Patents by Inventor Hirofumi Kitano

Hirofumi Kitano 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: 10954356
    Abstract: Provided is an interlayer film for laminated glass which has high heat shielding properties, a high visible transmittance, and excellent light resistance which enables retention of the high visible transmittance for a long period of time. The interlayer film for laminated glass according to the present invention has an interlayer film for laminated glass with a single layer structure or a laminated structure of two or more layers, the interlayer film for laminated glass according to the present invention comprises a first layer, and the first layer contains a polyvinyl acetal resin; a plasticizer; a tungsten oxide particle; a magnesium salt of an organic acid having a branched structure; and a metal salt of a C2 to C8 organic acid, other than the magnesium salt of an organic acid having a branched structure.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: March 23, 2021
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hirofumi Kitano, Juichi Fukatani, Daizou Ii, Ryuta Tsunoda
  • Patent number: 10870254
    Abstract: The present invention is an interlayer film for laminated glass that includes 2 or more resin layers laminated on each other. The interlayer film for laminated glass has a large number of recesses and a large number of protrusions on at least one surface thereof. The recesses each have a groove shape with a continuous bottom. The recesses adjacent to each other are parallel to each other and regularly arranged in a line.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: December 22, 2020
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hirofumi Kitano, Hiroaki Inui, Taiki Katayama, Manabu Matsumoto, Kazuhiko Nakayama
  • Patent number: 10744744
    Abstract: The present invention aims to provide an interlayer film for a laminated glass which includes two or more resin layers laminated together and which has excellent deaeration properties in the manufacturing process of a laminated glass and prevents ghosting. The present invention also aims to provide a laminated glass comprising the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass which includes two or more resin layers laminated together and has many minute recesses and many minute protrusions on at least one surface thereof. The recesses have a groove shape with a continuous bottom. The recesses are formed in a regular manner, and recesses adjacent to each other being parallel. Recesses adjacent to each other are spaced less than 750 ?m.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: August 18, 2020
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hirofumi Kitano, Taiki Katayama
  • Publication number: 20200223172
    Abstract: The present invention aims to provide a vehicular windshield having a laminated glass structure in which an interlayer film for laminated glass is interposed between at least a pair of glass plates, which contains few air bubbles remaining between the glass plates and the interlayer film for laminated glass to have an excellent appearance and is less likely to cause ghosting when external rays of light are seen through the vehicular windshield.
    Type: Application
    Filed: March 16, 2020
    Publication date: July 16, 2020
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hirofumi KITANO, Manabu MATSUMOTO, Kazuhiko NAKAYAMA
  • Patent number: 10632712
    Abstract: The present invention aims to provide a vehicular windshield having a laminated glass structure in which an interlayer film for laminated glass is interposed between at least a pair of glass plates, which contains few air bubbles remaining between the glass plates and the interlayer film for laminated glass to have an excellent appearance and is less likely to cause ghosting when external rays of light are seen through the vehicular windshield.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: April 28, 2020
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hirofumi Kitano, Manabu Matsumoto, Kazuhiko Nakayama
  • Patent number: 10471686
    Abstract: The present invention aims to provide an interlayer film for a laminated glass capable of exhibiting high deaeration properties even in a nip roll method and hardly forming air bubbles to enable the production of a highly visible laminated glass, and a laminated glass including the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, having a large number of recesses and a large number of projections on at least one surface, the recesses each having a groove shape with a continuous bottom and being regularly adjacent to each other in parallel with one another, the recesses each having a groove shape with a continuous bottom having a ratio (R/Sm×100) of a radius of rotation R of the bottom to an interval Sm between the recesses of 15% or higher.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: November 12, 2019
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kazuhiko Nakayama, Hiroaki Inui, Hirofumi Kitano
  • Patent number: 9969145
    Abstract: The present invention aims to provide an interlayer film for an automotive windshield which, while having recesses in the shape of engraved lines, enables the production of automotive windshields with high yield by a vacuum deaeration method; a roll of the interlayer film for an automotive windshield; and an automotive windshield including the interlayer film for an automotive windshield. The present invention relates to an interlayer film for an automotive windshield. The interlayer film includes, on at least one surface thereof, a large number of recesses and a large number of projections. The recesses have a groove shape with a continuous bottom. The recesses are adjacently arranged regularly side by side in parallel with one another. The recesses in a groove shape with a continuous bottom are inclined 35° or more relative to the machine direction of the film in production of the interlayer film for an automotive windshield.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: May 15, 2018
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kazuhiko Nakayama, Hiroaki Inui, Hirofumi Kitano
  • Publication number: 20180037711
    Abstract: Provided is an interlayer film for laminated glass which has high heat shielding properties, a high visible transmittance, and excellent light resistance which enables retention of the high visible transmittance for a long period of time. The interlayer film for laminated glass according to the present invention has an interlayer film for laminated glass with a single layer structure or a laminated structure of two or more layers, the interlayer film for laminated glass according to the present invention comprises a first layer, and the first layer contains a polyvinyl acetal resin; a plasticizer; a tungsten oxide particle; a magnesium salt of an organic acid having a branched structure; and a metal salt of a C2 to C8 organic acid, other than the magnesium salt of an organic acid having a branched structure.
    Type: Application
    Filed: October 3, 2017
    Publication date: February 8, 2018
    Inventors: Hirofumi Kitano, Juichi Fukatani, Daizou Ii, Ryuta Tsunoda
  • Patent number: 9796825
    Abstract: Provided is an interlayer film for laminated glass which has high heat shielding properties, a high visible transmittance, and excellent light resistance which enables retention of the high visible transmittance for a long period of time. The interlayer film for laminated glass according to the present invention has an interlayer film for laminated glass with a single layer structure or a laminated structure of two or more layers, the interlayer film for laminated glass according to the present invention comprises a first layer, and the first layer contains a polyvinyl acetal resin; a plasticizer; a tungsten oxide particle; a magnesium salt of an organic acid having a branched structure; and a metal salt of a C2 to C8 organic acid, other than the magnesium salt of an organic acid having a branched structure.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: October 24, 2017
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hirofumi Kitano, Juichi Fukatani, Daizou Ii, Ryuta Tsunoda
  • Publication number: 20170217122
    Abstract: The present invention aims to provide an interlayer film for a laminated glass capable of exhibiting high deaeration properties in a vacuum deaeration method and enabling production of a highly transparent laminated glass, and a laminated glass including the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, having a large number of recesses on at least one surface, the recesses each having a groove shape with a continuous bottom and being regularly adjacent and parallel to each other, the recesses each having a radius of rotation R of a bottom of the groove shape with a continuous bottom of 45 ?m or less.
    Type: Application
    Filed: October 13, 2015
    Publication date: August 3, 2017
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kazuhiko NAKAYAMA, Hiroaki INUI, Hirofumi KITANO
  • Publication number: 20170203536
    Abstract: The present invention aims to provide an interlayer film for a laminated glass which can be stored in a stacked state without experiencing autohesion so as to be easily peelable, and a laminated glass including the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, having a large number of recesses and a large number of projections on a first surface and a second surface opposite to the first surface, the recesses on the first surface and the second surface each having a groove shape with a continuous bottom and being regularly adjacent and parallel to each other, the interlayer film for a laminated glass satisfying Formulae (1) and (2): ??10°??(1), R/Sm?0.
    Type: Application
    Filed: September 30, 2015
    Publication date: July 20, 2017
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kazuhiko NAKAYAMA, Yuusuke OOTA, Hirofumi KITANO, Hiroaki INUI
  • Publication number: 20170157898
    Abstract: The present invention aims to provide an interlayer film for a laminated glass capable of exhibiting high deaeration properties even in a nip roll method and hardly forming air bubbles to enable the production of a highly visible laminated glass, and a laminated glass including the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, having a large number of recesses and a large number of projections on at least one surface, the recesses each having a groove shape with a continuous bottom and being regularly adjacent to each other in parallel with one another, the recesses each having a groove shape with a continuous bottom having a ratio (R/Sm×100) of a radius of rotation R of the bottom to an interval Sm between the recesses of 15% or higher.
    Type: Application
    Filed: September 30, 2015
    Publication date: June 8, 2017
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kazuhiko NAKAYAMA, Hiroaki INUI, Hirofumi KITANO
  • Publication number: 20170008257
    Abstract: The present invention aims to provide an interlayer film for laminated glass which, while having recesses in the shape of engraved lines, enables the production of a laminated glass with high production efficiency by a nip roll method; a roll of the interlayer film for laminated glass; a laminated glass including the interlayer film for laminated glass; and a method of producing laminated glass. The present invention relates to an interlayer film for laminated glass. The interlayer film includes, on at least one surface thereof, a large number of recesses and a large number of projections. The recesses have a groove shape with a continuous bottom. The recesses are adjacently arranged regularly side by side in parallel with one another. The recesses in a groove shape with a continuous bottom are inclined 55° or less relative to the machine direction of the film in production of the interlayer film for laminated glass.
    Type: Application
    Filed: April 9, 2015
    Publication date: January 12, 2017
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kazuhiko NAKAYAMA, Hiroaki INUI, Hirofumi KITANO
  • Publication number: 20160318278
    Abstract: The present invention aims to provide an interlayer film for an automotive windshield which, while having recesses in the shape of engraved lines, enables the production of automotive windshields with high yield by a vacuum deaeration method; a roll of the interlayer film for an automotive windshield; and an automotive windshield including the interlayer film for an automotive windshield. The present invention relates to an interlayer film for an automotive windshield. The interlayer film includes, on at least one surface thereof, a large number of recesses and a large number of projections. The recesses have a groove shape with a continuous bottom. The recesses are adjacently arranged regularly side by side in parallel with one another. The recesses in a groove shape with a continuous bottom are inclined 35° or more relative to the machine direction of the film in production of the interlayer film for an automotive windshield.
    Type: Application
    Filed: April 9, 2015
    Publication date: November 3, 2016
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kazuhiko NAKAYAMA, Hiroaki INUI, Hirofumi KITANO
  • Publication number: 20160151996
    Abstract: The present invention aims to provide a vehicular windshield having a laminated glass structure in which an interlayer film for laminated glass is interposed between at least a pair of glass plates, which contains few air bubbles remaining between the glass plates and the interlayer film for laminated glass to have an excellent appearance and is less likely to cause ghosting when external rays of light are seen through the vehicular windshield.
    Type: Application
    Filed: August 1, 2014
    Publication date: June 2, 2016
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hirofumi KITANO, Manabu MATSUMOTO, Kazuhiko NAKAYAMA
  • Publication number: 20160151995
    Abstract: The present invention is an interlayer film for laminated glass that includes 2 or more resin layers laminated on each other. The interlayer film for laminated glass has a large number of recesses and a large number of protrusions on at least one surface thereof. The recesses each have a groove shape with a continuous bottom. The recesses adjacent to each other are parallel to each other and regularly arranged in a line.
    Type: Application
    Filed: August 1, 2014
    Publication date: June 2, 2016
    Applicant: Sekisui Chemical Co., Ltd.
    Inventors: Hirofumi KITANO, Hiroaki INUI, Taiki KATAYAMA, Manabu MATSUMOTO, Kazuhiko NAKAYAMA
  • Publication number: 20160129674
    Abstract: The present invention aims to provide an interlayer film for laminated glass including two or more resin layers laminated together which exhibits excellent deaeration properties in the production process of a laminated glass and prevents ghosting, and a laminated glass including the interlayer film for laminated glass.
    Type: Application
    Filed: August 1, 2014
    Publication date: May 12, 2016
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hirofumi KITANO, Manabu MATSUMOTO, Kazuhiko NAKAYAMA
  • Publication number: 20160101602
    Abstract: The present invention aims to provide an interlayer film for laminated glass including two or more resin layers laminated together which exhibits excellent deaeration properties in the production process of a laminated glass and prevents ghosting, and a laminated glass including the interlayer film for laminated glass. The present invention relates to an interlayer film for laminated glass including at least two resin layers laminated together, the interlayer film having a large number of recesses and a large number of projections on at least one surface, the recesses having a groove shape with a continuous bottom and being regularly arranged adjacently in parallel with one another, the surface with the large number of recesses and the large number of projections having a groove depth (Rzg) of the recesses determined in conformity with JIS B-0601(1994) of 10 to 40 ?m, the recesses each having an interval from an adjacent recess of 1000 to 1500 ?m.
    Type: Application
    Filed: August 1, 2014
    Publication date: April 14, 2016
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hirofumi KITANO, Manabu MATSUMOTO, Kazuhiko NAKAYAMA
  • Publication number: 20150174862
    Abstract: The present invention aims to provide an interlayer film for a laminated glass which includes two or more resin layers laminated together and which has excellent deaeration properties in the manufacturing process of a laminated glass and prevents ghosting. The present invention also aims to provide a laminated glass comprising the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass which includes two or more resin layers laminated together and has many minute recesses and many minute protrusions on at least one surface thereof. The recesses have a groove shape with a continuous bottom. The recesses are formed in a regular manner, and recesses adjacent to each other being parallel. Recesses adjacent to each other are spaced less than 750 ?m.
    Type: Application
    Filed: August 2, 2013
    Publication date: June 25, 2015
    Inventors: Hirofumi Kitano, Taiki Katayama
  • Publication number: 20140193646
    Abstract: The present invention provides an interlayer film for laminated glass which enables production of laminated glass having a high visible transmittance and excellent heat-shielding properties, and enables the laminated glass to retain the high visible transmittance for a long period of time; and provides laminated glass including the interlayer film. An interlayer film for laminated glass according to the present invention includes a first heat-shielding layer and at least one second heat-shielding layer. The first heat-shielding layer includes a thermoplastic resin and at least one component selected from a phthalocyanine compound, a naphthalocyanine compound, and an anthracocyanine compound. The second heat-shielding layer includes a thermoplastic resin and metal oxide particles.
    Type: Application
    Filed: March 12, 2014
    Publication date: July 10, 2014
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hirofumi Kitano, Juichi Fukatani, Daizou Ii, Takazumi Okabayashi, Ryuta Tsunoda