Patents by Inventor Hidefumi Kotsubo

Hidefumi Kotsubo 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: 10011146
    Abstract: A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are formed of a synthetic resin material having a bending modulus of elasticity obtained through a 3-point bending test pursuant to International Standard ISO 178 of 300 MPa or more, and a breaking strain obtained through a tension test pursuant to International Standard ISO 527-1 and 2 of 3% or more.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: July 3, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Hiroyuki Fudemoto, Ryuji Izumoto, Hidefumi Kotsubo
  • Patent number: 9623702
    Abstract: A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are integrally formed of a synthetic resin material having a bending modulus of elasticity obtained through a 3-point bending test pursuant to ISO 178 of more than 300 MPa and a deflection temperature under a load at 0.455 MPa obtained pursuant to ASTM D648 of 62° C. or more.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: April 18, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Hiroyuki Fudemoto, Ryuji Izumoto, Hidefumi Kotsubo
  • Patent number: 9511632
    Abstract: A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are integrally formed of a synthetic resin material having a bending modulus of elasticity at ?20° C. obtained through a 3-point bending test that is two times or less a bending modulus of elasticity at 60° C. obtained through the 3-point bending test pursuant to ISO 178.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: December 6, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Hiroyuki Fudemoto, Ryuji Izumoto, Hidefumi Kotsubo
  • Patent number: 9511631
    Abstract: A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are integrally formed of a synthetic resin material having a bending modulus of elasticity obtained through a 3-point bending test pursuant to ISO 178 of 300 MPa or more and a melting point of 120° C. or more and 350° C. or less.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: December 6, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Hiroyuki Fudemoto, Ryuji Izumoto, Hidefumi Kotsubo
  • Publication number: 20150273945
    Abstract: A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are integrally formed of a synthetic resin material having a bending modulus of elasticity obtained through a 3-point bending test pursuant to ISO 178 of 300 MPa or more and a Charpy impact value obtained at 23° C. through a Charpy impact test pursuant to ISO 179-1 of 5 kJ/m2 or more.
    Type: Application
    Filed: December 10, 2013
    Publication date: October 1, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Hiroyuki Fudemoto, Ryuji Izumoto, Hidefumi Kotsubo
  • Publication number: 20150273953
    Abstract: An object of the present invention is to provide: a rubber laminated body including a coating film which not only ensures decorativeness and visibility as desired but also exhibits good adhesion between a vulcanized rubber member and itself; and a tire using the rubber laminated body. In order to achieve the object, the present invention provides a rubber laminated body, comprising: a vulcanized rubber member; and a coating film provided to be attached to the vulcanized rubber member, wherein the coating film contains a polythiol compound.
    Type: Application
    Filed: November 5, 2013
    Publication date: October 1, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Hidefumi Kotsubo, Hiroyuki Kanesugi
  • Publication number: 20150273935
    Abstract: A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are integrally formed of a synthetic resin material having a bending modulus of elasticity obtained through a 3-point bending test pursuant to ISO 178 of more than 300 MPa and a deflection temperature under a load at 0.455 MPa obtained pursuant to ASTM D648 of 62° C. or more.
    Type: Application
    Filed: December 9, 2013
    Publication date: October 1, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Hiroyuki Fudemoto, Ryuji Izumoto, Hidefumi Kotsubo
  • Publication number: 20150258853
    Abstract: A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are integrally formed of a synthetic resin material having a bending modulus of elasticity at ?20° C. obtained through a 3-point bending test that is two times or less a bending modulus of elasticity at 60° C. obtained through the 3-point bending test pursuant to ISO 178.
    Type: Application
    Filed: December 11, 2013
    Publication date: September 17, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Hiroyuki Fudemoto, Ryuji Izumoto, Hidefumi Kotsubo
  • Publication number: 20150251492
    Abstract: A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are integrally formed of a synthetic resin material having a bending modulus of elasticity obtained through a 3-point bending test pursuant to ISO 178 of 300 MPa or more and a melting point of 120° C. or more and 350° C. or less.
    Type: Application
    Filed: December 11, 2013
    Publication date: September 10, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Hiroyuki Fudemoto, Ryuji Izumoto, Hidefumi Kotsubo
  • Publication number: 20150246577
    Abstract: A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are formed of a synthetic resin material having a bending modulus of elasticity obtained through a 3-point bending test pursuant to International Standard ISO 178 of 300 MPa or more, and a breaking strain obtained through a tension test pursuant to International Standard ISO 527-1 and 2 of 3% or more.
    Type: Application
    Filed: July 29, 2013
    Publication date: September 3, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Hiroyuki Fudemoto, Ryuji Izumoto, Hidefumi Kotsubo
  • Patent number: 8916335
    Abstract: A photo-curable transfer sheet having a photo-curable transfer layer comprising a photo-curable composition, the photo-curable composition being deformable by application of pressure and containing a reactive polymer having a photopolymerizable functional group, wherein the photo-curable transfer layer shows linearity in relationship between strain [?] (%) and time [t] (second) measured by a creep test using a dynamic viscoelasticity measuring apparatus under the conditions of an ordinary temperature, stress of 50 Pa and a time period of 120 seconds, and satisfies a following formula: log ?=a+b·log t, in which “a” is a real number, and “b” is in the range of 0.10 to 0.53; and a process for the preparation of an optical information recording medium using the sheet and an optical information recording medium.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: December 23, 2014
    Assignee: Bridgestone Corporation
    Inventors: Hideki Kitano, Takato Inamiya, Kenji Murayama, Hidefumi Kotsubo, Yasuhiro Morimura
  • Patent number: 8293459
    Abstract: The present invention provides a photo-curable transfer sheet by which an optical information recording medium (e.g., DVD) having small thickness and high capacity can be advantageously prepared, and which is improved in transferring property of pits and the like and curing property. The photo-curable transfer sheet has a photo-curable transfer layer comprising a photo-curable composition deformable by application of pressure, wherein the photo-curable composition comprises a polymer having a glass transition temperature of not less than 80° C. and a reactive diluent having a photopolymerizable functional group. The invention also provides a process for the preparation of an optical information recording medium using the sheet, and the optical information recording medium.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: October 23, 2012
    Assignee: Bridgestone Corporation
    Inventors: Takato Inamiya, Hidefumi Kotsubo, Hideki Kitano, Kenji Murayama
  • Patent number: 8067084
    Abstract: An electromagnetic-wave shielding and light transmitting plate 1 comprising an antireflection film 3, an electromagnetic-wave shielding film 10, a transparent substrate 2, and a near-infrared ray blocking film 5, wherein they are laminated and united by using intermediate adhesive layers 4A, 4B and a pressure-sensitive adhesive 4C, and the peripheries thereof are covered by a conductive sticky tape 7. The electromagnetic-wave shielding film 10 has a conductive foil 11 formed by pattern etching on a substrate film 13, is processed to have antireflection function by forming a light absorbing layer 12 on the conductive foil 11, and is subjected to a matting process to form small irregularities by roughening the surface of the light absorbing layer 12. A display panel is manufactured by bonding this electromagnetic-wave shielding film 10 to the front surface of a plasma display panel body.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: November 29, 2011
    Assignee: Bridgestone Corporation
    Inventors: Masato Yoshikawa, Tetsuo Kitano, Taichi Kobayashi, Hidefumi Kotsubo
  • Publication number: 20110262675
    Abstract: The present invention provides a photo-curable transfer sheet by which an optical information recording medium having small thickness and high capacity can be advantageously prepared, the photo-curable transfer layer of the sheet cured in the production of the optical information recording medium having excellent adhesion to the reflective layer such silver alloy and easy peeling property from the stamper to easily bring about the transfer layer having an uneven surface such as pits, etc accurately formed along an uneven surface of the stamper. The photo-curable transfer sheet has a photo-curable transfer layer comprising a photo-curable composition deformable by application of pressure, wherein the photo-curable composition comprises a polymer and a reactive diluent having a photopolymerizable functional group, and the reactive diluent has at least one hydroxyl group and an acryloyl group and/or methacryloyl group, the total of acryloyl group and/or methacryloyl group being at least two.
    Type: Application
    Filed: August 31, 2006
    Publication date: October 27, 2011
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takato Inamiya, Hideki Kitano, Hidefumi Kotsubo, Kenji Murayama
  • Patent number: 7931518
    Abstract: The present invention provides a process for preparing a light transmissive electromagnetic wave shielding material having an excellent light transmissive property, an excellent electromagnetic wave shielding property, an excellent appearance property and an excellent legibility by a simple method. A process for the preparation of a light transmissive electromagnetic wave shielding material comprising; (A1) printing a pretreatment agent for electroless plating comprising a noble metal compound and a mixture of silane coupling agent and azole compound or a reaction product thereof in a mesh pattern on a transparent substrate 11 to form a mesh-patterned pretreatment layer 12, and (A2) subjecting the pretreatment layer 12 to electroless plating to form a mesh-patterned metal conductive layer 13 on the pretreatment layer 12.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: April 26, 2011
    Assignee: Bridgestone Corporation
    Inventors: Hidefumi Kotsubo, Tatsuya Funaki, Kiyomi Sasaki
  • Patent number: 7799404
    Abstract: A photo-curable transfer sheet having a photo-curable layer comprising a photo-curable composition, the photo-curable composition being deformable by application of pressure and containing a reactive polymer having a photopolymerizable functional group. The photo-curable transfer sheet preferably has a light transmittance of not less than 70% in a wavelength rang of 380 to 420 nm. An optical information recording substrate and medium prepared by the sheet. The sheet easily and precisely enables transfer of unevenness of the surface of a stamper by pressing.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: September 21, 2010
    Assignee: Bridgestone Corporation
    Inventors: Hideki Kitano, Hidefumi Kotsubo, Takato Inamiya
  • Publication number: 20100178467
    Abstract: The present invention provides a photo-curable transfer sheet by which an optical information recording medium (e.g., DVD) having small thickness and high capacity can be advantageously prepared, and which is improved in transferring property of pits and the like and curing property. The photo-curable transfer sheet has a photo-curable transfer layer comprising a photo-curable composition deformable by application of pressure, wherein the photo-curable composition comprises a polymer having a glass transition temperature of not less than 80° C. and a reactive diluent having a photopolymerizable functional group. The invention also provides a process for the preparation of an optical information recording medium using the sheet, and the optical information recording medium.
    Type: Application
    Filed: September 14, 2006
    Publication date: July 15, 2010
    Applicant: Bridgestone Corporation
    Inventors: Takato Inamiya, Hidefumi Kotsubo, Hideki Kitano, Kenji Murayama
  • Publication number: 20100126767
    Abstract: The present invention provides a process for efficiently preparing a light transmissive electromagnetic wave shielding material enhanced in light transmissive property, electromagnetic wave shielding property, appearance and legibility, and having high-accuracy mesh-pattern. The process for the preparation of a light transmissive electromagnetic wave shielding material comprising; printing in the form of mesh a pretreatment agent for electroless plating on a transparent substrate to form a mesh-shaped pretreatment layer, the pretreatment agent comprising a fine particle having an extremely-thin film of noble metal on its surface, and subjecting the mesh-shaped pretreatment layer to electroless plating to form a mesh-shaped metal conductive layer on the pretreatment layer.
    Type: Application
    Filed: March 5, 2008
    Publication date: May 27, 2010
    Applicant: Bridgestone Corporation
    Inventors: Hidefumi Kotsubo, Tatsuya Funaki, Kiyomi Sasaki, Kentaro Hanzawa
  • Publication number: 20100003474
    Abstract: The present invention provides a process for preparing a light transmissive electromagnetic wave shielding material having an excellent light transmissive property, an excellent electromagnetic wave shielding property, an excellent appearance property and an excellent legibility by a simple method. A process for the preparation of a light transmissive electromagnetic wave shielding material comprising; (A1) printing a pretreatment agent for electroless plating comprising a noble metal compound and a mixture of silane coupling agent and azole compound or a reaction product thereof in a mesh pattern on a transparent substrate 11 to form a mesh-patterned pretreatment layer 12, and (A2) subjecting the pretreatment layer 12 to electroless plating to form a mesh-patterned metal conductive layer 13 on the pretreatment layer 12.
    Type: Application
    Filed: August 3, 2007
    Publication date: January 7, 2010
    Applicant: Bridgestone Corporation
    Inventors: Hidefumi Kotsubo, Tatsuya Funaki, Kiyomi Sasaki
  • Patent number: 7611746
    Abstract: A method for producing an electromagnetic-wave-shielding light-transmitting window member comprising a transparent substrate and a conductive pattern formed by electroless plating on a surface of the transparent substrate. In the method, an ultraviolet-curable resin paste containing an electroless plating catalyst is applied to a surface of a transparent substrate, and the resulting printed pattern is cured by irradiation of ultraviolet light to form a resin pattern. Subsequently, a plating layer is deposited on the resin pattern by electroless plating treatment to form a conductive pattern. The ultraviolet-curable resin paste is selected from a group of sublimable resists and phthalocyanine-based sublimable materials and contains a volatile substance that is volatized by heating or irradiation. By using the ultraviolet-curable resin paste, a good conductive pattern having excellent adhesion to the transparent substrate can be formed with high accuracy, efficiently, and at low cost.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: November 3, 2009
    Assignee: Bridgestone Corporation
    Inventors: Tatsuya Funaki, Hidefumi Kotsubo, Kiyomi Sasaki