Patents Assigned to Kyoritsu Chemical & Co., Ltd.
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Patent number: 11806805Abstract: A object cutting method includes a first step of attaching an expandable sheet to a front surface or a back surface of a object, a second step of irradiating the object with a laser light along a line to cut to form a modified region, and expanding the expandable sheet to divide at least a part of the object into a plurality of chips and to form a gap that exists between the chips and extends to a side surface crossing the front surface and the back surface of the object, a third step of, after the second step, filling the gap with a resin from an outer edge portion including the side surface of the object, a fourth step of, after the third step, curing and shrinking the resin, and a fifth step of, after the fourth step, taking out the chips from the expandable sheet.Type: GrantFiled: May 17, 2018Date of Patent: November 7, 2023Assignees: Kyoritsu Chemical & Co., Ltd., HAMAMATSU PHOTONICS K.K.Inventors: Mikiharu Kuchiki, Hidefumi Kinda, Daisuke Kurita, Takeshi Sakamoto, Takafumi Ogiwara, Yuta Kondoh, Naoki Uchiyama
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Publication number: 20230343646Abstract: A workpiece cutting method includes: a first step of pasting an expandable sheet on a workpiece; a second step of irradiating, after the first step, the workpiece with laser light to form a modified region and expanding the expandable sheet to divide the workpiece into a plurality of chips, and meanwhile, to form a gap disposed between the plurality of chips and extending to a side surface of the workpiece; a third step of irradiating the expandable sheet with an ultraviolet light after the first step; a fourth step of filling, after the second step and the third step, the gap with resin from an outer edge part of the workpiece including the side surface; a fifth step of curing the resin after the fourth step; and a sixth step of taking out the chips from above the expandable sheet after the fifth step.Type: ApplicationFiled: February 5, 2021Publication date: October 26, 2023Applicants: Kyoritsu Chemical & Co., Ltd., HAMAMATSU PHOTONICS K.K.Inventors: Daisuke KURITA, Yasunobu MATSUMOTO, Takeshi SAKAMOTO, Iku SANO
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Publication number: 20230321657Abstract: Disclosed is a specimen analysis cartridge that includes: a first base having a micro flow path formed in at least one surface; a second base disposed so as to oppose a surface at which the micro flow path of the first base is formed; and a photocurable resin layer for adhering the first base and the second base to each other, and the first base and the second base each contain at least one of cycloolefin polymer and cycloolefin copolymer.Type: ApplicationFiled: April 7, 2023Publication date: October 12, 2023Applicants: SYSMEX CORPORATION, Creative Nanosystems Corporation, KYORITSU CHEMICAL & CO., LTD.Inventors: Kazuyoshi HORII, Shun NAKAMOTO, Koki HOSHIKAWA, Katsunori OSHIMA, Koji TSUJITA, Wataru KUZUTA, Tomoyuki HOSOYA, Yo TODA, Masahiro MORIMOTO
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Publication number: 20200180075Abstract: A object cutting method includes a first step of attaching an expandable sheet to a front surface or a back surface of a object, a second step of irradiating the object with a laser light along a line to cut to form a modified region, and expanding the expandable sheet to divide at least a part of the object into a plurality of chips and to form a gap that exists between the chips and extends to a side surface crossing the front surface and the back surface of the object, a third step of, after the second step, filling the gap with a resin from an outer edge portion including the side surface of the object, a fourth step of, after the third step, curing and shrinking the resin, and a fifth step of, after the fourth step, taking out the chips from the expandable sheet.Type: ApplicationFiled: May 17, 2018Publication date: June 11, 2020Applicants: Kyoritsu Chemical & Co., Ltd., HAMAMATSU PHOTONICS K.K.Inventors: Mikiharu KUCHIKI, Hidefumi KINDA, Daisuke KURITA, Takeshi SAKAMOTO, Takafumi OGIWARA, Yuta KONDOH, Naoki UCHIYAMA
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Patent number: 10059838Abstract: The present invention provides a curable composition for a hard disk drive, the composition comprising: a compound (component A1) having an ethylenically unsaturated group and having no epoxy group and a compound (component A2) having an ethylenically unsaturated group and an epoxy group, or the component A2 and a compound (component A3) having an epoxy group and having no ethylenically unsaturated group, or the component A1 and the component A3, or the component A1, the component A2, and the component A3, or the component A2; a photo-radical polymerization initiator (component B); and a compound (component C) capable of causing the epoxy group to undergo polymerization, and a method for producing a hard disk drive, which comprises the step of bonding a part to a magnetic head portion using the composition.Type: GrantFiled: July 18, 2013Date of Patent: August 28, 2018Assignee: KYORITSU CHEMICAL & CO., LTD.Inventor: Yuta Hara
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Publication number: 20180036805Abstract: A method for producing coated copper particles having a surface coated with an aliphatic carboxylic acid, wherein the method comprises obtaining a reaction mixture containing copper formate, an amino alcohol, an aliphatic carboxylic acid having an aliphatic group having 5 or more carbon atoms, and a solvent, and subjecting a complex compound formed in the reaction mixture to thermal decomposition treatment to form metal copper, wherein a ?SP value, which is a difference in SP value between the amino alcohol and the solvent, is 4.2 or more.Type: ApplicationFiled: August 24, 2017Publication date: February 8, 2018Applicant: KYORITSU CHEMICAL & CO., LTD.Inventors: Kunihiro Fukumoto, Yu Oyama
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Patent number: 9744595Abstract: A method for producing coated copper particles having a surface coated with an aliphatic carboxylic acid, wherein the method comprises obtaining a reaction mixture containing copper formate, an amino alcohol, an aliphatic carboxylic acid having an aliphatic group having 5 or more carbon atoms, and a solvent, and subjecting a complex compound formed in the reaction mixture to thermal decomposition treatment to form metal copper, wherein a ?SP value, which is a difference in SP value between the amino alcohol and the solvent, is 4.2 or more.Type: GrantFiled: May 14, 2015Date of Patent: August 29, 2017Assignee: KYORITSU CHEMICAL & CO., LTD.Inventors: Kunihiro Fukumoto, Yu Oyama
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Publication number: 20170043404Abstract: A method for producing coated copper particles having a surface coated with an aliphatic carboxylic acid, wherein the method comprises obtaining a reaction mixture containing copper formate, an amino alcohol, an aliphatic carboxylic acid having an aliphatic group having 5 or more carbon atoms, and a solvent, and subjecting a complex compound formed in the reaction mixture to thermal decomposition treatment to form metal copper, wherein a ?SP value, which is a difference in SP value between the amino alcohol and the solvent, is 4.2 or more.Type: ApplicationFiled: May 14, 2015Publication date: February 16, 2017Applicant: KYORITSU CHEMICAL & CO., LTD.Inventors: Kunihiro Fukumoto, Yu Oyama
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Patent number: 9564638Abstract: A battery electrode or separator surface protective agent composition having fluidity and being capable of being solidified by hot melt, and comprising at least two types of organic particles comprising organic materials, wherein the organic particles of types different from each other are substantially incompatible with each other, wherein when the composition is solidified by hot melt, the organic particles of the same type thermally fuse with one another to form a continuous phase.Type: GrantFiled: December 12, 2011Date of Patent: February 7, 2017Assignee: KYORITSU CHEMICAL & CO., LTD.Inventor: Taichi Uemura
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Patent number: 9550910Abstract: This is to provide an aqueous metal surface treatment agent for a lithium ion secondary battery which can improve interlaminar adhesiveness between a metal member and a resin coating layer such as a film or a coated film, and solvent resistance without using trivalent chromium. The aqueous metal surface treatment agent for a lithium ion secondary battery comprises a polyvinyl alcohol resin containing 2 to 15 mol % of a 1,2-diol structural unit represented by the formula (1): Having a degree of saponification of 90 to 99.9 mol % and an average degree of polymerization of 250 to 3000; and a metallic crosslinking agent.Type: GrantFiled: December 3, 2015Date of Patent: January 24, 2017Assignees: KYORITSU CHEMICAL & CO., LTD., THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Takahiro Minowa, Hiroyuki Tanaka, Satoshi Yamazaki, Mitsuo Shibutani
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Patent number: 9546306Abstract: The present invention provides a cationically curable resin composition for assembling hard disk devices which comprises a resin having a cationically polymerizable functional group (a component A) and a cationic polymerization initiator (a component B), the component B being at least one selected from the group consisting of X+(SbF6)?(B1), X+(B(C6F5)4)?(B2) and X+((Rf)nPF6-n)?(B3) (in the formulae, X+ is iodonium or sulfonium, Rf is a fluorinated alkyl having 1 to 6 carbon atoms, and n is an integer of 1 to 6). The invention also provides a hard disk device manufacturing method using the composition, and a hard disk device assembled with the composition.Type: GrantFiled: November 20, 2012Date of Patent: January 17, 2017Assignee: KYORITSU CHEMICAL & CO., LTD.Inventors: Shigeki Toyama, Yoshitomo Denpou
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Patent number: 9512323Abstract: A task of the present invention is to solve the problem in that the conductive undercoating agent composition for coating a current collector has so poor electrochemical durability that the conductive undercoating agent composition is peeled off the current collector after a long-term reliability test. A conductive undercoating agent composition for a current collector for a battery or electrical double layer capacitor, which comprises a polymer having a substituent capable of bonding to an active hydrogen group, inorganic particles having an active hydrogen group, and a conductive agent.Type: GrantFiled: October 21, 2011Date of Patent: December 6, 2016Assignee: KYORITSU CHEMICAL & CO., LTD.Inventor: Taichi Uemura
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Publication number: 20160172678Abstract: The present invention provides a binder that can form a layer that does not reduce high-speed charge/discharge characteristics of a non-aqueous electricity storage element while improving adhesive properties with respect to a substrate such as an electrode or a separator. A binder for a non-aqueous electricity storage element comprising a binder containing a polymer represented by formula (1); a non-aqueous electricity storage element electrode, separator, or current collector in which the binder is used; and a non-aqueous electricity storage element provided with at least one of the non-aqueous electricity storage element electrode, separator, or current collector.Type: ApplicationFiled: July 30, 2014Publication date: June 16, 2016Applicant: KYORITSU CHEMICAL & CO., LTD.Inventors: Naoto Oyama, Taichi Uemura
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Publication number: 20160141625Abstract: A coating agent composition for battery electrode or separator, comprises a vinyl alcohol copolymer having a structural unit represented by the general formula (1), and an aqueous emulsion of a synthetic resin obtained by polymerizing a copolymerizable monomer having an acrylic monomer as a main component, or an aqueous emulsion of a styrene thermoplastic elastomer.Type: ApplicationFiled: January 21, 2016Publication date: May 19, 2016Applicants: KYORITSU CHEMICAL & CO., LTD., THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Taichi Uemura, Satoshi Yamazaki, Mitsuo Shibutani, Kazuo Aiba
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Patent number: 9315680Abstract: A conductive composition for coating a current collector of coating a current collector for a battery or an electrical double layer capacitor, where the adhesion properties between a battery current collector and an active material layer are increased to improve the battery characteristics is presented. A battery using the battery current collector using the composition is also presented. The conductive composition for coating the current collector includes a vinylsilane copolymer, a polycarboxylic acid, and a conductive auxiliary. The formulation of the vinylsilane copolymer is also presented.Type: GrantFiled: August 25, 2011Date of Patent: April 19, 2016Assignee: KYORITSU CHEMICAL & CO., LTD.Inventor: Taichi Uemura
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Publication number: 20160083608Abstract: This is to provide an aqueous metal surface treatment agent for a lithium ion secondary battery which can improve interlaminar adhesiveness between a metal member and a resin coating layer such as a film or a coated film, and solvent resistance without using trivalent chromium. The aqueous metal surface treatment agent for a lithium ion secondary battery comprises a polyvinyl alcohol resin containing 2 to 15 mol % of a 1,2-diol structural unit represented by the formula (1): Having a degree of saponification of 90 to 99.9 mol % and an average degree of polymerization of 250 to 3000; and a metallic crosslinking agent.Type: ApplicationFiled: December 3, 2015Publication date: March 24, 2016Applicants: KYORITSU CHEMICAL & CO., LTD., THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Takahiro Minowa, Hiroyuki Tanaka, Satoshi Yamazaki, Mitsuo Shibutani
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Patent number: 9181439Abstract: A coating formulation for forming a conductive coating film on a surface of a collector for constructing an electrode plate for an electricity storage device is provided. The coating formulation contains (A) a polymeric acid, (B) a vinyl carboxylate copolymer represented by the following formula (1): wherein R1 is selected from the group consisting of H, Na, organic groups derived from vinyl carboxylate monomers, and cations capable of forming electrolytes for the electricity storage device, R2 to R4 are independently selected from the group consisting of H, Na, C1-C6 alkyl groups, and cations capable of forming electrolytes for the electricity storage device, and a ratio (m/n) of m to n is from 0.0001 to 1, (C) a conductive material, and (D) a polar solvent.Type: GrantFiled: February 14, 2013Date of Patent: November 10, 2015Assignees: Kyoritsu Chemical & Co., Ltd., Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Taichi Uemura, Nobuyuki Kobayashi, Takanori Sannan, Shinya Tsuchida, Seiji Doi, Yosuke Ichinomiya, Yoshihiko Iijima
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Patent number: 8936839Abstract: The present invention provides a display panel with a flat plate in which a member partially provided with a light blocking part is disposed in front of a display panel, and a curable resin therebetween is sufficiently cured even in an area behind the light blocking part. The display panel with a flat plate of the present invention includes: a flat plate provided with a light passing part and a light blocking part; a display panel; and an adhesive layer between the flat plate and the display panel, the adhesive layer being a cured resin layer obtainable by polymerization involving at least one reactive component selected from the group consisting of a (meth)acrylate oligomer, a bicyclic ring-containing (meth)acrylate monomer, and a hydroxyl group-containing (meth)acrylate monomer, a peroxide component, and a primer as reaction materials.Type: GrantFiled: January 18, 2012Date of Patent: January 20, 2015Assignees: Sharp Kabushiki Kaisha, Kyoritsu Chemical & Co., Ltd.Inventors: Akiyoshi Fujii, Tokio Taguchi, Chiaki Minari, Takashi Yoshizawa, Katsuhisa Senda, Kenta Ishino, Eishi Katakami, Tsubasa Shiine
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Publication number: 20140316081Abstract: The present invention provides a cationically curable resin composition for assembling hard disk devices which comprises a resin having a cationically polymerizable functional group (a component A) and a cationic polymerization initiator (a component B), the component B being at least one selected from the group consisting of X+(SbF6)?(B1), X+(B(C6F5)4)?(B2) and X+((Rf)nPF6-n)?(B3) (in the formulae, X+ is iodonium or sulfonium, Rf is a fluorinated alkyl having 1 to 6 carbon atoms, and n is an integer of 1 to 6). The invention also provides a hard disk device manufacturing method using the composition, and a hard disk device assembled with the composition.Type: ApplicationFiled: November 20, 2012Publication date: October 23, 2014Applicant: KYORITSU CHEMICAL & CO., LTD.Inventors: Shigeki Toyama, Yoshitomo Denpou
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Patent number: 8815406Abstract: The present invention provides a display panel equipped with a front plate and a display device, in each of which streak unevenness is sufficiently resolved in the periphery of a display area. The display panel equipped with a front plate of the present invention comprises: a display panel; a front plate; and a cured resin composition layer disposed between the display panel and the front plate, wherein the cured resin composition layer has a loss tangent of 2 or less at 0 to 70° C.Type: GrantFiled: June 14, 2011Date of Patent: August 26, 2014Assignees: Sharp Kabushiki Kaisha, Kyoritsu Chemical Co., Ltd.Inventors: Akiyoshi Fujii, Tokio Taguchi, Chiaki Minari, Takashi Yoshizawa, Katsuhisa Senda, Mitsutoshi Naito, Eishi Katakami, Tsubasa Shiine