Patents by Inventor Shuuhei Yamamoto
Shuuhei Yamamoto 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: 20220177741Abstract: Provided is a PSA sheet comprising a fabric sheet and a PSA layer laminated on the fabric sheet. The PSA layer comprises a base polymer and a tackifier resin. The base polymer is a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound. The PSA layer has a thickness greater than 100 ?m and less than 190 ?m.Type: ApplicationFiled: February 13, 2020Publication date: June 9, 2022Applicant: NITTO DENKO CORPORATIONInventors: Amane SAWAMURA, Kai OKAHARA, Shuuhei YAMAMOTO
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Publication number: 20220162484Abstract: Provided is a PSA sheet comprising a fabric sheet and a PSA layer laminated on the fabric sheet. The PSA layer comprises a base polymer and a tackifier resin. The base polymer is a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound. The tackifier resin comprises a tackifier resin having a softening point below 120° C. and a tackifier resin having a softening point of 120° C. or higher. The fabric sheet has a thickness of 15 ?m or greater and 50 ?m or less as well as a bulk density of 0.25 g/cm3 or higher and 0.50 g/cm3 or lower.Type: ApplicationFiled: February 13, 2020Publication date: May 26, 2022Applicant: NITTO DENKO CORPORATIONInventors: Kai OKAHARA, Amane SAWAMURA, Shuuhei YAMAMOTO
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Patent number: 11267998Abstract: Provided is a PSA sheet capable of suitably preventing bubble formation caused by outgassing. This invention provides a PSA sheet comprising a PSA layer that forms an adhesive face. In an aging test where the adhesive face is press-bonded to a glass plate and stored at 50° C. for 24 hours, the PSA sheet has at least 5% post-aging non-bonding area Sa, with Sa defined as the ratio of all areas non-bonding to the glass plate relative to the total area of the adhesive face. The non-bonding areas have parts linearly extending along the adhesive face.Type: GrantFiled: May 23, 2018Date of Patent: March 8, 2022Assignee: NITTO DENKO CORPORATIONInventors: Naoaki Higuchi, Shuuhei Yamamoto
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Publication number: 20210292611Abstract: Provided is a PSA sheet capable of suitably preventing bubble formation caused by outgassing. This invention provides a PSA sheet comprising a PSA layer that forms an adhesive face. In an aging test where the adhesive face is press-bonded to a glass plate and stored at 50° C. for 24 hours, the PSA sheet has at least 5% post-aging non-bonding area Sa, with Sa defined as the ratio of all areas non-bonding to the glass plate relative to the total area of the adhesive face. The non-bonding areas have parts linearly extending along the adhesive face.Type: ApplicationFiled: May 23, 2018Publication date: September 23, 2021Applicant: NITTO DENKO CORPORATIONInventors: Naoaki HIGUCHI, Shuuhei YAMAMOTO
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Patent number: 11104826Abstract: Provided is a PSA sheet capable of providing greater air release properties. The present invention provides a release-linered PSA sheet comprising a PSA sheet and a release liner covering an adhesive face of the PSA sheet. The PSA sheet has a coating layer that partially forms the adhesive face. The release liner has an arithmetic average roughness of 0.1 ?m or greater on the PSA sheet side surface.Type: GrantFiled: April 10, 2017Date of Patent: August 31, 2021Assignee: NITTO DENKO CORPORATIONInventors: Shuuhei Yamamoto, Kiichiro Matsushita
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Patent number: 10738242Abstract: A compound and a polymer which can each form a photo-alignment film having excellent ability of controlling alignment, a photo-alignment film obtained using the polymer and an optically anisotropic body and a liquid crystal display element each having the photo-alignment film are provided. A compound represented by the general formula (1). In the formula, P represents a polymerizable group, Z and Z1 represent divalent linking groups, A and A1 represent divalent cyclic groups, and X1 to X5 each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a hydroxy group, a nitro group, a cyano group or an alkyl group having 1 to 40 carbon atoms which may have a substituent, provided that X1, X2, X4 and X5 are not simultaneously hydrogen atoms.Type: GrantFiled: April 16, 2018Date of Patent: August 11, 2020Assignee: DIC CORPORATIONInventors: Fumiaki Kodera, Yoshitaka Saito, Hiroshi Hasebe, Masanao Takashima, Shuuhei Yamamoto, Kouzi Satou, Sayaka Nose, Kazuki Obi, Hiroyuki Itou
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Patent number: 10596792Abstract: Provided is a PSA sheet capable of bringing about good air release properties in mobile electronic applications. The present invention provides a PSA sheet for mobile electronics. The PSA sheet comprises a substrate film and a PSA layer provided to at least one face of the substrate film. The PSA layer has a thickness of 20 ?m or less. The PSA sheet further comprises a coating layer that partially covers the PSA layer surface. The coating layer has a thickness less than 3 ?m.Type: GrantFiled: November 27, 2015Date of Patent: March 24, 2020Assignee: NITTO DENKO CORPORATIONInventors: Shuuhei Yamamoto, Kiichiro Matsushita
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Publication number: 20190144716Abstract: Provided is a PSA sheet capable of providing greater air release properties. The present invention provides a release-linered PSA sheet comprising a PSA sheet and a release liner covering an adhesive face of the PSA sheet. The PSA sheet has a coating layer that partially forms the adhesive face. The release liner has an arithmetic average roughness of 0.1 ?m or greater on the PSA sheet side surface.Type: ApplicationFiled: April 10, 2017Publication date: May 16, 2019Applicant: NITTO DENKO CORPORATIONInventors: Shuuhei YAMAMOTO, Kiichiro MATSUSHITA
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Patent number: 10133109Abstract: Provided is an LCD device having excellent high speed responsiveness. This LCD device contains a polymer or a copolymer in a liquid crystal composition sandwiched between two transparent substrates, at least one of which has an electrode, and the content of the polymer or the copolymer is 1% by mass or greater and less than 40% by mass of the total mass of the liquid crystal composition and the polymer or the copolymer. This LCD device can be applied to various operation modes such as TN, STN, ECB, VA, VA-TN, IPS, FFS, a ? cell, OCB, and cholesteric liquid crystals.Type: GrantFiled: February 12, 2015Date of Patent: November 20, 2018Assignee: DIC CORPORATION (TOKYO)Inventors: Toru Fujisawa, Go Sudo, Shuuhei Yamamoto, Kazunori Maruyama, Haruyoshi Takatsu, Marina Goto, Fumiaki Kodera, Keumhee Jang
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Publication number: 20180230385Abstract: A compound and a polymer which can each form a photo-alignment film having excellent ability of controlling alignment, a photo-alignment film obtained using the polymer and an optically anisotropic body and a liquid crystal display element each having the photo-alignment film are provided. A compound represented by the general formula (1). In the formula, P represents a polymerizable group, Z and Z1 represent divalent linking groups, A and A1 represent divalent cyclic groups, and X1 to X5 each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a hydroxy group, a nitro group, a cyano group or an alkyl group having 1 to 40 carbon atoms which may have a substituent, provided that X1, X2, X4 and X5 are not simultaneously hydrogen atoms.Type: ApplicationFiled: April 16, 2018Publication date: August 16, 2018Applicant: DIC CorporationInventors: Fumiaki Kodera, Yoshitaka Saito, Hiroshi Hasebe, Masanao Takashima, Shuuhei Yamamoto, Kouzi Satou, Sayaka Nose, Kazuki Obi, Hiroyuki Itou
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Patent number: 9902878Abstract: This invention provides a PSA sheet with which degradation of the appearance after its application is efficiently prevented while showing uniform adhesive properties over the entire sheet with greater ease of application. The PSA sheet provided by this invention is an air-impermeable PSA sheet having an adhesive surface. The PSA sheet comprises a PSA layer forming the adhesive surface. In the adhesive surface, at least one groove is formed. The groove runs in a wavy shape in the adhesive surface.Type: GrantFiled: April 22, 2015Date of Patent: February 27, 2018Assignee: NITTO DENKO CORPORATIONInventors: Shuuhei Yamamoto, Hironori Tamai, Kazumichi Kato
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Publication number: 20170335142Abstract: Provided is a PSA sheet capable of bringing about good air release properties in mobile electronic applications. The present invention provides a PSA sheet for mobile electronics. The PSA sheet comprises a substrate film and a PSA layer provided to at least one face of the substrate film. The PSA layer has a thickness of 20 ?m or less. The PSA sheet further comprises a coating layer that partially covers the PSA layer surface. The coating layer has a thickness less than 3 ?m.Type: ApplicationFiled: November 27, 2015Publication date: November 23, 2017Applicant: NITTO DENKO CORPORATIONInventors: Shuuhei YAMAMOTO, Kiichiro MATSUSHITA
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Publication number: 20170306185Abstract: Provided is a masking sheet for anodizing, the masking sheet comprising a substrate having first and second faces, and a PSA layer placed on the first face side of the substrate. Here, the substrate is a non-metal substrate. The elastic modulus Et? of the masking sheet and the thickness Hs of the substrate satisfy the next relation 0.7 N/mm<Et?·Hs3.Type: ApplicationFiled: October 1, 2015Publication date: October 26, 2017Applicant: NITTO DENKO CORPORATIONInventors: Kosuke MORITA, Shuuhei YAMAMOTO, Takafumi HIDA, Shigeki MUTA, Kiichiro MATSUSHITA
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Publication number: 20170292042Abstract: Provided is a masking sheet for chemical solution treatment, the masking sheet comprising a substrate having first and second faces, and a PSA layer placed on the first face side of the substrate. The masking sheet is constituted so that penetration of a chemical solution is visually detectable when inspected from the outer face of the masking sheet.Type: ApplicationFiled: October 1, 2015Publication date: October 12, 2017Applicant: NITTO DENKO CORPORATIONInventors: Kosuke MORITA, Shuuhei YAMAMOTO, Takafumi HIDA, Shigeki MUTA, Kiichiro MATSUSHITA
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Publication number: 20170267897Abstract: Provided is a PSA sheet capable of showing high long-term adhesive strength and good air release properties between the PSA sheet and an adherend. This invention provides a PSA sheet comprising a substrate film and a PSA layer provided to at least one face of the substrate film. The PSA sheet comprises a coating layer partially covering the PSA layer surface, whereby the PSA layer surface has a coating layer-bearing area and a coating layer-free area. The coating layer-free area occupies 70% or more of the PSA layer surface. In a top view of the PSA layer surface, the coating layer-bearing area has a linearly extending part running from one edge to another edge of the PSA layer. The linearly extending part has a width in a range of 0.1 mm to 2 mm.Type: ApplicationFiled: November 27, 2015Publication date: September 21, 2017Applicant: Nitto Denko CorporationInventors: Shuuhei YAMAMOTO, Kiichiro MATSUSHITA
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Publication number: 20170260425Abstract: Provided is a PSA sheet with which good air release properties can be obtained while whose quality can be further enhanced. This invention provides a PSA sheet comprising a substrate film and a PSA layer provided to at least one face of the substrate film. The PSA sheet further comprises a coating layer partially covering the PSA layer surface. The PSA sheet's adhesive is formed of the PSA layer and the coating layer. The coating layer has a linearly extending part running from one edge to another edge of the adhesive face. The linearly extending part has a first face forming the PSA sheet's adhesive face and a second face located on the PSA layer side relative to the first face. The second face of the linearly extending part forms an overall gently curved line in a cross section perpendicularly intersecting the length direction of the linearly extending part.Type: ApplicationFiled: November 27, 2015Publication date: September 14, 2017Applicant: NITTO DENKO CORPORATIONInventors: Shuuhei YAMAMOTO, Kiichiro MATSUSHITA
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Publication number: 20170044404Abstract: Provided is a laminate sheet with which degradation of the appearance after its application can be highly prevented while maintaining good adhesive properties. The laminate sheet provided by this invention is a long laminate sheet having an adhesive surface. The laminate sheet comprises a PSA layer forming the adhesive surface and an air-impermeable substrate sheet supporting the PSA layer. The substrate sheet surface is partially provided with the PSA layer, whereby the substrate sheet surface has a PSA-bearing area and a PSA-free area. The PSA-free area includes at least a strip-shaped area. The strip-shaped area runs at angles intersecting the width-direction edges of the laminate sheet.Type: ApplicationFiled: April 22, 2015Publication date: February 16, 2017Applicant: NITTO DENKO CORPORATIONInventors: Shuuhei YAMAMOTO, Hironori TAMAI, Kazumichi KATO
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Publication number: 20170045765Abstract: Provided is an LCD device having excellent high speed responsiveness. This LCD device contains a polymer or a copolymer in a liquid crystal composition sandwiched between two transparent substrates, at least one of which has an electrode, and the content of the polymer or the copolymer is 1% by mass or greater and less than 40% by mass of the total mass of the liquid crystal composition and the polymer or the copolymer. This LCD device can be applied to various operation modes such as TN, STN, ECB, VA, VA-TN, TPS, FFS, a ? cell, OCB, and cholesteric liquid crystals.Type: ApplicationFiled: February 12, 2015Publication date: February 16, 2017Applicant: DIC CorporationInventors: Toru Fujisawa, Go Sudo, Shuuhei Yamamoto, Kazunori Maruyama, Haruyoshi Takatsu, Marina Goto, Fumiaki Kodera, Keumhee Jang
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Publication number: 20170037283Abstract: This invention provides a PSA sheet with which degradation of the appearance after its application is efficiently prevented while showing uniform adhesive properties over the entire sheet with greater ease of application. The PSA sheet provided by this invention is an air-impermeable PSA sheet having an adhesive surface. The PSA sheet comprises a PSA layer forming the adhesive surface. In the adhesive surface, at least one groove is formed. The groove runs in a wavy shape in the adhesive surface.Type: ApplicationFiled: April 22, 2015Publication date: February 9, 2017Applicant: NITTO DENKO CORPORATIONInventors: Shuuhei YAMAMOTO, Hironori TAMAI, Kazumichi KATO
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Publication number: 20150079388Abstract: This invention provides a polishing pad-fastening pressure-sensitive adhesive sheet capable of tightly fastening a polishing pad. The polishing pad-fastening pressure-sensitive adhesive sheet comprises a pressure-sensitive adhesive layer constituting an adhesive face of the pressure-sensitive adhesive sheet. The adhesive face exhibits a 180° peel strength of 30 N/20 mm or greater relative to a stainless steel plate.Type: ApplicationFiled: September 12, 2014Publication date: March 19, 2015Applicant: NITTO DENKO CORPORATIONInventors: Hiroyuki SUZUKI, Shuuhei YAMAMOTO