Patents by Inventor Kazuyuki Yahara

Kazuyuki Yahara 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: 11459443
    Abstract: Provided is a resin material capable of effectively enhancing insulation properties, adhesiveness and long-term insulation reliability. The resin material according to the present invention contains first inorganic particles having an average aspect ratio of 2 or less and an average circularity of 0.90 or less, second inorganic particles having an average aspect ratio of 2 or less and an average circularity of 0.95 or more, third inorganic particles having an average aspect ratio of more than 2, and a binder resin.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: October 4, 2022
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yuko Kawahara, Keigo Oowashi, Kouji Ashiba, Rui Zhang, Kazuyuki Yahara, Osamu Inui, Hiroshi Maenaka
  • Publication number: 20220242095
    Abstract: The resin composition of the present invention comprises a polyvinyl acetal resin (A) and an acrylic-based polymer (B), in which the acrylic-based polymer (B) is a polymer of a monomer component comprising an acrylic-based monomer, a dHSP/R of the monomer component relative to the polyvinyl acetal resin (A) is 1.16 or less, and a content of the acrylic-based polymer (B) is 20 parts by mass or more and 90 parts by mass or less based on 100 parts by mass of the polyvinyl acetal resin (A).
    Type: Application
    Filed: June 9, 2020
    Publication date: August 4, 2022
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yuji OOHIGASHI, Yui HIGASHIONNA, Kazuyuki YAHARA, Juichi FUKATANI
  • Publication number: 20220007553
    Abstract: A conductive nonwoven fabric comprising a metal layer on at least one surface thereof, the conductive nonwoven fabric having a sheet resistance of 200 to 600 ?/? and a density of 2.0×104 to 8.×105 g/m3. The conductive nonwoven fabric has higher radio wave absorption properties (high absorption and low reflectivity), even against high-frequency radio waves.
    Type: Application
    Filed: November 28, 2019
    Publication date: January 6, 2022
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Takefumi KOYAMA, Katsunori MUTOU, Sachiko NAKAO, Kazuyuki YAHARA
  • Patent number: 11174331
    Abstract: A shock-absorbing sheet comprises a foamed resin layer having a thickness of 200 ?m or less, a void ratio (P0.1) of a plane directional cross section at a thickness of 0.1 T, a void ratio (P0.5) of a plane directional cross section at a thickness of 0.5 T, and a void ratio (P0.9) of a plane directional cross section at a thickness of 0.9 T from one surface of the foamed resin layer each ranging from 10 to 70 area %; and the standard deviation (P?) for an average void ratio found from the void ratio (P0.1), the void ratio (P0.5) and the void ratio (P0.9) ranging from 1.0 to 20.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: November 16, 2021
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Koji Yachi, Hiroshi Hiraike, Yuuki Hoshiyama, Izumi Okamura, Yasuharu Nagai, Kazuyuki Yahara, Ayaha Oguri
  • Publication number: 20210261737
    Abstract: A thermally conductive sheet 10 of the present invention comprises a polymer matrix 12 and an anisotropic filler 13, and the anisotropic filler 13 is oriented in a thickness direction. The anisotropic filler 13 is disposed in such a way as to fall down in a proportion of 1 to 45% in the vicinity of surfaces 10A, 10B of the thermally conductive sheet 10. According to the present invention, a thermally conductive sheet capable of sufficiently improving the thermal conductive properties in the thickness direction can be provided.
    Type: Application
    Filed: June 18, 2019
    Publication date: August 26, 2021
    Applicant: SEKISUI POLYMATECH CO., LTD.
    Inventors: Hiroki KUDOH, Taku SASAKI, Kana HATTORI, Kazuyuki YAHARA, Yasunari KUSAKA
  • Publication number: 20210189032
    Abstract: A shock-absorbing sheet comprises a foamed resin layer having a thickness of 200 ?m or less, a void ratio (P0.1) of a plane directional cross section at a thickness of 0.1 T, a void ratio (P0.5) of a plane directional cross section at a thickness of 0.5 T, and a void ratio (P0.9) of a plane directional cross section at a thickness of 0.9 T from one surface of the foamed resin layer each ranging from 10 to 70 area %; and the standard deviation (P?) for an average void ratio found from the void ratio (P0.1), the void ratio (P0.5) and the void ratio (P0.9) ranging from 1.0 to 20.
    Type: Application
    Filed: September 28, 2018
    Publication date: June 24, 2021
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Koji YACHI, Hiroshi HIRAIKE, Yuuki HOSHIYAMA, Izumi OKAMURA, Yasuharu NAGAI, Kazuyuki YAHARA, Ayaha OGURI
  • Publication number: 20210130570
    Abstract: A thermally conductive sheet 10 comprises a polymer matrix 12 and an anisotropic filler 13, and the anisotropic filler 13 is oriented in a thickness direction. The anisotropic filler 13 is exposed on the surfaces 10A, 10B of the thermally conductive sheet 10, and the anisotropic filler 13 which is exposed is disposed in such a way as to fall down in a proportion of 3.5 to 45%.
    Type: Application
    Filed: June 18, 2019
    Publication date: May 6, 2021
    Applicant: SEKISUI POLYMATECH CO., LTD.
    Inventors: Hiroki KUDOH, Taku SASAKI, Kana HATTORI, Kazuyuki YAHARA, Yasunari KUSAKA
  • Publication number: 20200181358
    Abstract: Provided is a resin material capable of effectively enhancing insulation properties, adhesiveness and long-term insulation reliability. The resin material according to the present invention contains first inorganic particles having an average aspect ratio of 2 or less and an average circularity of 0.90 or less, second inorganic particles having an average aspect ratio of 2 or less and an average circularity of 0.95 or more, third inorganic particles having an average aspect ratio of more than 2, and a binder resin.
    Type: Application
    Filed: June 21, 2018
    Publication date: June 11, 2020
    Inventors: Yuko Kawahara, Keigo Oowashi, Kouji Ashiba, Rui Zhang, Kazuyuki Yahara, Osamu Inui, Hiroshi Maenaka
  • Patent number: 9416242
    Abstract: The foamable composition according to the present invention comprises a copolymer of ethylene, an ?-olefin and a non-conjugated diene, a blowing agent, a crosslinking agent, a catalyst and a reaction suppressor, wherein in the foamable composition, the storage elastic modulus at 23° C. as measured by a viscoelasticity measuring apparatus is 2×104 Pa or lower, and the storage elastic modulus after the foamable composition is held at 115° C. for 200 seconds is 5×104 Pa or higher; thereby, a foam body having a low expansion ratio, a low compression strength and a high cushioning property can be produced.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: August 16, 2016
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kazuyuki Yahara, Yozo Toei, Yuji Tanikawa, Masahiro Hamada, Akihito Dohi
  • Publication number: 20150203648
    Abstract: The foamable composition according to the present invention comprises a copolymer of ethylene, an ?-olefin and a non-conjugated diene, a blowing agent, a crosslinking agent, a catalyst and a reaction suppressor, wherein in the foamable composition, the storage elastic modulus at 23° C. as measured by a viscoelasticity measuring apparatus is 2×104 Pa or lower, and the storage elastic modulus after the foamable composition is held at 115° C. for 200 seconds is 5×104 Pa or higher; thereby, a foam body having a low expansion ratio, a low compression strength and a high cushioning property can be produced.
    Type: Application
    Filed: September 27, 2013
    Publication date: July 23, 2015
    Applicant: SEKISUI CHEMICAL CO., LTD/
    Inventors: Kazuyuki Yahara, Yozo Toei, Yuji Tanikawa, Masahiro Hamada, Akihito Dohi
  • Publication number: 20150064435
    Abstract: Provided is a porous body, which is formed of a resin obtained by crosslinking a copolymer of ethylene, an ?-olefin, and a non-conjugated diene, wherein porosity of the porous body is in the range of 50 to 95% by volume, strength of the porous body at 50% compression is 300 kPa or less, and compression set (A) under atmosphere at a temperature of 80° C. and a relative humidity of 90% is 20% or less.
    Type: Application
    Filed: March 28, 2013
    Publication date: March 5, 2015
    Inventors: Kazuyuki Yahara, Yozo Toei, Akihito Dohi, Yuji Tanikawa
  • Patent number: 7715083
    Abstract: The present invention aims to provide a light control material capable of optionally controlling the light transmittance in an arbitrary wavelength range among a wide wavelength range, and a light control film formed by using the light control material.
    Type: Grant
    Filed: November 24, 2006
    Date of Patent: May 11, 2010
    Assignees: Sekisui Chemical Co., Ltd., National Institute of Advanced Industrial Science and Technology
    Inventors: Kazuyuki Yahara, Kenji Tsuchihara
  • Publication number: 20090080056
    Abstract: The present invention aims to provide a light control material capable of optionally controlling the light transmittance in an arbitrary wavelength range among a wide wavelength range, and a light control film formed by using the light control material.
    Type: Application
    Filed: November 24, 2006
    Publication date: March 26, 2009
    Inventors: Kazuyuki Yahara, Kenji Tsuchihara
  • Patent number: 6958184
    Abstract: A fire-resistant sheet-like molded article comprising a resin composition and having the relationship between the initial thickness t (mm) and temperature difference ?T(° C.) between one side and the reverse side after heating of said one side at 500° C. for 1 hour as represented by: ?T?0.015t4?0.298t3+1.566t2+30.151t, and having the initial bulk density at 25° C. of 0.8 to 8.0 g/cm3 and the bulk density after 1 hour of heating at 500° C. of 0.05 to 0.5 g/cm3 is provided along with a method of fabricating a fire-resistant structural steel and fire-resistant wall.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: October 25, 2005
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Masaki Tono, Bunji Yamaguchi, Kazuyuki Yahara, Hitomi Muraoka, Norio Numata
  • Publication number: 20030008119
    Abstract: A fire-resistant sheet-like molded article comprising a resin composition and having the relationship between the initial thickness t (mm) and temperature difference &Dgr;T(° C.) between one side and the reverse side after heating of said one side at 500° C.
    Type: Application
    Filed: April 2, 2002
    Publication date: January 9, 2003
    Inventors: Masaki Tono, Bunji Yamaguchi, Kazuyuki Yahara, Hitomi Muraoka, Norio Numata
  • Patent number: 6410122
    Abstract: A fire-resistant sheet-like molded article having flame resistance and capable of producing good fire-resisting properties as the result of residues after combustion having sufficient shape-retaining property and, further, having good workability, a fire-resistant laminate for covering structural steels and a fire-resistant structural material for walls in which said molded article is used as well as a method of fabricating a fire-resistant structural steel and a fire-resistant wall. A fire resistant sheet-like molded article comprising a resin composition and having the-relationship between the initial thickness t (mm) and temperature difference &Dgr;T (° C.) between one side and the reverse side after heating of said one side at 500° C. for 1 hour as represented by: &Dgr;T≧0.015t4−0.298t3+1.566t2+30.151t, and having the initial bulk density at 25° C. of 0.8 to 2.0 g/cm3 and the bulk density after 1 hour of heating at 500° C. of 0.05 to 0.5 g/cm3.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: June 25, 2002
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Masaki Tono, Bunji Yamaguchi, Kazuyuki Yahara, Hitomi Muraoka, Norio Numata