Patents by Inventor Satoru Kunikata
Satoru Kunikata 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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Patent number: 10101514Abstract: Provided is a laminate comprising a thermoplastic resin substrate and a polyvinyl alcohol based resin layer formed on the thermoplastic resin substrate, being used to form a polarizing film of the polyvinyl alcohol based resin layer treated with a post-process comprising at least a dyeing step of dyeing the polyvinyl alcohol based resin layer with a dichroic material, the post-process being performed after the polyvinyl alcohol based resin layer formed on the thermoplastic resin substrate is stretched together with the thermoplastic resin substrate, wherein the polyvinyl alcohol based resin layer comprises a polyvinyl alcohol based resin and a halide.Type: GrantFiled: September 12, 2016Date of Patent: October 16, 2018Assignee: NITTO DENKO CORPORATIONInventors: Shusaku Goto, Minoru Miyatake, Takashi Kamijo, Satoru Kunikata
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Publication number: 20180052268Abstract: A method of producing a polarizing plate according to an embodiment includes: applying an application liquid containing a polyvinyl alcohol-based resin and a surfactant onto a resin substrate to produce a laminate in which a polyvinyl alcohol-based resin layer is formed on the resin substrate; stretching and dyeing the polyvinyl alcohol-based resin layer formed on the resin substrate to produce a polarizing film; laminating an optical functional film on a polarizing film side of the laminate to produce an optical functional film laminate; and peeling the resin substrate from the optical functional film laminate. A content of the surfactant in the application liquid is less than 1 part by weight with respect to 100 parts by weight of the polyvinyl alcohol-based resin.Type: ApplicationFiled: October 31, 2017Publication date: February 22, 2018Applicant: NITTO DENKO CORPORATIONInventors: Satoru Kunikata, Shusaku Goto, Minoru Miyatake, Kentarou Yoshida
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Patent number: 9823397Abstract: A method of producing a polarizing plate according to an embodiment includes: applying an application liquid containing a polyvinyl alcohol-based resin and a surfactant onto a resin substrate to produce a laminate in which a polyvinyl alcohol-based resin layer is formed on the resin substrate; stretching and dyeing the polyvinyl alcohol-based resin layer formed on the resin substrate to produce a polarizing film; laminating an optical functional film on a polarizing film side of the laminate to produce an optical functional film laminate; and peeling the resin substrate from the optical functional film laminate. A content of the surfactant in the application liquid is less than 1 part by weight with respect to 100 parts by weight of the polyvinyl alcohol-based resin.Type: GrantFiled: December 9, 2014Date of Patent: November 21, 2017Assignee: NITTO DENKO CORPORATIONInventors: Satoru Kunikata, Shusaku Goto, Minoru Miyatake, Kentarou Yoshida
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Patent number: 9650482Abstract: A method of producing a laminate according to an embodiment of the present invention includes applying an application liquid containing a polyvinyl alcohol-based resin to one side of a resin substrate, followed by drying of the application liquid to form a polyvinyl alcohol-based resin layer. The method includes: passing the application liquid before the application through a depth-type filter having a filtration accuracy of from 50 ?m to 100 ?m; and fluctuating a pressure applied to the application liquid supplied to the depth-type filter to remove air bubbles in the filter.Type: GrantFiled: June 13, 2014Date of Patent: May 16, 2017Assignee: NITTO DENKO CORPORATIONInventors: Naoki Tomoguchi, Toshihiro Kanno, Satoru Kunikata, Kentarou Yoshida
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Publication number: 20160377772Abstract: Provided is a laminate comprising a thermoplastic resin substrate and a polyvinyl alcohol based resin layer formed on the thermoplastic resin substrate, being used to form a polarizing film of the polyvinyl alcohol based resin layer treated with a post-process comprising at least a dyeing step of dyeing the polyvinyl alcohol based resin layer with a dichroic material, the post-process being performed after the polyvinyl alcohol based resin layer formed on the thermoplastic resin substrate is stretched together with the thermoplastic resin substrate, wherein the polyvinyl alcohol based resin layer comprises a polyvinyl alcohol based resin and a halide.Type: ApplicationFiled: September 12, 2016Publication date: December 29, 2016Inventors: Shusaku GOTO, Minoru MIYATAKE, Takashi KAMIJO, Satoru KUNIKATA
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Publication number: 20160377774Abstract: Provided is a laminate comprising a thermoplastic resin substrate and a polyvinyl alcohol based resin layer formed on the thermoplastic resin substrate, being used to form a polarizing film of the polyvinyl alcohol based resin layer treated with a post-process comprising at least a dyeing step of dyeing the polyvinyl alcohol based resin layer with a dichroic material, the post-process being performed after the polyvinyl alcohol based resin layer formed on the thermoplastic resin substrate is stretched together with the thermoplastic resin substrate, wherein the polyvinyl alcohol based resin layer comprises a polyvinyl alcohol based resin and glycerin.Type: ApplicationFiled: September 12, 2016Publication date: December 29, 2016Inventors: Shusaku GOTO, Minoru MIYATAKE, Takashi KAMIJO, Satoru KUNIKATA
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Publication number: 20160377773Abstract: Provided is a laminate comprising a thermoplastic resin substrate and a polyvinyl alcohol based resin layer formed on the thermoplastic resin substrate, being used to form a polarizing film of the polyvinyl alcohol based resin layer treated with a post-process comprising at least a dyeing step of dyeing the polyvinyl alcohol based resin layer with a dichroic material, the post-process being performed after the polyvinyl alcohol based resin layer formed on the thermoplastic resin substrate is stretched together with the thermoplastic resin substrate, wherein the polyvinyl alcohol based resin layer comprises a polyvinyl alcohol based resin and urea.Type: ApplicationFiled: September 12, 2016Publication date: December 29, 2016Inventors: Shusaku GOTO, Minoru MIYATAKE, Takashi KAMIJO, Satoru KUNIKATA
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Publication number: 20160238769Abstract: A resin film according to an embodiment of the present invention includes: a substrate film; and an antistatic layer formed on one side of the substrate film and including a binder resin and a conductive material. The binder resin includes a polyurethane-based resin; the antistatic layer has an arithmetic average surface roughness Ra of 10 nm or more; and the conductive material includes a conductive polymer.Type: ApplicationFiled: April 29, 2016Publication date: August 18, 2016Applicant: NITTO DENKO CORPORATIONInventors: Hitoshi Kitagishi, Satoru Kunikata, Minoru Miyatake
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Patent number: 9340681Abstract: A resin film according to an embodiment of the present invention includes: a substrate film; and an antistatic layer formed on one side of the substrate film and including a binder resin and a conductive material. The binder resin includes a polyurethane-based resin; the antistatic layer has an arithmetic average surface roughness Ra of 10 nm or more; and the conductive material includes a conductive polymer.Type: GrantFiled: August 20, 2013Date of Patent: May 17, 2016Assignee: NITTO DENKO CORPORATIONInventors: Hitoshi Kitagishi, Satoru Kunikata, Minoru Miyatake
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Patent number: 9340718Abstract: A laminate according to an embodiment of the present invention includes: a resin substrate; a polyvinyl alcohol-based resin layer formed on one side of the resin substrate; and an antistatic layer formed on another side of the resin substrate and comprising a binder resin and a conductive material. The antistatic layer has a fine uneven surface; and the fine uneven surface includes protrusions having an average height of 25 nm or more and a softening temperature of 150° C. or more.Type: GrantFiled: January 31, 2014Date of Patent: May 17, 2016Assignee: NITTO DENKO CORPORATIONInventors: Satoru Kunikata, Takashi Kamijo, Tomohiro Mori
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Patent number: 9310523Abstract: A laminate according to an embodiment of the present invention includes: a resin substrate; a polyvinyl alcohol-based resin layer formed on one side of the resin substrate; and an antistatic layer formed on another side of the resin substrate and comprising a binder resin and a conductive material. The binder resin includes a polyurethane-based resin; the antistatic layer has an arithmetic average surface roughness Ra of 10 nm or more; and the conductive material includes a conductive polymer.Type: GrantFiled: August 20, 2013Date of Patent: April 12, 2016Assignee: NITTO DENKO CORPORATIONInventors: Satoru Kunikata, Hitoshi Kitagishi, Minoru Miyatake
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Publication number: 20150177434Abstract: There is provided a method of producing a polarizing plate by which a polarizing film can be produced without the occurrence of a problem such as peeling between a resin substrate and a polyvinyl alcohol-based resin layer, and after the production of the polarizing film, the polarizing film and the resin substrate can be peeled without limitations on a peel direction and a peel angle, and a polarizing plate excellent in external appearance can be obtained.Type: ApplicationFiled: December 9, 2014Publication date: June 25, 2015Applicant: NITTO DENKO CORPORATIONInventors: Satoru Kunikata, Shusaku Goto, Minoru Miyatake, Kentarou Yoshida
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Publication number: 20150010763Abstract: A method of producing a laminate according to an embodiment of the present invention includes applying an application liquid containing a polyvinyl alcohol-based resin to one side of a resin substrate, followed by drying of the application liquid to form a polyvinyl alcohol-based resin layer. The method includes: passing the application liquid before the application through a depth-type filter having a filtration accuracy of from 50 ?m to 100 ?m; and fluctuating a pressure applied to the application liquid supplied to the depth-type filter to remove air bubbles in the filter.Type: ApplicationFiled: June 13, 2014Publication date: January 8, 2015Applicant: NITTO DENKO CORPORATIONInventors: Naoki Tomoguchi, Toshihiro Kanno, Satoru Kunikata, Kentarou Yoshida
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Publication number: 20140248465Abstract: A laminate according to an embodiment of the present invention includes: a resin substrate; a polyvinyl alcohol-based resin layer formed on one side of the resin substrate; and an antistatic layer formed on another side of the resin substrate and comprising a binder resin and a conductive material. The antistatic layer has a fine uneven surface; and the fine uneven surface includes protrusions having an average height of 25 nm or more and a softening temperature of 150° C. or more.Type: ApplicationFiled: January 31, 2014Publication date: September 4, 2014Applicant: NITTO DENKO CORPORATIONInventors: Satoru Kunikata, Takashi Kamijo, Tomohiro Mori
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Publication number: 20140065364Abstract: A resin film according to an embodiment of the present invention includes: a substrate film; and an antistatic layer formed on one side of the substrate film and including a binder resin and a conductive material. The binder resin includes a polyurethane-based resin; the antistatic layer has an arithmetic average surface roughness Ra of 10 nm or more; and the conductive material includes a conductive polymer.Type: ApplicationFiled: August 20, 2013Publication date: March 6, 2014Applicant: NITTO DENKO CORPORATIONInventors: Hitoshi Kitagishi, Satoru Kunikata, Minoru Miyatake
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Publication number: 20140065429Abstract: A laminate according to an embodiment of the present invention includes: a resin substrate; a polyvinyl alcohol-based resin layer formed on one side of the resin substrate; and an antistatic layer formed on another side of the resin substrate and comprising a binder resin and a conductive material. The binder resin includes a polyurethane-based resin; the antistatic layer has an arithmetic average surface roughness Ra of 10 nm or more; and the conductive material includes a conductive polymer.Type: ApplicationFiled: August 20, 2013Publication date: March 6, 2014Applicant: NITTO DENKO CORPORATIONInventors: Satoru Kunikata, Hitoshi Kitagishi, Minoru Miyatake
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Patent number: 8520171Abstract: Provided is an optical display device using a polarizing film which has a thickness of 10 ?m or less and exhibits high optical characteristics. The optical display device comprises a continuous web of polarizing film which is made of a polyvinyl alcohol type resin having a molecularly oriented dichroic material, and formed through stretching to have a thickness of 10 ?m or less and satisfy conditions expressed by the following formulas: P>?(100.929T-42.4?1)×100 (where T<42.3); and P?99.9 (where T?42.3), wherein T is a single layer transmittance, and P is a polarization rate. The polarizing film may be prepared by subjecting a laminate comprising a non-crystallizable ester type thermoplastic resin substrate and a polyvinyl alcohol type resin layer formed on the substrate to by 2-stage stretching consisting of preliminary in-air stretching and in-boric-acid-solution stretching.Type: GrantFiled: December 10, 2012Date of Patent: August 27, 2013Assignee: Nitto Denko CorporationInventors: Takeharu Kitagawa, Shusaku Goto, Minoru Miyatake, Tomohiro Mori, Takashi Kamijo, Kentaro Yoshida, Satoru Kunikata
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Patent number: 8520169Abstract: Provided is an optical display device using a polarizing film which has a thickness of 10 ?m or less and exhibits high optical characteristics. The optical display device comprises a continuous web of polarizing film which is made of a polyvinyl alcohol type resin having a molecularly oriented dichroic material, and formed through stretching to have a thickness of 10 ?m or less and satisfy conditions expressed by the following formulas: P>?(100.929T?42.4?1)×100 (where T<42.3); and P?99.9 (where T?42.3), wherein T is a single layer transmittance, and P is a polarization rate. The polarizing film may be prepared by subjecting a laminate comprising a non-crystallizable ester type thermoplastic resin substrate and a polyvinyl alcohol type resin layer formed on the substrate to by 2-stage stretching consisting of preliminary in-air stretching and in-boric-acid-solution stretching.Type: GrantFiled: September 2, 2011Date of Patent: August 27, 2013Assignee: Nitto Denko CorporationInventors: Takeharu Kitagawa, Shusaku Goto, Minoru Miyatake, Tomohiro Mori, Takashi Kamijo, Kentaro Yoshida, Satoru Kunikata
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Patent number: 8379169Abstract: Provided is an optical display device using a polarizing film which has a thickness of 10 ?m or less and exhibits high optical characteristics. The optical display device comprises a continuous web of polarizing film which is made of a polyvinyl alcohol type resin having a molecularly oriented dichroic material, and formed through stretching to have a thickness of 10 ?m or less and satisfy conditions expressed by the following formulas: P>?(100.929T-42.4?1)×100 (where T<42.3); and P?99.9 (where T?42.3), wherein T is a single layer transmittance, and P is a polarization rate. The polarizing film may be prepared by subjecting a laminate comprising a non-crystallizable ester type thermoplastic resin substrate and a polyvinyl alcohol type resin layer formed on the substrate to by 2-stage stretching consisting of preliminary in-air stretching and in-boric-acid-solution stretching.Type: GrantFiled: October 27, 2011Date of Patent: February 19, 2013Assignee: Nitto Denko CorporationInventors: Takeharu Kitagawa, Shusaku Goto, Minoru Miyatake, Tomohiro Mori, Takashi Kamijo, Kentaro Yoshida, Satoru Kunikata
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Publication number: 20120057104Abstract: Provided is an optical display device using a polarizing film which has a thickness of 10 ?m or less and exhibits high optical characteristics. The optical display device comprises a continuous web of polarizing film which is made of a polyvinyl alcohol type resin having a molecularly oriented dichroic material, and formed through stretching to have a thickness of 10 ?m or less and satisfy conditions expressed by the following formulas: P>?(100.929T?42.4?1)×100 (where T<42.3); and P?99.9 (where T?42.3), wherein T is a single layer transmittance, and P is a polarization rate. The polarizing film may be prepared by subjecting a laminate comprising a non-crystallizable ester type thermoplastic resin substrate and a polyvinyl alcohol type resin layer formed on the substrate to by 2-stage stretching consisting of preliminary in-air stretching and in-boric-acid-solution stretching.Type: ApplicationFiled: September 2, 2011Publication date: March 8, 2012Applicant: NITTO DENKO CORPORATIONInventors: Takeharu KITAGAWA, Shusaku GOTO, Minoru MIYATAKE, Tomohiro MORI, Takashi KAMIJO, Kentaro YOSHIDA, Satoru KUNIKATA