Patents by Inventor Kota Nakai

Kota Nakai 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: 11926140
    Abstract: Provided is a glass film-resin composite body which makes it possible to obtain a long-length (e.g., 500 m or more-long) glass roll. The glass roll with resin film comprises a glass film, and a resin film laminated to at least one surface of the glass film through an adhesive, wherein a creep amount a of the adhesive is 50 ?m or less, as measured after applying a tensile shear load per unit area of the adhesive of 5 g/mm2, to the resin film for 48 hours, in a state in which the glass film is fixed in 23° C. and 50% RH.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: March 12, 2024
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Junichi Inagaki, Kazuhito Hosokawa, Kota Nakai, Toshihiro Kanno
  • Publication number: 20230405966
    Abstract: Provided is a glass film-resin composite which makes it possible to obtain a long-length (e.g., 500 m or more-long) glass roll. The glass film-resin composite comprises a glass film, and a resin tape laminated to at least one surface of the glass film through an adhesive, wherein the width 1 (mm) of the resin tape satisfies the following formula (1). l ? a ? E g ? t g E p ? t p ( 1 ) (where: a represents a reinforcement coefficient (mm*(?m)1/2) which is 1.10 or more; Eg represents the Young's modulus (GPa) of the glass film; Ep represents the Young's modulus (GPa) of the resin tape; tg represents the thickness (?m) of the glass film; and tp represents the thickness (?m) of the resin tape.
    Type: Application
    Filed: August 28, 2023
    Publication date: December 21, 2023
    Inventors: Takeshi MURASHIGE, Junichi INAGAKI, Kazuhito HOSOKAWA, Kota NAKAI, Toshihiro KANNO
  • Patent number: 11738534
    Abstract: Provided is a glass film-resin composite which makes it possible to obtain a long-length (e.g., 500 m or more-long) glass roll. The glass film-resin composite comprises a glass film, and a resin tape laminated to at least one surface of the glass film through an adhesive, wherein the width 1 (mm) of the resin tape satisfies the following formula (1). l ? ? ? a ? E g ? t g E p ? t p ( 1 ) (where: a represents a reinforcement coefficient (mm*(?m)1/2) which is 1.10 or more; Eg represents the Young's modulus (GPa) of the glass film; Ep represents the Young's modulus (GPa) of the resin tape; tg represents the thickness (?m) of the glass film; and tp represents the thickness (?m) of the resin tape.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: August 29, 2023
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Junichi Inagaki, Kazuhito Hosokawa, Kota Nakai, Toshihiro Kanno
  • Patent number: 11731412
    Abstract: Provided is a production method for a film laminate by which a tough film can be bonded to a brittle film while the breakage of the brittle film is prevented. The production method for a film laminate of the present invention includes bonding a tough film having an elongated shape to a brittle film having an elongated shape while conveying the brittle film, wherein the method includes bonding the tough film and the brittle film to each other by bringing the tough film close to the brittle film, followed by blowing of a gas from a side of the tough film opposite to the brittle film.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: August 22, 2023
    Assignee: NITTO DENKO CORPORATION
    Inventors: Junichi Inagaki, Takeshi Murashige, Kazuhito Hosokawa, Toshihiro Kanno, Kota Nakai
  • Publication number: 20230256727
    Abstract: A method is disclosed for dividing a composite material 10 including a brittle material layer 1 and a resin layer 2 that are laminated together, the method includes: a resin removing step of applying laser light L1 oscillated from a CO2 laser light source 20 to the resin layer along a planned division line DL of the composite material, so that a processed groove 24 is formed along the planned division line; and a brittle material removing step of applying, after the resin removing step, laser light L2 oscillated from an ultrashort pulsed laser light source 30 to the brittle material layer along the planned division line, so that processed marks 11 are formed along the planned division line. The processed marks formed in the brittle material removing step open on the resin layer side and do not penetrate through the brittle material layer.
    Type: Application
    Filed: April 19, 2021
    Publication date: August 17, 2023
    Applicant: NITTO DENKO CORPORATION
    Inventors: Toshihiro Kanno, Satoshi Hirata, Kota Nakai, Takeshi Murashige, Junichi Inagaki
  • Patent number: 11639046
    Abstract: Provided is a glass film-resin composite, which prevents the breakage of a glass film and enables the production of an elongated glass film. The glass film-resin composite of the present invention includes: an elongated glass film; and a resin tape arranged on at least one surface of the elongated glass film, wherein the resin tape is linearly arranged at least near each of both ends in a widthwise direction of the elongated glass film in one surface of the elongated glass film, and wherein the resin tape includes an adhesive layer, and the adhesive layer is directly arranged on the elongated glass film.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: May 2, 2023
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Junichi Inagaki, Atsushi Kishi, Kota Nakai, Toshihiro Kanno
  • Publication number: 20230033067
    Abstract: Provided is a method comprises: continuously forming an elongated, glass film having marginal portions from molten glass into a given shape having two marginal portions, in width-directional opposite edge regions thereof, wherein the glass film having marginal portions has the marginal portions, and an effective portion formed in a width-directional central region of the glass film having marginal portions; annealing the glass film having marginal portions; continuously forming resin tapes on the glass film having marginal portions at positions adjacent to and away by a given distance from the respective marginal portions, to extend in a length direction of the glass film having marginal portions; and continuously removing each of the marginal portions from the glass film having marginal portions, along a position between the marginal portion and a corresponding one of the resin tapes, or at a given width-directional position within the corresponding resin tape.
    Type: Application
    Filed: September 23, 2022
    Publication date: February 2, 2023
    Inventors: Takeshi MURASHIGE, Junichi INAGAKI, Kazuhito HOSOKAWA, Kota NAKAI, Toshihiro KANNO, Yoshinori HASEGAWA, Kaoru MITSUGI, Naohiro IKAI, Hiroki MORI, Yohei KIRIHATA
  • Publication number: 20220315472
    Abstract: A method is disclosed for dividing a composite material in which a brittle material layer and a resin layer are laminated, including: a resin removing step of irradiating the resin layer with a laser beam oscillated from a first laser source along a scheduled dividing line of the composite material to form a processing groove along the scheduled dividing line; a brittle material removing step of irradiating the brittle material layer with a laser beam oscillated from an ultrashort pulsed laser source along the scheduled dividing line to form a processing mark along the scheduled dividing line; and a brittle material layer dividing step of generating thermal stress in the brittle material layer by irradiating the brittle material layer with a laser beam oscillated from a second laser source from the opposite side to the resin layer to thereby divide the brittle material layer.
    Type: Application
    Filed: February 19, 2020
    Publication date: October 6, 2022
    Applicant: NITTO DENKO CORPORATION
    Inventors: Toshihiro Kanno, Satoshi Hirata, Kota Nakai, Naoyuki Matsuo
  • Publication number: 20220259092
    Abstract: A method is disclosed for dividing a composite material in which a brittle material layer and a resin layer are laminated, including: irradiating the resin layer with a laser beam L1 oscillated from a CO2 laser source along scheduled dividing lines DL of the composite material to form a processing groove along the scheduled dividing lines; and irradiating the brittle material layer with a laser beam L2 oscillated from an ultrashort pulsed laser source along the scheduled dividing lines to form a processing mark along the scheduled dividing lines. In the resin removing step, in a region IS where the scheduled dividing lines intersect, the laser beam oscillated from the CO2 laser source is not irradiated multiple times, or an irradiation amount of the laser beam is decreased relative to an irradiation amount in a region other than a region where the scheduled dividing lines intersect.
    Type: Application
    Filed: February 19, 2020
    Publication date: August 18, 2022
    Applicant: NITTO DENKO CORPORATION
    Inventors: Toshihiro Kanno, Takahiro Shinozaki, Kota Nakai, Naoyuki Matsuo
  • Patent number: 11385391
    Abstract: A long polarizer that can achieve the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus, that shows no variation in quality when provided as a final product, and that is excellent in yield in its production. A polarizer according to an embodiment includes a long resin film containing a dichromatic substance, the polarizer having non-polarization portions arranged in a lengthwise direction and/or a widthwise direction at predetermined intervals, the non-polarization portions including decolored portions formed through partial decoloring.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: July 12, 2022
    Assignee: NITTO DENKO CORPORATION
    Inventors: Masahiro Yaegashi, Daisuke Ogomi, Yuki Nakano, Yuji Saiki, Kota Nakai
  • Publication number: 20220118739
    Abstract: Provided is a glass film-resin composite body which makes it possible to obtain a long-length (e.g., 500 m or more-long) glass roll. The glass roll with resin film comprises a glass film, and a resin film laminated to at least one surface of the glass film through an adhesive, wherein a creep amount a of the adhesive is 50 ?m or less, as measured after applying a tensile shear load per unit area of the adhesive of 5 g/mm2, to the resin film for 48 hours, in a state in which the glass film is fixed in 23° C. and 50% RH.
    Type: Application
    Filed: December 29, 2021
    Publication date: April 21, 2022
    Inventors: Takeshi MURASHIGE, Junichi INAGAKI, Kazuhito HOSOKAWA, Kota NAKAI, Toshihiro KANNO
  • Patent number: 11241863
    Abstract: Provided is a glass film-resin composite body which makes it possible to obtain a long-length (e.g., 500 m or more-long) glass roll. The glass roll with resin film comprises a glass film, and a resin film laminated to at least one surface of the glass film through an adhesive, wherein a creep amount a of the adhesive is 50 ?m or less, as measured after applying a tensile shear load per unit area of the adhesive of 5 g/mm2, to the resin film for 48 hours, in a state in which the glass film is fixed in 23° C. and 50% RH.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: February 8, 2022
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Junichi Inagaki, Kazuhito Hosokawa, Kota Nakai, Toshihiro Kanno
  • Patent number: 11061176
    Abstract: A polarizer that can realize the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus. A polarizer including a resin film containing a dichroic substance, wherein the polarizer has a low dichroic substance concentration portion whose content of the dichroic substance is relatively low in the resin film. In the polarizer, the low dichroic substance concentration portion has a content of an alkali metal and/or an alkaline earth metal of 3.6 wt % or less.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: July 13, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Daisuke Ogomi, Yuji Saiki, Masahiro Yaegashi, Kota Nakai, Yuki Nakano
  • Publication number: 20210178705
    Abstract: Provided is a production method for a film laminate by which a tough film can be bonded to a brittle film while the breakage of the brittle film is prevented. The production method for a film laminate of the present invention includes bonding a tough film having an elongated shape to a brittle film having an elongated shape while conveying the brittle film, wherein the method includes bonding the tough film and the brittle film to each other by bringing the tough film close to the brittle film, followed by blowing of a gas from a side of the tough film opposite to the brittle film.
    Type: Application
    Filed: March 2, 2021
    Publication date: June 17, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Junichi Inagaki, Takeshi Murashige, Kazuhito Hosokawa, Toshihiro Kanno, Kota Nakai
  • Publication number: 20210138764
    Abstract: Provided is a glass film-resin composite, which prevents the breakage of a glass film and enables the production of an elongated glass film. The glass film-resin composite of the present invention includes: an elongated glass film; and a resin tape arranged on at least one surface of the elongated glass film, wherein the resin tape is linearly arranged at least near each of both ends in a widthwise direction of the elongated glass film in one surface of the elongated glass film, and wherein the resin tape includes an adhesive layer, and the adhesive layer is directly arranged on the elongated glass film.
    Type: Application
    Filed: April 17, 2019
    Publication date: May 13, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Junichi Inagaki, Atsushi Kishi, Kota Nakai, Toshihiro Kanno
  • Patent number: 10960610
    Abstract: Provided is a production method for a film laminate by which a tough film can be bonded to a brittle film while the breakage of the brittle film is prevented. The production method for a film laminate of the present invention includes bonding a tough film having an elongated shape to a brittle film having an elongated shape while conveying the brittle film, wherein the method includes bonding the tough film and the brittle film to each other by bringing the tough film close to the brittle film, followed by blowing of a gas from a side of the tough film opposite to the brittle film.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: March 30, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Junichi Inagaki, Takeshi Murashige, Kazuhito Hosokawa, Toshihiro Kanno, Kota Nakai
  • Patent number: 10914868
    Abstract: A primary object of the present invention is to provide a polarizing plate excellent in durability. A polarizing plate (100) according to an embodiment of the present invention includes: a polarizer (10); and a protective film (21 and 22) arranged on at least one side of the polarizer (10). The polarizing plate (100) has a dimensional change ratio of ?0.2% or more in a transmission axis direction thereof when the polarizing plate (100) cut into a size measuring 100 mm by 100 mm is bonded to a glass plate with a pressure-sensitive adhesive and the following operation is repeated 100 times: the polarizing plate (100) bonded to the glass plate is left to stand under an atmosphere at ?40° C. for 30 minutes and then left to stand under an atmosphere at 85° C. for 30 minutes.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: February 9, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Naotaka Higuchi, Kota Nakai, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Keisuke Kimura
  • Publication number: 20200393605
    Abstract: A long polarizer that can achieve the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus, that shows no variation in quality when provided as a final product, and that is excellent in yield in its production. A polarizer according to an embodiment of the present invention includes a long resin film containing a dichromatic substance, the polarizer having non-polarization portions arranged in a lengthwise direction and/or a widthwise direction at predetermined intervals, the non-polarization portions including decolored portions formed through partial decoloring.
    Type: Application
    Filed: July 22, 2020
    Publication date: December 17, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masahiro Yaegashi, Daisuke Ogomi, Yuki Nakano, Yuji Saiki, Kota Nakai
  • Patent number: 10754072
    Abstract: A long polarizer that can achieve the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus, that shows no variation in quality when provided as a final product, and that is excellent in yield in its production. A polarizer including a long resin film containing a dichromatic substance, the polarizer having non-polarization portions arranged in a lengthwise direction and/or a widthwise direction at predetermined intervals, the non-polarization portions including decolored portions formed through partial decoloring.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: August 25, 2020
    Assignee: NITTO DENKO CORPORATION
    Inventors: Masahiro Yaegashi, Daisuke Ogomi, Yuki Nakano, Yuji Saiki, Kota Nakai
  • Publication number: 20200225395
    Abstract: A polarizer that can realize the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus. A polarizer including a resin film containing a dichroic substance, wherein the polarizer has a low dichroic substance concentration portion whose content of the dichroic substance is relatively low in the resin film. In the polarizer, the low dichroic substance concentration portion has a content of an alkali metal and/or an alkaline earth metal of 3.6 wt % or less.
    Type: Application
    Filed: February 26, 2020
    Publication date: July 16, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Daisuke Ogomi, Yuji Saiki, Masahiro Yaegashi, Kota Nakai, Yuki Nakano