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: 11926140Abstract: 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: GrantFiled: December 29, 2021Date of Patent: March 12, 2024Assignee: NITTO DENKO CORPORATIONInventors: Takeshi Murashige, Junichi Inagaki, Kazuhito Hosokawa, Kota Nakai, Toshihiro Kanno
-
Publication number: 20230405966Abstract: 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: August 28, 2023Publication date: December 21, 2023Inventors: Takeshi MURASHIGE, Junichi INAGAKI, Kazuhito HOSOKAWA, Kota NAKAI, Toshihiro KANNO
-
Patent number: 11738534Abstract: 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: GrantFiled: October 24, 2017Date of Patent: August 29, 2023Assignee: NITTO DENKO CORPORATIONInventors: Takeshi Murashige, Junichi Inagaki, Kazuhito Hosokawa, Kota Nakai, Toshihiro Kanno
-
Patent number: 11731412Abstract: 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: GrantFiled: March 2, 2021Date of Patent: August 22, 2023Assignee: NITTO DENKO CORPORATIONInventors: Junichi Inagaki, Takeshi Murashige, Kazuhito Hosokawa, Toshihiro Kanno, Kota Nakai
-
Publication number: 20230256727Abstract: 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: ApplicationFiled: April 19, 2021Publication date: August 17, 2023Applicant: NITTO DENKO CORPORATIONInventors: Toshihiro Kanno, Satoshi Hirata, Kota Nakai, Takeshi Murashige, Junichi Inagaki
-
Patent number: 11639046Abstract: 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: GrantFiled: April 17, 2019Date of Patent: May 2, 2023Assignee: NITTO DENKO CORPORATIONInventors: Takeshi Murashige, Junichi Inagaki, Atsushi Kishi, Kota Nakai, Toshihiro Kanno
-
Publication number: 20230033067Abstract: 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: September 23, 2022Publication date: February 2, 2023Inventors: Takeshi MURASHIGE, Junichi INAGAKI, Kazuhito HOSOKAWA, Kota NAKAI, Toshihiro KANNO, Yoshinori HASEGAWA, Kaoru MITSUGI, Naohiro IKAI, Hiroki MORI, Yohei KIRIHATA
-
Publication number: 20220315472Abstract: 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: ApplicationFiled: February 19, 2020Publication date: October 6, 2022Applicant: NITTO DENKO CORPORATIONInventors: Toshihiro Kanno, Satoshi Hirata, Kota Nakai, Naoyuki Matsuo
-
Publication number: 20220259092Abstract: 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: ApplicationFiled: February 19, 2020Publication date: August 18, 2022Applicant: NITTO DENKO CORPORATIONInventors: Toshihiro Kanno, Takahiro Shinozaki, Kota Nakai, Naoyuki Matsuo
-
Patent number: 11385391Abstract: 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: GrantFiled: July 22, 2020Date of Patent: July 12, 2022Assignee: NITTO DENKO CORPORATIONInventors: Masahiro Yaegashi, Daisuke Ogomi, Yuki Nakano, Yuji Saiki, Kota Nakai
-
Publication number: 20220118739Abstract: 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: December 29, 2021Publication date: April 21, 2022Inventors: Takeshi MURASHIGE, Junichi INAGAKI, Kazuhito HOSOKAWA, Kota NAKAI, Toshihiro KANNO
-
Patent number: 11241863Abstract: 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: GrantFiled: October 24, 2017Date of Patent: February 8, 2022Assignee: NITTO DENKO CORPORATIONInventors: Takeshi Murashige, Junichi Inagaki, Kazuhito Hosokawa, Kota Nakai, Toshihiro Kanno
-
Patent number: 11061176Abstract: 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: GrantFiled: February 26, 2020Date of Patent: July 13, 2021Assignee: NITTO DENKO CORPORATIONInventors: Daisuke Ogomi, Yuji Saiki, Masahiro Yaegashi, Kota Nakai, Yuki Nakano
-
Publication number: 20210178705Abstract: 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: March 2, 2021Publication date: June 17, 2021Applicant: NITTO DENKO CORPORATIONInventors: Junichi Inagaki, Takeshi Murashige, Kazuhito Hosokawa, Toshihiro Kanno, Kota Nakai
-
Publication number: 20210138764Abstract: 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: ApplicationFiled: April 17, 2019Publication date: May 13, 2021Applicant: NITTO DENKO CORPORATIONInventors: Takeshi Murashige, Junichi Inagaki, Atsushi Kishi, Kota Nakai, Toshihiro Kanno
-
Patent number: 10960610Abstract: 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: GrantFiled: October 20, 2017Date of Patent: March 30, 2021Assignee: NITTO DENKO CORPORATIONInventors: Junichi Inagaki, Takeshi Murashige, Kazuhito Hosokawa, Toshihiro Kanno, Kota Nakai
-
Patent number: 10914868Abstract: 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: November 7, 2019Date of Patent: February 9, 2021Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Naotaka Higuchi, Kota Nakai, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Keisuke Kimura
-
Publication number: 20200393605Abstract: 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: ApplicationFiled: July 22, 2020Publication date: December 17, 2020Applicant: NITTO DENKO CORPORATIONInventors: Masahiro Yaegashi, Daisuke Ogomi, Yuki Nakano, Yuji Saiki, Kota Nakai
-
Patent number: 10754072Abstract: 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: GrantFiled: June 26, 2015Date of Patent: August 25, 2020Assignee: NITTO DENKO CORPORATIONInventors: Masahiro Yaegashi, Daisuke Ogomi, Yuki Nakano, Yuji Saiki, Kota Nakai
-
Publication number: 20200225395Abstract: 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: ApplicationFiled: February 26, 2020Publication date: July 16, 2020Applicant: NITTO DENKO CORPORATIONInventors: Daisuke Ogomi, Yuji Saiki, Masahiro Yaegashi, Kota Nakai, Yuki Nakano