Patents by Inventor Shigekazu Takahashi
Shigekazu Takahashi 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: 12006994Abstract: A valve spring includes a nitrided layer, and a core portion that is further inward than the nitrided layer. A chemical composition of the core portion consists of, in mass %, C: 0.53 to 0.59%, Si: 2.51 to 2.90%, Mn: 0.70 to 0.85%, P: 0.020% or less, S: 0.020% or less, Cr: 1.40 to 1.70%, Mo: 0.17 to 0.53%, V: 0.23 to 0.33%, Ca: 0.0001 to 0.0050%, Cu: 0.050% or less, Ni: 0.050% or less, Al: 0.0050% or less, Ti: 0.050% or less, and N: 0.0070% or less, with the balance being Fe and impurities. In the core portion, a number density of V-based precipitates having a maximum diameter ranging from 2 to 10 nm is 500 to 8000 per ?m2, and in the core portion, a numerical proportion of Ca sulfides with respect to a total number of oxide-based inclusions and sulfide-based inclusions is 0.20% or less.Type: GrantFiled: October 15, 2020Date of Patent: June 11, 2024Assignees: NIPPON STEEL CORPORATION, NHK SPRING CO., LTD., NIPPON STEEL SG WIRE CO., LTD.Inventors: Shinya Teramoto, Yutaka Neishi, Michimasa Aono, Shuji Kozawa, Fumio Takahashi, Shigekazu Nishimoto, Mitsuhiro Kondo, Tatsuro Ochi, Shoichi Suzuki
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Patent number: 11986480Abstract: Provided is a novel compound or salt thereof that induces degradation by autophagy of an intracellular molecule. In this compound, a ligand having activity to bind to an intracellular molecule and a structure having activity to induce autophagy of an intracellular molecule are linked via a linker without loss of the activity of the ligand and the structure.Type: GrantFiled: February 2, 2018Date of Patent: May 21, 2024Assignee: TOHOKU UNIVERSITYInventors: Hirokazu Arimoto, Kaori Itto, Daiki Takahashi, Nobuo Cho, Hiroshi Nara, Kenichiro Shimokawa, Taiichi Ohra, Shigekazu Sasaki, Naoki Ishii
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Patent number: 11926767Abstract: An adhesive composition contains an acid anhydride group-containing oil or fat (A) and a curing agent (B) having a reactive group reactive with an acid anhydride group. A laminate is obtained by placing an adhesive layer between a first substrate and a second substrate, and the adhesive layer includes the aforementioned adhesive composition. A package is obtained by forming a bag from a laminate obtained by placing an adhesive layer between a first substrate and a second substrate, and the adhesive layer includes the aforementioned adhesive composition.Type: GrantFiled: February 12, 2020Date of Patent: March 12, 2024Assignee: DIC CORPORATIONInventors: Katsuhiko Okada, Shigekazu Takahashi, Ruiyu Si, Xiao Sun, Zhiqiang Liu
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Publication number: 20240077123Abstract: A valve spring includes a nitrided layer, and a core portion that is further inward than the nitrided layer. A chemical composition of the core portion consists of, in mass %, C: 0.53 to 0.59%, Si: 2.51 to 2.90%, Mn: 0.70 to 0.85%, P: 0.020% or less, S: 0.020% or less, Cr: 1.40 to 1.70%, Mo: 0.17 to 0.53%, V: 0.23 to 0.33%, Ca: 0.0001 to 0.0050%, Cu: 0.050% or less, Ni: 0.050% or less, Al: 0.0050% or less, Ti: 0.050% or less, and N: 0.0070% or less, with the balance being Fe and impurities. In the core portion, a number density of V-based precipitates having a maximum diameter ranging from 2 to 10 nm is 500 to 8000 per ?m2, and in the core portion, a numerical proportion of Ca sulfides with respect to a total number of oxide-based inclusions and sulfide-based inclusions is 0.20% or less.Type: ApplicationFiled: October 15, 2020Publication date: March 7, 2024Inventors: Shinya TERAMOTO, Yutaka NEISHI, Michimasa AONO, Shuji KOZAWA, Fumio TAKAHASHI, Shigekazu NISHIMOTO, Mitsuhiro KONDO, Tatsuro OCHI, Shoichi SUZUKI
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Patent number: 11739242Abstract: Provided are a solvent-free two-component type adhesive capable of guaranteeing a practical packaging property, with an excellent curing property and significantly shortening aging time, a laminated film using the same, and a polyol composition for an adhesive. An adhesive, characterized in comprising a polyisocyanate composition (X) containing a polyisocyanate (A), and a polyol composition (Y) containing a polyol (C) and a tertiary amine compound (B) having multiple hydroxyl groups, as necessary components.Type: GrantFiled: October 27, 2021Date of Patent: August 29, 2023Assignee: DIC CorporationInventors: Makoto Nakamura, Daiki Tomita, Shigekazu Takahashi, Bingbing Liu, Feng Zhao, Zhiqiang Liu
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Publication number: 20230104876Abstract: A lamination method, includes: a first coating step of applying any one of a main agent M and a curing agent H of a two-component curable adhesive as a coating liquid to a first web W1; a second coating step of applying the other one of the main agent M and the curing agent H as a coating liquid to a second web W2; and a bonding step of bonding a coating liquid-coated surface of the first web W1 and a coating liquid-coated surface of the second web W2, and of combining the main agent M and the curing agent H to increase a molecular weight. In addition, in the first coating step and the second coating step, the main agent M or the curing agent H is applied by a gravure coater.Type: ApplicationFiled: March 16, 2021Publication date: April 6, 2023Applicant: DIC CORPORATIONInventors: Shigekazu Takahashi, Choichi Takada, Hidenobu Miura, Ayumi Tsuruoka
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Publication number: 20230079465Abstract: An adhesive composition contains an acid anhydride group-containing oil or fat (A) and a curing agent (B) having a reactive group reactive with an acid anhydride group. A laminate is obtained by placing an adhesive layer between a first substrate and a second substrate, and the adhesive layer includes the aforementioned adhesive composition. A package is obtained by forming a bag from a laminate obtained by placing an adhesive layer between a first substrate and a second substrate, and the adhesive layer includes the aforementioned adhesive composition.Type: ApplicationFiled: February 12, 2020Publication date: March 16, 2023Applicant: DIC CorporationInventors: Katsuhiko Okada, Shigekazu Takahashi, Ruiyu Si, Xiao Sun, Zhiqiang Liu
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Patent number: 11267990Abstract: A method for producing a flexible packaging film including a substrate and a polyurethane adhesive that is applied to the substrate and is a mixture of an A agent and a B agent includes a two-part separate application step that includes bringing a mixture of the A agent and B agent applied to one substrate into contact with a catalyst applied to another substrate and pressing the substrates, wherein the A agent is a polyisocyanate compound, and the B agent is a polyol compound. The polyol compound is preferably a polymer polyol comprising a polyether polyol or a polyester polyol as an essential component.Type: GrantFiled: August 29, 2017Date of Patent: March 8, 2022Assignee: DIC CorporationInventors: Masahiko Ogawa, Shigekazu Takahashi, Choichi Takada, Naoki Ichimura
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Publication number: 20220049140Abstract: Provided are a solvent-free two-component type adhesive capable of guaranteeing a practical packaging property, with an excellent curing property and significantly shortening aging time, a laminated film using the same, and a polyol composition for an adhesive. An adhesive, characterized in comprising a polyisocyanate composition (X) containing a polyisocyanate (A), and a polyol composition (Y) containing a polyol (C) and a tertiary amine compound (B) having multiple hydroxyl groups, as necessary components.Type: ApplicationFiled: October 27, 2021Publication date: February 17, 2022Applicant: DIC CorporationInventors: Makoto Nakamura, Daiki Tomita, Shigekazu Takahashi, Bingbing Liu, Feng Zhao, Zhiqiang Liu
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Patent number: 11180685Abstract: Provided are a solvent-free two-component type adhesive capable of guaranteeing a practical packaging property, with an excellent curing property and significantly shortening aging time, a laminated film using the same, and a polyol composition for an adhesive. An adhesive, characterized in comprising a polyisocyanate composition (X) containing a polyisocyanate (A), and a polyol composition (Y) containing a polyol (C) and a tertiary amine compound (B) having multiple hydroxyl groups, as necessary components.Type: GrantFiled: September 29, 2017Date of Patent: November 23, 2021Assignee: DIC CorporationInventors: Makoto Nakamura, Daiki Tomita, Shigekazu Takahashi, Bingbing Liu, Feng Zhao, Zhiqiang Liu
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Publication number: 20210332275Abstract: Provided is a solventless two-component adhesive having excellent processed appearance and processability while exhibiting excellent adhesive strength even with aging at room temperature (around 25° C.) and in a short period of 12 hours. Provided are a two-component curable adhesive containing a polyisocyanate composition (X) containing a polyisocyanate (A) and a resin composition (Y) containing a polyol (B) as essential components, the two-component curable adhesive satisfying (1) to (3), as well as a laminated film and a packaging body produced using the two-component curable adhesive: (1) a tensile shear adhesive strength (N1) when provided between two bases and after a lapse of 30 minutes after pressure bonding is 0.Type: ApplicationFiled: December 19, 2019Publication date: October 28, 2021Applicant: DIC CorporationInventors: Daiki Tomita, Takao Honma, Shigekazu Takahashi
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Publication number: 20210163788Abstract: A method for producing a flexible packaging film including a substrate and a polyurethane adhesive that is applied to the substrate and is a mixture of an A agent and a B agent includes a two-part separate application step that includes bringing a mixture of the A agent and B agent applied to one substrate into contact with a catalyst applied to another substrate and pressing the substrates, wherein the A agent is a polyisocyanate compound, and the B agent is a polyol compound. The polyol compound is preferably a polymer polyol comprising a polyether polyol or a polyester polyol as an essential component.Type: ApplicationFiled: August 29, 2017Publication date: June 3, 2021Applicants: DIC Corporation, DIC CorporationInventors: Masahiko Ogawa, Shigekazu Takahashi, Choichi Takada, Naoki Ichimura
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Publication number: 20210002530Abstract: Provided are an adhesive including a polyisocyanate composition (X) containing a polyisocyanate (A), and a polyol composition (Y) containing a tertiary amine compound (B) having plural hydroxyl groups, a polyol (C), and an aliphatic cyclic amide compound (D), as essential components, a laminated film using the adhesive, and a method for producing a laminated film including a step of separately applying two components, which includes bringing a polyisocyanate composition (X) containing a polyisocyanate (A) that is applied onto one base material into contact with a polyol composition (Y) containing a tertiary amine compound (B) having plural hydroxyl groups, a polyol (C), and an aliphatic cyclic amide compound (D) that is applied onto the other base material, and performing pressure-bonding.Type: ApplicationFiled: March 19, 2019Publication date: January 7, 2021Applicant: DIC CorporationInventors: Tomoo Okubo, Shigekazu Takahashi, Daiki Tomita
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Publication number: 20200399434Abstract: A method for producing a flexible-packaging film in which a first substrate and a second substrate are laminated with a reactive adhesive of a polyisocyanate composition (X) and a polyol composition (Y) therebetween includes a two-component separate application step in which a liquid mixture applied to the first substrate and including the polyisocyanate composition (X) and the polyol composition (Y), and a catalyst (Z) formed in a dot pattern on the second substrate are brought into contact with each other to achieve contact-bonding together. The substrates are preferably plastic films, metal vapor-deposition films, or metal foils. As the second substrate, a non-oriented film is preferably employed.Type: ApplicationFiled: February 14, 2019Publication date: December 24, 2020Applicant: DIC CorporationInventors: Kiyomi Hata, Shigekazu Takahashi
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Publication number: 20200331249Abstract: According to the lamination apparatus and the lamination method, a fast-curing adhesive can be used and which can improve die quality of a composite film and enables application of a low-viscosity coating liquid. The lamination apparatus 1 includes a first coating unit 12 that applies, as a coating liquid, one of a main agent and a curing agent of a two-component curable adhesive to a first web W1; a second coating unit 14 that applies, as a coating liquid, the other one of the mam agent and the coating agent of the two-component curable adhesive to a second web W2, the other one being the one not applied to the first web W1; and a bonding unit 151 that bonds a coating liquid-applied surface of the first web W1 and a coating liquid-applied surface of the second web together. The second coating unit 14 is a gravure coating machine.Type: ApplicationFiled: October 12, 2018Publication date: October 22, 2020Applicant: DIC CorporationInventors: Shigekazu Takahashi, Choichi Takada, Hidenobu Miura, Shinichi Matsunaga
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Publication number: 20190284457Abstract: Provided are a solvent-free two-component type adhesive capable of guaranteeing a practical packaging property, with an excellent curing property and significantly shortening aging time, a laminated film using the same, and a polyol composition for an adhesive. An adhesive, characterized in comprising a polyisocyanate composition (X) containing a polyisocyanate (A), and a polyol composition (Y) containing a polyol (C) and a tertiary amine compound (B) having multiple hydroxyl groups, as necessary components.Type: ApplicationFiled: September 29, 2017Publication date: September 19, 2019Inventors: Makoto Nakamura, Daiki Tomita, Shigekazu Takahashi, Bingbing Liu, Feng Zhao, Zhiqiang Liu
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Publication number: 20170334183Abstract: Provided are a solvent-free laminating adhesive which enables a laminate after lamination to have a good appearance, and which enables a laminate to maintain a good appearance even when the laminate is formed by high-speed lamination; a cured product of the solvent-free laminating adhesive; a polyol composition for lamination adhesives, which serves as one component of the adhesive; and a multilayer film which uses the adhesive. A solvent-free laminating adhesive composition contains, as essential components, (A) a polyisocyanate component and (B) a polyol component. In the solvent-free laminating adhesive composition, the polyol component (B) contains (b1) castor oil or a hydroxyl group-containing castor oil derivative, and (b2) a polyalkylene glycol having a number average molecular weight of 2,500 to 7,000.Type: ApplicationFiled: February 25, 2016Publication date: November 23, 2017Applicant: DIC CorporationInventors: Ryoji Kimura, Shinichi Ohara, Shigekazu Takahashi, Tadashi Fujii
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Patent number: 7102603Abstract: An antiferroelectric liquid crystal display comprises: an antiferroelectric liquid crystal display element which includes an antiferroelectric liquid crystal that is sandwiched between a pair of substrates having a plurality of scanning electrodes and signal electrodes deposited respectively on the opposing surfaces thereof; and a light source which successively emits a plurality of different colors of light.Type: GrantFiled: October 11, 2002Date of Patent: September 5, 2006Assignee: Citizen Watch Co., Ltd.Inventors: Shinya Kondoh, Shigekazu Takahashi
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Patent number: 6567065Abstract: A ferroelectric liquid crystal display comprises: a ferroelectric liquid crystal display element which includes a ferroelectric liquid crystal that is sandwiched between a pair of substrates having a plurality of scanning electrodes and signal electrodes deposited respectively on the opposing surfaces thereof; and a light source which successively emits a plurality of different colors of light.Type: GrantFiled: September 20, 1999Date of Patent: May 20, 2003Assignee: Citizen Watch Co., Ltd.Inventors: Shinya Kondoh, Shigekazu Takahashi
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Publication number: 20030034944Abstract: An antiferroelectric liquid crystal display comprises: an antiferroelectric liquid crystal display element which includes an antiferroelectric liquid crystal that is sandwiched between a pair of substrates having a plurality of scanning electrodes and signal electrodes deposited respectively on the opposing surfaces thereof; and a light source which successively emits a plurality of different colors of light.Type: ApplicationFiled: October 11, 2002Publication date: February 20, 2003Applicant: Citizen Watch Co., Ltd.Inventors: Shinya Kondoh, Shigekazu Takahashi