Patents by Inventor Masamichi Matsumoto
Masamichi Matsumoto 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: 20230220247Abstract: An object of the present invention is to provide a pressure-sensitive adhesive sheet enables a pressure-sensitive adhesive layer to be formed, wherein the pressure-sensitive adhesive layer has a low dielectric constant, is excellent in level difference conformability while maintaining adhesive strength and adhesion reliability at high temperatures, and suitable for laminating a metal mesh film and the like. The pressure-sensitive adhesive sheet of the present invention is a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer, the pressure-sensitive adhesive layer containing an acrylic polymer (A) and a hydrogenated polyolefinic resin (B) that exhibits liquid flowability at 25° C. The pressure-sensitive adhesive layer has a dielectric constant at a frequency of 1 MHz of from 2.3 to 3.5. The pressure-sensitive adhesive sheet has a 180° peel adhesive strength to a glass plate at a tensile speed of 300 mm/minute at 65° C. of 6 N/20 mm or more.Type: ApplicationFiled: June 9, 2021Publication date: July 13, 2023Applicant: NITTO DENKO CORPORATIONInventors: Hirofumi KATAMI, Masamichi MATSUMOTO, Takahiro NONAKA
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Publication number: 20230220248Abstract: An object of the present invention is to provide a pressure-sensitive adhesive composition that enables a pressure-sensitive adhesive layer to be formed, wherein the pressure-sensitive adhesive layer has a low dielectric constant, is excellent in level difference conformability and transparency while maintaining adhesive strength and adhesion reliability at high temperatures, and suitable for laminating a metal mesh film and the like. The pressure-sensitive adhesive composition of the present invention contains an acrylic polymer (A), a mixture of monomer components constituting the acrylic polymer (A) or a partially polymerized product of a mixture of monomer components constituting the acrylic polymer (A), and a hydrogenated polyolefinic resin (B) that exhibits liquid flowability at 25° C. The pressure-sensitive adhesive composition comprises a branched-chain alkyl group having 10 to 24 carbon atoms as a monomer component.Type: ApplicationFiled: June 9, 2021Publication date: July 13, 2023Applicant: NITTO DENKO CORPORATIONInventors: Hirofumi KATAMI, Masamichi MATSUMOTO, Takahiro NONAKA
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Publication number: 20230099594Abstract: An object of the present invention is to provide a pressure-sensitive adhesive composition that enables a pressure-sensitive adhesive layer to be formed, the pressure-sensitive adhesive layer allowing the appearance of a display device and an input device to be unlikely to deteriorate even under low pressure conditions, a pressure-sensitive adhesive layer, a pressure-sensitive adhesive sheet, an optical member, and a touch panel. The pressure-sensitive adhesive composition of the present invention contains an acrylic polymer (A) and a hydrogenated polyolefinic resin (B). The acrylic polymer (A) contains a (meth)acrylic alkyl ester having an alkyl group having 8 or more carbon atoms as a constituent monomer component. The hydrogenated polyolefinic resin (B) contains a hydrogenated polyolefin.Type: ApplicationFiled: September 23, 2022Publication date: March 30, 2023Applicant: NITTO DENKO CORPORATIONInventors: Masamichi MATSUMOTO, Hirofumi KATAMI, Sho TAKARADA, Ryohei SAWAZAKI, Kazuma MITSUI
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Publication number: 20230102451Abstract: An object of the present invention is to provide a pressure-sensitive adhesive sheet, an optical member, and a touch panel that enable a pressure-sensitive adhesive layer to be formed, the pressure-sensitive adhesive layer allowing the appearance of a display device and an input device to be unlikely to deteriorate even under low pressure conditions. The pressure-sensitive adhesive sheet has a pressure-sensitive adhesive layer, and the number of the voids having a diameter of 300 ?M or more in the following low pressure test is less than 10, and the number of the voids having a diameter of not less than 50 less than 300 ?M in the following low pressure test is less than 20.Type: ApplicationFiled: September 23, 2022Publication date: March 30, 2023Applicant: Nitto Denko CorporationInventors: Masamichi MATSUMOTO, Hirofumi Katami, Sho Takarada, Ryohei Sawazaki, Kazuma Mitsui
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Publication number: 20150290908Abstract: A laminate, comprising: a carrier film for a transparent conductive film comprising a support and a pressure-sensitive adhesive layer provided on at least one side of the support; and a transparent conductive film comprising a transparent conductive layer and a transparent substrate, wherein the support has an in-plane thermal shrinkage S1 of 0.3 to 0.9% when heated at 140° C. for 90 minutes, and the transparent conductive film has an in-plane thermal shrinkage S2 of 0.3 to 0.6% when heated at 140° C. for 90 minutes.Type: ApplicationFiled: November 29, 2013Publication date: October 15, 2015Applicant: NITTO DENKO CORPORATIONInventors: Hiromoto Haruta, Masamichi Matsumoto, Wataru Nagatake
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Publication number: 20150093542Abstract: A carrier film for transparent conductive films, including: a support; and a pressure-sensitive adhesive layer provided on at least one side of the support, wherein the pressure-sensitive adhesive layer has an adhesive surface with an arithmetic mean surface waviness Wa of 70 nm or less opposite to an adhesive surface in contact with the support.Type: ApplicationFiled: December 14, 2012Publication date: April 2, 2015Applicant: NITTO DENKO CORPORATIONInventors: Masamichi Matsumoto, Ikkou Hanaki, Kenta Yamashita
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Publication number: 20150064460Abstract: A carrier film for transparent conductive films of the invention includes a support and a pressure-sensitive adhesive layer provided on at least one side of the support, wherein the pressure-sensitive adhesive layer is made from a pressure-sensitive adhesive composition including: a (meth)acryl-based polymer (A) having a glass transition temperature of ?50° C. or lower and obtained by polymerization of a monomer component containing an alkyl(meth)acrylate and a hydroxyl group-containing monomer; an isocyanate crosslinking agent (B); and a catalyst (C) having an iron active center. The carrier film for transparent conductive films, with which the formation of irregularities on an adherend surface and zipping can be prevented.Type: ApplicationFiled: August 20, 2014Publication date: March 5, 2015Applicant: NITTO DENKO CORPORATIONInventors: Masamichi MATSUMOTO, Tatsumi AMANO, Toru ISEKI, Hiromoto HARUTA
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Publication number: 20130108867Abstract: The present invention provides a methylenebis(fatty acid amide) composition containing as a main component a methylenebis(fatty acid amide) obtained by reacting a fatty acid monoamide with formaldehyde, a content of impurities which consist of the fatty acid monoamide and a fatty acid from which the fatty acid monoamide is constituted is 0 to less than 2 wt %, and a adhesive sheet containing the methylenebis(fatty acid amide) composition.Type: ApplicationFiled: July 7, 2011Publication date: May 2, 2013Applicant: NITTO DENKO CORPORATIONInventors: Shigeki Ishiguro, Takumi Yutou, Hiroki Senda, Masamichi Matsumoto, Yuka Sekiguchi, Aya Nagatomo, Yuji Okawa, Fumiteru Asai, Michihito Ooishi, Toshimasa Sugimura
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Publication number: 20110244160Abstract: An adhesive tape or sheet with a release liner has; a thermoplastic resin film, a pressure sensitive adhesive layer formed on one side of the thermoplastic resin film, and a release liner positioned on one side of the pressure sensitive adhesive layer, a fatty acid bisamide as well as a fatty acid monoamide and/or fatty acid are contained at least one of the thermoplastic resin film and the pressure sensitive adhesive layer.Type: ApplicationFiled: March 29, 2011Publication date: October 6, 2011Applicant: NITTO DENKO CORPORATIONInventors: Shigeki ISHIGURO, Takumi Yutou, Hiroki Senda, Masamichi Matsumoto, Kenichi Nishijima, Ryoko Asai, Yuka Sekiguchi, Yuji Okawa, Michihito Ooishi, Toshimasa Sugimura
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Publication number: 20110244229Abstract: A rolled adhesive tape or sheet which is wound in a rolled configuration having; a thermoplastic resin film, and a pressure sensitive adhesive layer formed on one side of the thermoplastic resin film, a fatty acid bisamide as well as a fatty acid monoamide and/or fatty acid are contained at least one of the thermoplastic resin film and the pressure sensitive adhesive layer.Type: ApplicationFiled: March 29, 2011Publication date: October 6, 2011Applicant: NITTO DENKO CORPORATIONInventors: Shigeki ISHIGURO, Takumi YUTOU, Hiroki SENDA, Masamichi MATSUMOTO, Kenichi NISHIJIMA, Toshitaka SUZUKI, Fumiteru ASAI, Isamu MIYOSHI, Michihito OOISHI, Toshimasa SUGIMURA
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Patent number: 6930177Abstract: The invention provides true La(OiPr)3 preferable as a starting material for an asymmetric synthesis catalyst and a process for producing the same. In this process, anhydrous lanthanum chloride LaCl3 is reacted with potassium isopropoxide K(OiPr) in a mixed solvent of isopropanol and toluene, then the isopropanol is distilled away to replace all the solvent by toluene, then the reaction solution is left, decanted and filtered to give a transparent filtrate, and the solvent is distilled away from the filtrate which is then vacuum-dried under heating, whereby high-purity La(OiPr)3 is obtained in 77% yield. In this high-purity La(OiPr)3, the La content is 97 to 103% of the theoretical content, impurity K is 0.3% or less, (Li+Na) is 0.01% or less, Cl is 0.2% or less, and the degree of association thereof is 5.5 to 6.5.Type: GrantFiled: August 7, 2002Date of Patent: August 16, 2005Assignee: Kabushikikaisha Kojundokagaku KenkyushoInventors: Hidekimi Kadokura, Masamichi Matsumoto, Tadashi Ishii, Yumie Okuhara, Yoshinori Kuboshima, Hiroshi Matsumoto
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Publication number: 20030055228Abstract: The invention provides true La(OiPr)3 preferable as a starting material for an asymmetric synthesis catalyst and a process for producing the same. In this process, anhydrous lanthanum chloride LaCl3 is reacted with potassium isopropoxide K(OiPr) in a mixed solvent of isopropanol and toluene, then the isopropanol is distilled away to replace all the solvent by toluene, then the reaction solution is left, decanted and filtered to give a transparent filtrate, and the solvent is distilled away from the filtrate which is then vacuum-dried under heating, whereby high-purity La(OiPr)3 is obtained in 77% yield. In this high-purity La(OiPr)3, the La content is 97 to 103% of the theoretical content, impurity K is 0.3% or less, (Li+Na) is 0.01% or less, Cl is 0.2% or less, and the degree of association thereof is 5.5 to 6.5.Type: ApplicationFiled: August 7, 2002Publication date: March 20, 2003Inventors: Hidekimi Kadokura, Masamichi Matsumoto, Tadashi Ishii, Yumie Okuhara, Yoshinori Kuboshima, Hiroshi Matsumoto
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Publication number: 20020169335Abstract: This invention provides a process for producing bismuth tertiary amyloxide which is a starting material for forming a ferroelectric film such as SrBi2Ta2O9 containing bismuth oxide, or an oxide superconductive film such as Bi2Sr2CaCu2O8, by the CVD method or sol-gel method. This process comprises reacting bismuth bromide with sodium tertiary amyloxide or potassium tertiary amyloxide in a toluene solvent containing 5 to 30 weight % tetrahydrofuran, then separating a byproduct sodium bromide or potassiumbromide by filtration and recovering bismuth tertiary amyloxide by distillation under reduced pressure.Type: ApplicationFiled: February 20, 2002Publication date: November 14, 2002Inventors: Satoru Morisawa, Masamichi Matsumoto, Hidekimi Kadokura
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Patent number: 6472547Abstract: This invention provides a process for producing bismuth tertiary amyloxide which is a starting material for forming a ferroelectric film such as SrBi2Ta2O9 containing bismuth oxide, or an oxide superconductive film such as Bi2Sr2CaCu2O8, by the CVD method or sol-gel method. This process comprises reacting bismuth bromide with sodium tertiary amyloxide or potassium tertiaryamyloxide in a toluene solvent containing 5 to 30 weight % tetrahydrofuran, then separating a byproduct sodium bromide or potassium bromide by filtration and recovering bismuth tertiary amyloxide by distillation under reduced pressure.Type: GrantFiled: February 20, 2002Date of Patent: October 29, 2002Assignee: Kabushikikaisha Kojundokagaku KenyushoInventors: Satoru Morisawa, Masamichi Matsumoto, Hidekimi Kadokura
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Patent number: 5932281Abstract: A method of forming a Bi-layered ferroelectric thin film on a substrate with good reproducibility, using a mixed composition of a Bi-containing organic compound and a metal polyalkoxide compound by at least one technique selected from the group consisting of molecular deposition such as CVD, and spincoat-sintering.Type: GrantFiled: May 9, 1997Date of Patent: August 3, 1999Assignees: Matsushita Electronics Corporation, Kojundo Chemical Laboratory Co., Ltd., Symetrix CorporationInventors: Yukoh Hochido, deceased, Hidekimi Kadokura, Masamichi Matsumoto, Koji Arita, Masamichi Azuma, Tatsuo Otsuki