Patents by Inventor Koji SHITARA
Koji SHITARA 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: 20230244020Abstract: The multilayer structure used to be deformed by bending with a first member outside, includes the first member, a first adhesive layer, a second member having one surface joined to one surface of the first member at least via the first adhesive layer, a second adhesive layer, and a first structure having one surface joined to the other surface of the second member at least via the second adhesive layer. The first structure includes a third member on a surface in contact with the second adhesive layer, including, on a surface in contact with the second adhesive layer, a layer that is likely to be broken when deformed. Hardness of each of the first and second adhesive layer is determined such that when the multilayer structure is deformed, the extension of the layer likely to be broken is reduced to a value lower than the tensile breaking extension thereof.Type: ApplicationFiled: October 5, 2020Publication date: August 3, 2023Inventors: Takanobu YANO, Shou TAKARADA, Takeshi NAKANO, Koji SHITARA, Yoshitaka SUGITA, Kazutaka MINOURA
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Patent number: 9657197Abstract: A pressure-sensitive adhesive of the invention include a (meth)acryl-based polymer obtained by polymerization of a monomer component including 30 to 99.5% by weight of an alkyl (meth)acrylate having an alkyl group of 10 to 18 carbon atoms at an ester end and 0.5 to 50% by weight of a cyclic nitrogen-containing monomer. The pressure-sensitive adhesive has a satisfactory level of adhesive performance and can form a pressure-sensitive adhesive layer with a lower dielectric constant and reliable moisture resistance.Type: GrantFiled: September 12, 2012Date of Patent: May 23, 2017Assignee: NITTO DENKO CORPORATIONInventors: Masatsugu Higashi, Kiyoe Shigetomi, Koji Shitara, Akiko Tanaka, Katsuhiko Kamiya, Azusa Iseki
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Patent number: 9580624Abstract: The present invention realizes a display device or input device having excellent ultraviolet protection property for the touch panel, display element or the like, while retaining optical characteristics, even when a small amount of or no optical film is used. The pressure-sensitive adhesive sheet of the present invention has a total light transmittance of 85% or more, a light transmittance at a wavelength of 380 nm of 5% or less, and a haze of 3% or less. The pressure-sensitive adhesive sheet preferably includes a pressure-sensitive adhesive layer containing an acrylic polymer and a triazine-based ultraviolet absorber.Type: GrantFiled: March 26, 2015Date of Patent: February 28, 2017Assignee: NITTO DENKO CORPORATIONInventors: Koji Shitara, Hiroko Ikenaga, Hiroaki Kishioka
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Publication number: 20170002235Abstract: A pressure-sensitive adhesive of the invention include a (meth)acryl-based polymer obtained by polymerization of a monomer component including 30 to 99.5% by weight of an alkyl (meth)acrylate having an alkyl group of 10 to 18 carbon atoms at an ester end and 0.5 to 50% by weight of a cyclic nitrogen-containing monomer. The pressure-sensitive adhesive has a satisfactory level of adhesive performance and can form a pressure-sensitive adhesive layer with a lower dielectric constant and reliable moisture resistance.Type: ApplicationFiled: September 15, 2016Publication date: January 5, 2017Applicant: NITTO DENKO CORPORATIONInventors: Masatsugu HIGASHI, Kiyoe SHIGETOMI, Koji SHITARA, Akiko TANAKA, Katsuhiko KAMIYA, Azusa ISEKI
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Publication number: 20150197670Abstract: The present invention realizes a display device or input device having excellent ultraviolet protection property for the touch panel, display element or the like, while retaining optical characteristics, even when a small amount of or no optical film is used. The pressure-sensitive adhesive sheet of the present invention has a total light transmittance of 85% or more, a light transmittance at a wavelength of 380 nm of 5% or less, and a haze of 3% or less. The pressure-sensitive adhesive sheet preferably includes a pressure-sensitive adhesive layer containing an acrylic polymer and a triazine-based ultraviolet absorber.Type: ApplicationFiled: March 26, 2015Publication date: July 16, 2015Applicant: NITTO DENKO CORPORATIONInventors: Koji SHITARA, Hiroko IKENAGA, Hiroaki KISHIOKA
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Patent number: 9045670Abstract: The present invention realizes a display device or input device having excellent ultraviolet protection property for the touch panel, display element or the like, while retaining optical characteristics, even when a small amount of or no optical film is used. The pressure-sensitive adhesive sheet of the present invention has a total light transmittance of 85% or more, a light transmittance at a wavelength of 380 nm of 5% or less, and a haze of 3% or less. The pressure-sensitive adhesive sheet preferably includes a pressure-sensitive adhesive layer containing an acrylic polymer and a triazine-based ultraviolet absorber.Type: GrantFiled: September 27, 2012Date of Patent: June 2, 2015Assignee: NITTO DENKO CORPORATIONInventors: Koji Shitara, Hiroko Ikenaga, Hiroaki Kishioka
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Publication number: 20140248489Abstract: A pressure-sensitive adhesive of the invention include a (meth)acryl-based polymer obtained by polymerization of a monomer component including 30 to 99.5% by weight of an alkyl (meth)acrylate having an alkyl group of 10 to 18 carbon atoms at an ester end and 0.5 to 50% by weight of a cyclic nitrogen-containing monomer. The pressure-sensitive adhesive has a satisfactory level of adhesive performance and can form a pressure-sensitive adhesive layer with a lower dielectric constant and reliable moisture resistance.Type: ApplicationFiled: September 12, 2012Publication date: September 4, 2014Applicant: NITTO DENKO CORPORATIONInventors: Masatsugu Higashi, Kiyoe Shigetomi, Koji Shitara, Akiko Tanaka, Katsuhiko Kamiya, Azusa Iseki
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Publication number: 20140243472Abstract: Provided is a surface protective film including, as an outermost layer, a pressure-sensitive adhesive layer containing a urethane-based pressure-sensitive adhesive as a main component, the surface protective film allowing the contamination of an adherend to be extremely suppressed, and being preferably excellent in wettability and reworkability. The surface protective film of the present invention includes, as an outermost layer, a pressure-sensitive adhesive layer containing, as a main component, a urethane-based pressure-sensitive adhesive containing a polyurethane-based resin; and when a pressure-sensitive adhesive layer side of the surface protective film is attached to a glass plate at 50° C. for 10 days and then the surface protective film is peeled from the glass plate, a residual adhesive strength on the peeled surface side of the glass plate is 3.0 N/19 mm or more.Type: ApplicationFiled: February 11, 2014Publication date: August 28, 2014Applicant: NITTO DENKO CORPORATIONInventors: Souya JO, Koji SHITARA, Noritsugu DAIGAKU, Tadatoshi NAKANISHI, Shou UCHIDA, Shogo SASAKI, Ryohei SAWAZAKI
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Publication number: 20130251990Abstract: A pressure-sensitive adhesive of the invention includes a (meth)acryl-based polymer obtained by polymerization of a monomer component including: an alkyl(meth)acrylate (a1) having a branched alkyl group of 8 to 24 carbon atoms at an ester end; and an alkyl(meth)acrylate (a2) having a linear alkyl group of 8 to 24 carbon atoms at an ester end. The pressure-sensitive adhesive can has a satisfactory level of adhesive performance and can form a pressure-sensitive adhesive layer with a lower dielectric constant.Type: ApplicationFiled: March 20, 2013Publication date: September 26, 2013Applicant: NITTO DENKO CORPORATIONInventors: Masatsugu HIGASHI, Koji SHITARA, Akiko TANAKA, Katsuhiko KAMIYA