm to the arbitrary wavelength inclusive.Type: GrantFiled: May 16, 2014Date of Patent: March 6, 2018Assignee: Nippon Kayaku KabushikiKaishaInventors: Yukihiro Hara, Michiharu Arifuku, Shoko Saito, Myeongjin Kang, Noriko Kiyoyanagi
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Publication number: 20170350856Abstract: A field effect transistor and a sensor using the field effect transistor is provided. The field effect transistor can be manufactured so as to have uniform properties by simple steps at low costs, and can stably detect, when used as a sensor, a very small amount of analyte with a high sensitivity while the properties are hardly deteriorated. A channel of the field effect transistor is constituted by a single-walled carbon nanotube thin film that is grown, by a chemical vapor deposition method, using particles of a nonmetallic material as growth nuclei, the nonmetallic material containing 500 mass ppm or less metallic impurities that contain a metal and its compounds.Type: ApplicationFiled: August 6, 2015Publication date: December 7, 2017Applicants: NIPPON KAYAKU KABUSHIKI KAISHA, OSAKA UNIVERSITYInventors: Yoshihiro KOBAYASHI, Ryota NEGISHI, Hiroto KASE, Michiharu ARIFUKU, Noriko KIYOYANAGI, Tomio MORINO
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Patent number: 9440855Abstract: Problem To provide a process for producing single-walled carbon nanotubes with which highly pure, high-quality single-walled carbon nanotubes can be produced with high efficiency, and to provide a transparent conductive film using the single-walled carbon nanotubes obtained by that production method. Solution A process for producing single-walled carbon nanotubes by chemical vapor deposition (CVD), wherein particles of a nonmetallic material containing 500 ppm or lower of metallic impurities including metals and compounds thereof are used as growth nuclei; and after a growth gas is introduced into a furnace used for growing carbon nanotubes, the growth gas used in an initial stage of growth of carbon nanotubes and the growth gas used in a stage of growth of regular carbon nanotubes (stationary growth stage) thereafter are prepared to different compositions and different partial pressures.Type: GrantFiled: February 12, 2013Date of Patent: September 13, 2016Assignees: Osaka University, Nippon Kayaku Kabushiki KaishaInventors: Yoshihiro Kobayashi, Ryota Negishi, Shoji Koriyama, Shogo Agata, Kazuki Fujimoto, Michiharu Arifuku, Masaki Shinmoto, Masahiro Imaizumi, Noriko Kiyoyanagi
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Publication number: 20160082697Abstract: An infrared shielding sheet includes a laminated film formed by alternately laminating a high refractive index resin layer containing fine particles and a low refractive index resin layer containing fine particles. At least one of the low refractive index resin layers has a value of 0.1 or more that is obtained by subtracting a refractive index at an arbitrary wavelength from 780 to 2500 nm from a refractive index at a wavelength of 550 nm. The low refractive index resin layer has a refractive index lower than a refractive index of the high refractive index resin layer at any wavelength in a range from 550 nm to the arbitrary wavelength inclusive.Type: ApplicationFiled: May 16, 2014Publication date: March 24, 2016Inventors: Yukihiro Hara, Michiharu Arifuku, Shoko Saito, Myeongjin Kang, Noriko Kiyoyanagi
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Publication number: 20150285972Abstract: The present invention relates to a heat-ray-shielding sheet that includes, on a support, a heat-ray-shielding layer including heat-shielding microparticles and a resin binder filling a void part. The microparticles are made of tin-doped indium oxide (ITO) or the like and have an average particle diameter of equal to or less than 100 nm, the reflectance in the heat-ray-shielding layer at a wavelength of at least 2,000 nm is at least 15%, and the surface resistivity in the heat-ray-shielding layer is equal to or more than 106?/?. Increasing the surface resistivity imparts a radio-wave-transmitting property, and causing longer-wavelength near-infrared light to be reflected boosts heat-ray-shielding efficiency while preventing thermal cracking and the like of a glass substrate. Additionally compounding the heat-ray-shielding layer with a near-infrared-absorbing dye, or disposing a reflecting layer in addition to the heat-ray-shielding layer allows the heat-ray shielding effect to be further improved.Type: ApplicationFiled: October 18, 2013Publication date: October 8, 2015Inventors: Yukihiro Hara, Takahiro Higeta, Michiharu Arifuku, Shoko Saito, Noriko Kiyoyanagi
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Patent number: 9133613Abstract: [Problem] The present invention relates to: a heat ray shielding adhesive which is used in bonding to a windowpane and the like and shields heat rays; a heat ray shielding transparent adhesive sheet; and a method for producing the heat ray shielding adhesive. The present invention provides a heat ray shielding transparent adhesive sheet which has high transmittance in the visible light region, low haze and more excellent transparency. [Solution] Transparency and heat ray shielding properties can be imparted in a simpler manner by using a heat ray shielding adhesive composition which contains fine heat ray shielding particles that have a half-value width of the first main peak of from 0.01° to 0.80° (inclusive) as determined by X-ray diffraction pattern, and a heat ray shielding transparent adhesive sheet is therefore able to be produced at low cost.Type: GrantFiled: September 10, 2012Date of Patent: September 15, 2015Assignee: Nippon Kayaku Kabushiki KaishaInventors: Chihiro Takahashi, Hideomi Sakai, Yukihiro Hara, Michiharu Arifuku
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Publication number: 20140361210Abstract: [Problem] The present invention relates to: a heat ray shielding adhesive which is used in bonding to a windowpane and the like and shields neat rays; a heat ray shielding transparent adhesive sheet; and a method for producing the heat ray shielding adhesive. The present invention provides a heat ray shielding transparent adhesive sheet which has nigh transmittance in the visible light region, low haze and more excellent transparency. [Solution] Transparency and heat ray shielding properties can be imparted in a simpler manner by using a heat ray shielding adhesive composition which contains fine heat ray shielding particles that have a half-value width of the first main peak of from. 0.01° to 0.80° (inclusive) as determined by X-ray diffraction pattern, and a heat ray shielding transparent adhesive sheet is therefore able to be produced at low cost.Type: ApplicationFiled: September 10, 2012Publication date: December 11, 2014Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Chihiro Takahashi, Hideomi Sakai, Yukihiro Hara, Michiharu Arifuku
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Publication number: 20140056800Abstract: Problem To provide a process for producing single-walled carbon nanotubes with which highly pure, high-quality single-walled carbon nanotubes can be produced with high efficiency, and to provide a transparent conductive film using the single-walled carbon nanotubes obtained by that production method. Solution A process for producing single-walled carbon nanotubes by chemical vapor deposition (CVD), wherein particles of a nonmetallic material containing 500 ppm or lower of metallic impurities including metals and compounds thereof are used as growth nuclei; and after a growth gas is introduced into a furnace used for growing carbon nanotubes, the growth gas used in an initial stage of growth of carbon nanotubes and the growth gas used in a stage of growth of regular carbon nanotubes (stationary growth stage) thereafter are prepared to different compositions and different partial pressures.Type: ApplicationFiled: February 12, 2013Publication date: February 27, 2014Applicants: NIPPON KAYAKU KABUSHIKI KAISHA, OSAKA UNIVERSITYInventors: Yoshihiro Kobayashi, Ryota Negishi, Shoji Koriyama, Shogo Agata, Kazuki Fujimoto, Michiharu Arifuku, Masaki Shinmoto, Masahiro Imaizumi, Noriko Kiyoyanagi
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Publication number: 20080190316Abstract: The present invention relates to an electric detonator containing no primary charge or igniting charge, having a simple structure, and capable of directly igniting a base charge of secondary explosive. A detonator of the present invention includes a cylindrical tube closed at one end, a base charge contained in the tube near the closed end thereof, and an ignition device inserted from an open end of the tube and accommodated near the open end. The ignition device is a semiconductor bridge device including a laminate layer and electrode pads. The laminate layer includes layers of a reactive metal and a reactive insulator. The base charge is, for example, pentaerythritol tetranitrate.Type: ApplicationFiled: November 8, 2005Publication date: August 14, 2008Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Yutaka Kagawa, Michiharu Arifuku, Shigeru Maeda, Hirotaka Mukunoki