Patents by Inventor Tatsuki Nagatsuka

Tatsuki Nagatsuka 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: 10265693
    Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: April 23, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Takahiro Fukuoka, Junichi Nagase, Shusaku Shibata, Tatsuki Nagatsuka, Saori Yamamoto
  • Patent number: 10221090
    Abstract: The present invention provides a transparent substrate that significantly prevents the progress of a crack in a thin-plate glass and the rupture of the glass, and is excellent in bending property and flexibility. A transparent substrate according to an embodiment of the present invention includes: a thin-plate glass having a thickness of 10 ?m to 100 ?m; and a resin layer on at least one side of the thin-plate glass, wherein a shrinkage stress of the resin layer on the thin-plate glass is 5 MPa or more.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: March 5, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Daisuke Hattori, Yoshimasa Sakata, Takashi Yamaoka, Tatsuki Nagatsuka
  • Publication number: 20190008043
    Abstract: There is provided a flexible substrate having excellent flexibility and gas barrier properties. A flexible substrate 100 according to the present invention includes: a base material 20 including an inorganic glass 10 and resin layers 11 and 11? placed on both sides of the inorganic glass 10; and an inorganic thin film 12 placed on a side of one of the resin layers where the inorganic glass is not placed, wherein the inorganic thin film 12 is formed on at least a peripheral edge of one surface of the base material.
    Type: Application
    Filed: September 5, 2018
    Publication date: January 3, 2019
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Takashi Yamaoka, Daisuke Hattori, Yoshimasa Sakata, Tatsuki Nagatsuka
  • Publication number: 20180368256
    Abstract: There is provided a flexible substrate having excellent flexibility and gas barrier properties. A flexible substrate 100 according to the present invention includes: a base material 20 including an inorganic glass 10 and resin layers 11 and 11? placed on both sides of the inorganic glass 10; and an inorganic thin film 12 placed on a side of one of the resin layers where the inorganic glass is not placed, wherein the inorganic thin film 12 is formed on at least a peripheral edge of one surface of the base material.
    Type: Application
    Filed: August 17, 2018
    Publication date: December 20, 2018
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Takashi Yamaoka, Daisuke Hattori, Yoshimasa Sakata, Tatsuki Nagatsuka
  • Publication number: 20180228002
    Abstract: There is provided a transparent substrate which is excellent in dimensional stability, which significantly prevents the progress of a crack in an inorganic glass and the rupture of the inorganic glass, and which is excellent in flexibility. A transparent substrate according to an embodiment of the present invention includes: an inorganic glass having a thickness of 10 ?m to 100 ?m; and a resin layer on one side, or each of both sides, of the inorganic glass, wherein: a ratio of a total thickness of the resin layer to a thickness of the inorganic glass is 0.9 to 4; the resin layer has a modulus of elasticity at 25° C. of 1.5 GPa to 10 GPa; and the resin layer has a fracture toughness value at 25° C. of 1.5 MPa·m1/2 to 10 MPa·m1/2.
    Type: Application
    Filed: March 29, 2018
    Publication date: August 9, 2018
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Daisuke Hattori, Yoshimasa Sakata, Takashi Yamaoka, Tatsuki Nagatsuka
  • Patent number: 9847544
    Abstract: Ion conductive organic-inorganic composite particles are particles that have an organic group on the surface of inorganic particles and have at least a configuration that does not allow the inorganic particles to contact with each other by steric hindrance of the organic group, the organic group containing an ion conductive group.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: December 19, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Hideyuki Emori, Hiroyuki Nishii, Junichi Nagase, Shusaku Shibata, Saori Fukuzaki, Tatsuki Nagatsuka, Takahiro Fukuoka
  • Publication number: 20170189895
    Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.
    Type: Application
    Filed: March 22, 2017
    Publication date: July 6, 2017
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Takahiro FUKUOKA, Junichi NAGASE, Shusaku SHIBATA, Tatsuki NAGATSUKA, Saori FUKUZAKI
  • Publication number: 20160222194
    Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.
    Type: Application
    Filed: April 13, 2016
    Publication date: August 4, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Takahiro FUKUOKA, Junichi NAGASE, Shusaku SHIBATA, Tatsuki NAGATSUKA, Saori FUKUZAKI
  • Publication number: 20160120029
    Abstract: There is provided a flexible substrate having excellent flexibility and gas barrier properties. A flexible substrate 100 according to the present invention includes: a base material 20 including an inorganic glass 10 and resin layers 11 and 11? placed on both sides of the inorganic glass 10; and an inorganic thin film 12 placed on a side of one of the resin layers where the inorganic glass is not placed, wherein the inorganic thin film 12 is formed on at least a peripheral edge of one surface of the base material.
    Type: Application
    Filed: January 4, 2016
    Publication date: April 28, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Takashi Yamaoka, Daisuke Hattori, Yoshimasa Sakata, Tatsuki Nagatsuka
  • Patent number: 9267058
    Abstract: Adhesive composition according to the present invention includes an adhesive base agent consisting of a monomer and a polymerization initiator. Adhesion of the adhesive composition changes to take local maximum value, minimum value and a value greater than the local maximum value along with increase of irradiation amount of the electromagnetic wave or particle beam irradiated to the adhesive composition under a predetermined temperature environment. In a method for manufacturing a laminate according to the present invention allows for easy peeling of adherends and a layer of the adhesive composition when adhesion of the adhesive composition takes the minimum value.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: February 23, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kentarou Takeda, Miki Okamoto, Takuya Mori, Tatsuki Nagatsuka
  • Publication number: 20150376478
    Abstract: [Object] To provide adhesive composition which allows for preventing misalignment when mutually laminating adherends, mutually strongly bonding the adherends when correction of lamination is not required, as well as peeling the adherends without causing any damage thereto when correction of lamination is required. [Means for achieving the Object] Adhesive composition according to the present invention comprises an adhesive base agent consisting of a monomer and a polymerization initiator. Adhesive strength of the adhesive composition changes to take a local maximum value, a local minimum value and a value greater than the local maximum value along with increase of irradiation amount of the electromagnetic wave or particle beam irradiated to the adhesive composition under a predetermined temperature environment.
    Type: Application
    Filed: September 3, 2015
    Publication date: December 31, 2015
    Inventors: Miki OKAMOTO, Takuya MORI, Kentarou TAKEDA, Tatsuki NAGATSUKA
  • Publication number: 20150065340
    Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.
    Type: Application
    Filed: November 7, 2014
    Publication date: March 5, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Takahiro FUKUOKA, Junichi NAGASE, Shusaku SHIBATA, Tatsuki NAGATSUKA, Saori FUKUZAKI
  • Patent number: 8911869
    Abstract: The present invention provides a transparent substrate excellent in solvent crack resistance, toughness, heat resistance, and flexibility. A transparent substrate according to an embodiment of the present invention includes: an inorganic glass; and a first resin layer placed on at least one side of the inorganic glass, wherein: the first resin layer contains a resin compound having a weight-average molecular weight in terms of polystyrene of 8×104 to 100×104; and no solvent crack occurs when a mixed solvent containing 20 wt % to 95 wt % of at least one kind of solvent selected from the group consisting of acetone, N-methylpyrrolidone, dimethyl sulfoxide, and N,N-dimethylformamide is brought into contact with the substrate.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: December 16, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Daisuke Hattori, Toshiyuki Iida, Takeshi Murashige, Takashi Yamaoka, Tatsuki Nagatsuka
  • Patent number: 8861077
    Abstract: A polarizing plate including a polarizer, a UV-shielding layer containing inorganic fine particles each having a band gap of 3.0 eV or more and a binder resin and a protective film. The UV-shielding layer contains the inorganic fine particles at a content of 40 to 80 vol %, and has a thickness of 400 nm or less.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: October 14, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Junichi Nagase, Bin Fang, Seiji Umemoto, Tatsuki Nagatsuka
  • Publication number: 20130266886
    Abstract: Ion conductive organic-inorganic composite particles are particles that have an organic group on the surface of inorganic particles and have at least a configuration that does not allow the inorganic particles to contact with each other by steric hindrance of the organic group, the organic group containing an ion conductive group.
    Type: Application
    Filed: April 11, 2011
    Publication date: October 10, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Hideyuki Emori, Hiroyuki Nishii, Junichi Nagase, Shusaku Shibata, Saori Fukuzaki, Tatsuki Nagatsuka, Takahiro Fukuoka
  • Patent number: 8537467
    Abstract: An antiglare film and an antiglare sheet with which an image display apparatus excelling in contrast while maintaining excellent antiglare performance is obtained, and a simple process for producing them are provided. In the antiglare film of the present invention, a rugged shape in a first direction is substantially different from a rugged shape in a second direction perpendicular to the first direction. Preferably, an average gradient angle ?a1 of the rugged shape in the first direction is larger than an average gradient angle ?a2 of the rugged shape in the second direction. More preferably, a difference ??a=?a1??a2 between the average gradient angle ?a1 and the average gradient angle ?a2 is 0.5° to 30°.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: September 17, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Naoto Ooe, Tatsuki Nagatsuka
  • Publication number: 20130118671
    Abstract: Adhesive composition according to the present invention includes an adhesive base agent consisting of a monomer and a polymerization initiator. Adhesion of the adhesive composition changes to take local maximum value, minimum value and a value greater than the local maximum value along with increase of irradiation amount of the electromagnetic wave or particle beam irradiated to the adhesive composition under a predetermined temperature environment. In a method for manufacturing a laminate according to the present invention allows for easy peeling of adherends and a layer of the adhesive composition when adhesion of the adhesive composition takes the minimum value.
    Type: Application
    Filed: April 28, 2011
    Publication date: May 16, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kentarou Takeda, Miki Okamoto, Takuya Mori, Tatsuki Nagatsuka
  • Publication number: 20130114026
    Abstract: An adhesive composition which allows for preventing misalignment when mutually laminating adherends, mutually strongly bonding the adherends when correction of lamination is not required, as well as peeling the adherends without causing any damage thereto when correction of lamination is required. The adhesive composition includes an adhesive base agent consisting of a monomer and a polymerization initiator. Adhesive strength of the adhesive composition changes to take a local maximum value, a local minimum value and a value greater than the local maximum value along with increase of irradiation amount of the electromagnetic wave or particle beam irradiated to the adhesive composition under a predetermined temperature environment.
    Type: Application
    Filed: April 30, 2010
    Publication date: May 9, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Miki Okamoto, Takuya Mori, Kentarou Takeda, Tatsuki Nagatsuka
  • Publication number: 20130109770
    Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.
    Type: Application
    Filed: April 11, 2011
    Publication date: May 2, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Takahiro Fukuoka, Junichi Nagase, Shusaku Shibata, Tatsuki Nagatsuka, Saori Fukuzaki
  • Patent number: 8253899
    Abstract: A birefringent film of the present invention comprises at least one kind of polycyclic compound including a —COOM group (the M denotes a counter ion), wherein an index ellipsoid satisfies a relation of nz>nx=ny. The polycyclic compound includes, for example, acenaphtho[1,2-b]quinoxaline derivative represented by the following general formula (I). The birefringent film of the present invention can be formed thin-type and have a high birefringent index in the thickness direction, since the birefringent film comprises the polycyclic compound.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: August 28, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Junzo Miyazaki, Shoichi Matsuda, Tatsuki Nagatsuka