Patents by Inventor Youichirou Sugino
Youichirou Sugino 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: 11022735Abstract: There is provided a polarizing plate excellent in durability. A method of producing a polarizing plate according to an embodiment of the present invention includes: preparing a polarizing film laminate including a polarizer and a protective film arranged on at least one side of the polarizer; and shrinking the polarizing film laminate.Type: GrantFiled: November 7, 2019Date of Patent: June 1, 2021Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto, Youichirou Sugino
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Patent number: 10613263Abstract: There is provided a circularly polarizing plate for an organic EL display apparatus, which has an excellent antireflection function and has an excellent organic EL panel-protecting function. A circularly polarizing plate according to the present invention is used in an organic EL display apparatus. The circularly polarizing plate includes in this order: a polarizer; a retardation layer functioning as a ?/4 plate; a barrier layer; and a pressure-sensitive adhesive layer having a barrier function. An angle formed between an absorption axis of the polarizer and a slow axis of the retardation layer is from 35° to 55°.Type: GrantFiled: January 3, 2019Date of Patent: April 7, 2020Assignee: NITTO DENKO CORPORATIONInventors: Takeshi Murashige, Youichirou Sugino, Takami Hikita, Hiroyuki Takemoto, Mariko Hirai
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Publication number: 20200073035Abstract: There is provided a polarizing plate excellent in durability. A method of producing a polarizing plate according to an embodiment of the present invention includes: preparing a polarizing film laminate including a polarizer and a protective film arranged on at least one side of the polarizer; and shrinking the polarizing film laminate.Type: ApplicationFiled: November 7, 2019Publication date: March 5, 2020Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto, Youichirou Sugino
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Patent number: 10578786Abstract: There is provided a polarizer excellent in heat resistance. A polarizer according to an embodiment of the present invention includes a resin film containing iodine, wherein an end portion of the resin film has formed therein a high-concentration portion having a concentration of a substance that forms a counter ion of iodine higher than that of another portion.Type: GrantFiled: January 23, 2019Date of Patent: March 3, 2020Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Daisuke Ogomi, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Hiroki Kuramoto, Youichirou Sugino, Keisuke Kimura
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Patent number: 10520656Abstract: There is provided a circularly polarizing plate for an organic EL display apparatus, which has an excellent antireflection function and has an excellent organic EL panel-protecting function. A circularly polarizing plate according to the present invention is used in an organic EL display apparatus. The circularly polarizing plate includes in this order: a polarizer; a retardation layer functioning as a ?/4 plate; a barrier layer; and a pressure-sensitive adhesive layer having a barrier function. An angle formed between an absorption axis of the polarizer and a slow axis of the retardation layer is from 35° to 55°.Type: GrantFiled: November 18, 2015Date of Patent: December 31, 2019Assignee: NITTO DENKO CORPORATIONInventors: Takeshi Murashige, Youichirou Sugino, Takami Hikita, Hiroyuki Takemoto, Mariko Hirai
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Patent number: 10466397Abstract: There is provided a polarizing plate excellent in durability. A method of producing a polarizing plate according to an embodiment of the present invention includes: preparing a polarizing film laminate including a polarizer and a protective film arranged on at least one side of the polarizer; and shrinking the polarizing film laminate.Type: GrantFiled: October 24, 2016Date of Patent: November 5, 2019Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto, Youichirou Sugino
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Publication number: 20190310406Abstract: There is provided a polarizing plate excellent in durability. A method of producing a polarizing plate according to an embodiment of the present invention includes: preparing a polarizing film laminate including a polarizer and a protective film arranged on at least one side of the polarizer; and shrinking the polarizing film laminate.Type: ApplicationFiled: June 24, 2019Publication date: October 10, 2019Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto, Youichirou Sugino
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Publication number: 20190243046Abstract: There is provided a polarizer excellent in heat resistance. A polarizer according to an embodiment of the present invention includes a resin film containing iodine, wherein an end portion of the resin film has formed therein a high-concentration portion having a concentration of a substance that forms a counter ion of iodine higher than that of another portion.Type: ApplicationFiled: January 23, 2019Publication date: August 8, 2019Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Daisuke Ogomi, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Hiroki Kuramoto, Youichirou Sugino, Keisuke Kimura
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Publication number: 20190154899Abstract: There is provided a circularly polarizing plate for an organic EL display apparatus, which has an excellent antireflection function and has an excellent organic EL panel-protecting function. A circularly polarizing plate according to the present invention is used in an organic EL display apparatus. The circularly polarizing plate includes in this order: a polarizer; a retardation layer functioning as a ?/4 plate; a barrier layer; and a pressure-sensitive adhesive layer having a barrier function. An angle formed between an absorption axis of the polarizer and a slow axis of the retardation layer is from 35° to 55°.Type: ApplicationFiled: January 3, 2019Publication date: May 23, 2019Applicant: NITTO DENKO CORPORATIONInventors: Takeshi Murashige, Youichirou Sugino, Takami Hikita, Hiroyuki Takemoto, Mariko Hirai
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Patent number: 10215901Abstract: There is provided a polarizer excellent in heat resistance. A polarizer according to an embodiment of the present invention includes a resin film containing iodine, wherein an end portion of the resin film has formed therein a high-concentration portion having a concentration of a substance that forms a counter ion of iodine higher than that of another portion.Type: GrantFiled: October 31, 2016Date of Patent: February 26, 2019Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Daisuke Ogomi, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Hiroki Kuramoto, Youichirou Sugino, Keisuke Kimura
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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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Publication number: 20180284332Abstract: There is provided a circularly polarizing plate for an organic EL display apparatus, which has an excellent antireflection function and has an excellent organic EL panel-protecting function. A circularly polarizing plate according to the present invention is used in an organic EL display apparatus. The circularly polarizing plate includes in this order: a polarizer; a retardation layer functioning as a ?/4 plate; a barrier layer; and a pressure-sensitive adhesive layer having a barrier function. An angle formed between an absorption axis of the polarizer and a slow axis of the retardation layer is from 35° to 55°.Type: ApplicationFiled: November 18, 2015Publication date: October 4, 2018Applicant: NITTO DENKO CORPORATIONInventors: Takeshi Murashige, Youichirou Sugino, Takami Hikita, Hiroyuki Takemoto, Mariko Hirai
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Publication number: 20170123123Abstract: There is provided a polarizing plate excellent in durability A method of producing a polarizing plate according to an embodiment of the present invention includes: preparing a polarizing film laminate including a polarizer and a protective film arranged on at least one side of the polarizer; and shrinking the polarizing film laminate.Type: ApplicationFiled: October 24, 2016Publication date: May 4, 2017Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto, Youichirou Sugino
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Publication number: 20170123125Abstract: There is provided a polarizer excellent in heat resistance. A polarizer according to an embodiment of the present invention includes a resin film containing iodine, wherein an end portion of the resin film has formed therein a high-concentration portion having a concentration of a substance that forms a counter ion of iodine higher than that of another portion.Type: ApplicationFiled: October 31, 2016Publication date: May 4, 2017Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Daisuke Ogomi, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Hiroki Kuramoto, Youichirou Sugino, Keisuke Kimura
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Publication number: 20170123266Abstract: 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: ApplicationFiled: November 2, 2016Publication date: May 4, 2017Applicant: 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: 8854577Abstract: The present invention provides a polarizer protective film capable of suppressing blocking that occurs in taking up the film. The polarizer protective film of the present invention includes a (meth)acrylic resin film and an easy-adhesion layer formed of an easy-adhesive composition including a urethane resin and fine particles. The fine particles include preferably colloidal silica.Type: GrantFiled: June 1, 2009Date of Patent: October 7, 2014Assignees: Nitto Denko Corporation, Nippon Shokubai Co., Ltd.Inventors: Tatsuya Yamasaki, Takeshi Saitou, Hiroyuki Takao, Youichirou Sugino, Yuuji Yamashita
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Patent number: 8824047Abstract: A polarizing plate of the present invention includes a polyvinyl alcohol-based polarizer and transparent protective films provided on both sides of the polarizer with an adhesive layer interposed between the polarizer and each transparent protective film, wherein the transparent protective films each comprise a lactone ring structure-containing (meth)acrylic resin, each one of the transparent protective films has a thickness T1 (?m) of 10 to 35 ?m, and the polarizer has a thickness T2 (?m) which satisfies that the ratio (T2/T1) of T2 to the thickness T1 of each one of the transparent protective films falls within the range of 0.8 to 1.8. The polarizing plate is designed to be thin and can satisfy durability.Type: GrantFiled: October 21, 2008Date of Patent: September 2, 2014Assignees: Nitto Denko Corporation, Nippon Shokubai Co., LtdInventors: Naoki Tomoguchi, Youichirou Sugino, Nobuaki Iwamoto, Megumi Katou
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Patent number: 8817373Abstract: An end face of a polarization plate cut by laser becomes a substantially flat surface having only sloping micro waviness because of having been melted once to be solidified. Since the surface has few stress-concentrated parts that may cause microcracks, this prevents microcracks from easily being produced.Type: GrantFiled: July 3, 2008Date of Patent: August 26, 2014Assignee: Nitto Denko CorporationInventors: Kanto Kobayashi, Kanji Nishida, Naoki Tomoguchi, Youichirou Sugino, Takaichi Amano, Kazuo Kitada
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Patent number: 8698981Abstract: A polarizer that can be used for forming a liquid crystal display or an electroluminescent display with less display irregularities and excellent display characteristics is provided. The polarizer contains a dichroic material in a matrix, and its in-plane retardation at a measurement wavelength providing no absorption is in a range of 950 to 1350 nm. The measurement wavelength is preferably a wavelength that the dichroic material provides no absorption, and it is 1000 nm, for example.Type: GrantFiled: August 28, 2008Date of Patent: April 15, 2014Assignee: Nitto Denko CorporationInventors: Tadayuki Kameyama, Hiroaki Mizushima, Youichirou Sugino, Morimasa Wada
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Patent number: 8475931Abstract: Provided are a polarizer protective film containing a (meth)acrylic resin as a main component and being excellent in adhesion with a polarizer, a polarizing plate including the polarizer protective film and a polarizer which are unlikely to peel off from each other, and an image display apparatus of high quality using the polarizing plate. The polarizer protective film of the present invention includes a coating layer containing a (meth)acrylic resin (B) as a main component on at least one surface of a film containing a (meth)acrylic resin (A) as a main component.Type: GrantFiled: July 19, 2007Date of Patent: July 2, 2013Assignees: Nitto Denko Corporation, Nippon Shokubai Co., Ltd.Inventors: Youichirou Sugino, Tsuyoshi Chiba, Tsutomu Hani, Naoki Tomoguchi