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).
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Publication number: 20200124773Abstract: 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: ApplicationFiled: November 7, 2019Publication date: April 23, 2020Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Naotaka Higuchi, Kota Nakai, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Keisuke Kimura
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Publication number: 20200103573Abstract: A polarizing plate excellent in durability. A polarizing plate 100 according to one embodiment includes a polarizer 10; and a pair of protective films 21, 22 respectively arranged on both main surfaces of the polarizer 10, wherein the polarizing plate 100 has a polarizer void portion 30 formed by positioning of an end surface 10a of the polarizer 10 inward in a plane direction relative to each of end surfaces 21a, 22a of the protective films 21, 22.Type: ApplicationFiled: December 4, 2019Publication date: April 2, 2020Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Kota Nakai, Naotaka Higuchi, Keisuke Kimura, Yoshitsugu Kitamura, Hiroki Kuramoto
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Patent number: 10585224Abstract: There is provided a polarizing plate excellent in durability. A polarizing plate 100 according to one embodiment of the present invention includes a polarizer 10; and a pair of protective films 21, 22 respectively arranged on both main surfaces of the polarizer 10, wherein the polarizing plate 100 has a polarizer void portion 30 formed by positioning of an end surface 10a of the polarizer 10 inward in a plane direction relative to each of end surfaces 21a, 22a of the protective films 21, 22.Type: GrantFiled: March 10, 2016Date of Patent: March 10, 2020Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Kota Nakai, Naotaka Higuchi, Keisuke Kimura, Yoshitsugu Kitamura, Hiroki Kuramoto
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Publication number: 20190322079Abstract: 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: ApplicationFiled: October 24, 2017Publication date: October 24, 2019Inventors: Takeshi MURASHIGE, Junichi INAGAKI, Kazuhito HOSOKAWA, Kota NAKAI, Toshihiro KANNO
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Publication number: 20190292086Abstract: 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: ApplicationFiled: October 17, 2017Publication date: September 26, 2019Applicants: NITTO DENKO CORPORATION, NIPPON ELECTRIC GLASS CO., LTD.Inventors: Takeshi MURASHIGE, Junichi INAGAKI, Kazuhito HOSOKAWA, Kota NAKAI, Toshihiro KANNO, Yoshinori HASEGAWA, Kaoru MITSUGI, Naohiro IKAI, Hiroki MORI, Yohei KIRIHATA
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Publication number: 20190276351Abstract: 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: ApplicationFiled: October 20, 2017Publication date: September 12, 2019Applicant: NITTO DENKO CORPORATIONInventors: Junichi Inagaki, Takeshi Murashige, Kazuhito Hosokawa, Toshihiro Kanno, Kota Nakai
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Publication number: 20190275778Abstract: 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 brittle film and the tough film to each other by causing the brittle film and the tough film to travel between a first roll and a second roll facing each other, and wherein the first roll has an Asker C hardness of from 1 to 70.Type: ApplicationFiled: October 20, 2017Publication date: September 12, 2019Applicant: NITTO DENKO CORPORATIONInventors: Junichi Inagaki, Takeshi Murashige, Kazuhito Hosokawa, Toshihiro Kanno, Kota Nakai
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Publication number: 20190270663Abstract: 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: ApplicationFiled: October 24, 2017Publication date: September 5, 2019Inventors: Takeshi MURASHIGE, Junichi INAGAKI, Kazuhito HOSOKAWA, Kota NAKAI, Toshihiro KANNO
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Publication number: 20190168317Abstract: There is provided a method by which a glass plate and an optical functional film can be integrally subjected to machining processing without the occurrence of any inconvenience. A production method for an optical laminate according to the present invention includes: laminating a glass plate and an optical functional film to form an optical laminate; superimposing a plurality of the optical laminates to form a workpiece; and relatively moving the workpiece and machining means, which includes a rotating shaft extending in a lamination direction of the workpiece and a machining blade formed as an outermost diameter of a main body configured to rotate about the rotating shaft, while rotating the machining means, to subject outer peripheral surfaces of the workpiece to machining processing. In the method, a feed per blade in the machining processing is from 5 ?m/blade to 30 ?m/blade.Type: ApplicationFiled: March 23, 2018Publication date: June 6, 2019Applicant: NITTO DENKO CORPORATIONInventors: Toshihiro Kanno, Kota Nakai, Takeshi Murashige
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Publication number: 20190113659Abstract: 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: ApplicationFiled: December 11, 2018Publication date: April 18, 2019Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Naotaka Higuchi, Kota Nakai, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Keisuke Kimura
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Patent number: 10241236Abstract: 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: GrantFiled: October 11, 2016Date of Patent: March 26, 2019Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Naotaka Higuchi, Kota Nakai, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Keisuke Kimura
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Patent number: 10215900Abstract: A long polarizing film laminate capable of producing a 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 polarizing film laminate according to an embodiment of the present invention includes: a long polarizer; and a surface protective film arranged on one surface side of the polarizer. The polarizing film laminate has, on the one surface side, exposed portions where the polarizer is exposed. The exposed portions are arranged in a lengthwise direction and/or a widthwise direction of the polarizer at predetermined intervals.Type: GrantFiled: June 26, 2015Date of Patent: February 26, 2019Assignee: NITTO DENKO CORPORATIONInventors: Masahiro Yaegashi, Daisuke Ogomi, Yuki Nakano, Yuji Saiki, Kota Nakai
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Patent number: 10139671Abstract: There is provided a polarizing plate which is imparted durability. A polarizing plats with a pressure-sensitive adhesive, layer according to an embodiment of the present invention includes: a polarizing plate including a polarizer and a protective film arranged on at least one side of the polarizer; and a pressure-sensitive adhesive layer formed on at least one surface of the polarizing plate, wherein in the surface of the polarizing plate where the pressure-sensitive adhesive layer is formed, a non-contact portion that is out of contact with the pressure-sensitive adhesive layer is formed in an end portion of the polarizing plate.Type: GrantFiled: November 2, 2016Date of Patent: November 27, 2018Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Kota Nakai, Naotaka Higuchi, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Youichirou Sugino, Keisuke Kimura
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Patent number: 10107947Abstract: There is provided a polarizer excellent in durability. A polarizer according to one embodiment of the present invention includes a resin film containing boric acid, wherein the resin film has a low-concentration portion, which contains a lower concentration of the boric acid than that in any other site, formed in an end portion thereof.Type: GrantFiled: March 10, 2016Date of Patent: October 23, 2018Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Kota Nakai, Naotaka Higuchi, Keisuke Kimura, Yoshitsugu Kitamura, Hiroki Kuramoto
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Publication number: 20180120488Abstract: There is provided a polarizing plate excellent in durability. A polarizing plate 100 according to one embodiment of the present invention includes a polarizer 10; and a pair of protective films 21, 22 respectively arranged on both main surfaces of the polarizer 10, wherein the polarizing plate 100 has a polarizer void portion 30 formed by positioning of an end surface 10a of the polarizer 10 inward in a plane direction relative to each of end surfaces 21a, 22a of the protective films 21, 22.Type: ApplicationFiled: March 10, 2016Publication date: May 3, 2018Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Kota Nakai, Naotaka Higuchi, Keisuke Kimura, Yoshitsugu Kitamura, Hiroki Kuramoto
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Publication number: 20180011233Abstract: There is provided a polarizer excellent in durability. A polarizer according to one embodiment of the present invention includes a resin film containing boric acid, wherein the resin film has a low-concentration portion, which contains a lower concentration of the boric acid than that in any other site, formed in an end portion thereof.Type: ApplicationFiled: March 10, 2016Publication date: January 11, 2018Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Kota Nakai, Naotaka Higuchi, Keisuke Kimura, Yoshitsugu Kitamura, Hiroki Kuramoto
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Publication number: 20170137671Abstract: A long pressure-sensitive adhesive film, that can be suitably used as a surface protective film or mask at the time of the treatment of a predetermined portion of a long film. A pressure-sensitive adhesive film including a long resin film; and a pressure-sensitive adhesive layer arranged on one surface of the resin film. The pressure-sensitive adhesive film has through-holes that are arranged in a lengthwise direction and/or a widthwise direction at predetermined intervals, and that penetrate the resin film and the pressure-sensitive adhesive layer integrally.Type: ApplicationFiled: June 26, 2015Publication date: May 18, 2017Applicant: NITTO DENKO CORPORATIONInventors: Daisuke Ogomi, Masahiro Yaegashi, Yuki Nakano, Kota Nakai, Yuki Ose
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Publication number: 20170129197Abstract: A method of producing a long polarizer by which a polarizer serving as a final product that can achieve the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus, and that is free of any variation in quality can be produced at low cost and with high productivity. A method of producing a long polarizer having non-polarization portions according to an embodiment of the present invention includes; laminating, on one surface of a long polarizer, a long surface protective film having through-holes arranged in a lengthwise direction and/or a widthwise direction at predetermined intervals to form a long polarizing film laminate; partially decoloring the polarizer through the through-holes of the surface protective film to form the non-polarization portions; and removing the surface protective film.Type: ApplicationFiled: June 26, 2015Publication date: May 11, 2017Applicant: NITTO DENKO CORPORATIONInventors: Masahiro Yaegashi, Daisuke Ogomi, Yuki Nakano, Yuji Saiki, Kota Nakai
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Publication number: 20170131449Abstract: A long polarizing film laminate capable of producing a 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 polarizing film laminate according to an embodiment of the present invention includes: a long polarizer; and a surface protective film arranged on one surface side of the polarizer. The polarizing film laminate has, on the one surface side, exposed portions where the polarizer is exposed. The exposed portions are arranged in a lengthwise direction and/or a widthwise direction of the polarizer at predetermined intervals.Type: ApplicationFiled: June 26, 2015Publication date: May 11, 2017Applicant: NITTO DENKO CORPORATIONInventors: Masahiro Yaegashi, Daisuke Ogomi, Yuki Nakano, Yuji Saiki, Kota Nakai
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Publication number: 20170131451Abstract: 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: ApplicationFiled: June 26, 2015Publication date: May 11, 2017Applicant: NITTO DENKO CORPORATIONInventors: Masahiro Yaegashi, Daisuke Ogomi, Yuki Nakano, Yuji Saiki, Kota Nakai