Patents by Inventor Yo Yamato
Yo Yamato 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: 20230099980Abstract: Provide are an ionic liquid composition for a carbon dioxide separation membrane, a carbon dioxide separation membrane retaining the composition in voids, and a carbon dioxide concentration apparatus provided with the carbon dioxide separation membrane that can be used to separate carbon dioxide from high partial pressure to low partial pressure. The permeability of CO2 and CO2 selectivity ratio of the carbon dioxide separation membrane can be improved, and carbon dioxide from high partial pressure to a low partial pressure of 1 kPa or lower can be selectively separated and recycled by using an ionic liquid composition prepared by combining: an ionic liquid (I) that is an aminium having one or more primary or secondary amino groups and an ethylenediamine or propylenediamine backbone in the cation; and an ionic liquid (II) in which the cation has no primary or secondary amino group and the anion is an oxoacid anion.Type: ApplicationFiled: February 16, 2021Publication date: March 30, 2023Inventors: Takashi MAKINO, Mitsuhiro KANAKUBO, Masao IWAYA, Yo YAMATO
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Publication number: 20220347367Abstract: Provided is a blood filter that resists deterioration in properties as a result of electron beam sterilization treatment performed before or during use as a blood filter, has durability, dimensional stability, and chemical resistance at excellent levels, also has biocompatibility, and resists deterioration in properties even upon the electron beam sterilization treatment. The blood filter according to the present invention includes a nonwoven fabric made of PEEK fibers. Preferably, the blood filter according to the present invention has an average pore size of 3 to 280 ?m and has a porosity of 15% to 70%; and the PEEK fibers have an average fiber diameter of 10 ?m or less.Type: ApplicationFiled: July 15, 2022Publication date: November 3, 2022Applicant: DAICEL CORPORATIONInventors: Takashi ARAI, Yo YAMATO, Koji NAKANE, Naoki SHIMADA, Hanako ASAI
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Patent number: 11419970Abstract: Provided is a blood filter that resists deterioration in properties as a result of electron beam sterilization treatment performed before or during use as a blood filter, has durability, dimensional stability, and chemical resistance at excellent levels, also has biocompatibility, and resists deterioration in properties even upon the electron beam sterilization treatment. The blood filter according to the present invention includes a nonwoven fabric made of PEEK fibers. Preferably, the blood filter according to the present invention has an average pore size of 3 to 280 ?m and has a porosity of 15% to 70%; and the PEEK fibers have an average fiber diameter of 10 ?m or less.Type: GrantFiled: December 22, 2017Date of Patent: August 23, 2022Assignee: DAICEL CORPORATIONInventors: Takashi Arai, Yo Yamato, Koji Nakane, Naoki Shimada, Hanako Asai
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Patent number: 11344653Abstract: Provided is a bone fixation material that does not deteriorate in properties even by an electron beam sterilization treatment performed before or during use as a bone fixation material, has fatigue resistance, wear resistance, and dimensional stability at excellent levels, also has biocompatibility, and offers excellent osteoconnectivity. The bone fixation material according to the present invention includes a nonwoven fabric made of PEEK fibers. The bone fixation material according to the present invention preferably has an average pore size of 3 to 280 ?m and preferably has a porosity of 15% to 70%. The PEEK fibers preferably have an average fiber diameter of 10 ?m or less.Type: GrantFiled: December 22, 2017Date of Patent: May 31, 2022Assignee: DAICEL CORPORATIONInventors: Takashi Arai, Yo Yamato, Koji Nakane, Naoki Shimada, Hanako Asai
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Publication number: 20200306414Abstract: Provided is a bone fixation material that does not deteriorate in properties even by an electron beam sterilization treatment performed before or during use as a bone fixation material, has fatigue resistance, wear resistance, and dimensional stability at excellent levels, also has biocompatibility, and offers excellent osteoconnectivity. The bone fixation material according to the present invention includes a nonwoven fabric made of PEEK fibers. The bone fixation material according to the present invention preferably has an average pore size of 3 to 280 ?m and preferably has a porosity of 15% to 70%. The PEEK fibers preferably have an average fiber diameter of 10 ?m or less.Type: ApplicationFiled: December 22, 2017Publication date: October 1, 2020Applicant: DAICEL CORPORATIONInventors: Takashi ARAI, Yo YAMATO, Koji NAKANE, Naoki SHIMADA, Hanako ASAI
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Publication number: 20200129688Abstract: Provided is a blood filter that resists deterioration in properties as a result of electron beam sterilization treatment performed before or during use as a blood filter, has durability, dimensional stability, and chemical resistance at excellent levels, also has biocompatibility, and resists deterioration in properties even upon the electron beam sterilization treatment. The blood filter according to the present invention includes a nonwoven fabric made of PEEK fibers. Preferably, the blood filter according to the present invention has an average pore size of 3 to 280 ?m and has a porosity of 15% to 70%; and the PEEK fibers have an average fiber diameter of 10 ?m or less.Type: ApplicationFiled: December 22, 2017Publication date: April 30, 2020Applicant: DAICEL CORPORATIONInventors: Takashi ARAI, Yo YAMATO, Koji NAKANE, Naoki SHIMADA, Hanako ASAI
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Publication number: 20190036094Abstract: The present invention provides a secondary battery including a separator which is better in heat resistance than conventional polyolefin-based separators for secondary batteries so that safety can be improved, and which has a low electric resistance while maintaining insulation. It is also an object of the present invention to provide a secondary battery that is excellent in wettability for electrolytic solution, and excellent in productivity in an assembling step of the secondary battery.Type: ApplicationFiled: November 30, 2016Publication date: January 31, 2019Applicant: DAICEL CORPORATIONInventors: Yo YAMATO, Masao IWAYA
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Publication number: 20150306539Abstract: Disclosed is a microporous laminated membrane including a nonwoven-fabric substrate and a microporous membrane. The microporous membrane is disposed on at least one side of the nonwoven-fabric substrate. The microporous membrane includes a multiplicity of interconnecting micropores. The micropores have an average pore diameter of from 0.01 to 10 ?m. The microporous membrane has an arithmetic mean surface roughness Sa of 0.5 ?m or less. The microporous laminated membrane has an air permeability of from 0.5 to 30 seconds. The microporous laminated membrane has a tensile strength of 4.0 N/15 mm or more. The microporous laminated membrane does not undergo interfacial peeling between the substrate and the microporous membrane as a result of a tape peel test.Type: ApplicationFiled: March 17, 2015Publication date: October 29, 2015Applicant: DAICEL CORPORATIONInventor: Yo YAMATO
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Patent number: 8613821Abstract: Provided is a basic metal nitrate suitable as an oxidizing agent for a gas generating agent, which is a basic metal nitrate having a good thermal stability and meeting at least one requirement of the following (a) to (d): (a) a particle diameter of 0.5 to 40 ?m; (b) a degree of crystallinity having 0.4 deg or less of a half band width of the peak in the X-ray analysis; (c) an initiation temperature of weight loss being 220° C. or higher according to TG-DTA analysis; and (d) an impurity content of 1,000 ppm or less based on Na atom. Further provided is a gas generating composition which has a low toxicity, a high burning rate and a low combustion temperature and which is used in a gas generator for an air bag. The gas generating composition comprises (a) tetrazole derivatives, guanidine derivatives or a mixture thereof, (b) a basic metal nitrate and (c) a binder and/or a slag-forming agent.Type: GrantFiled: September 8, 2010Date of Patent: December 24, 2013Assignee: Daicel Chemical Industries, Ltd.Inventors: Xingxi Zhou, Kazuyuki Matsuoka, Jianzhou Wu, Yo Yamato, Takeshi Takahori, Kaoru Yamazaki
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Publication number: 20130020117Abstract: A layered body which includes a porous layer. The layered body having improved properties, such as adhesion between its substrate and its porous layer by the formation of a crosslinked structure; a functional laminate using the porous layer layered body; and a production processes thereof. The layered body includes a base and the porous layer on at least one surface of the base. The base is a resin film made of at least one resin material of polyimide resins, polyamideimide resins, polyamide resins, and polyetherimide resins, or is a metal foil piece, and the porous layer is made of a composition containing at least one polymer of polyimide resins, polyamideimide resins, polyamide resins, and polyetherimide resins as a main component, and a crosslinking agent. Additionally, the porous layer has fine pores having an average pore diameter of 0.01 to 10 ?m, and a porosity of 30 to 85%.Type: ApplicationFiled: December 1, 2010Publication date: January 24, 2013Applicant: DAICEL CORPORATIONInventor: Yo Yamato
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Patent number: 8294040Abstract: [Object] To provide a multilayer assembly that excels in pore properties, is flexible, and is satisfactorily handled and processed; and a method of producing the multilayer assembly. [Solving Means] A multilayer assembly includes a base and, arranged on at least one side thereof, a porous layer and has a large number of continuous micropores with an average pore diameter of 0.01 to 10 ?m. The multilayer assembly suffers from no interfacial delamination between the base and the porous layer when examined in a tape peeling test according to the following procedure: Tape Peeling Test A 24-mm wide masking tape [Film Masking Tape No. 603 (#25)] supplied by Teraoka Seisakusho Co., Ltd. is applied to a surface of the porous layer of the multilayer assembly and press-bonded thereto with a roller having a diameter of 30 mm and a load of 200 gf to give a sample; and the sample is subjected to a T-peel test with a tensile tester at a peel rate of 50 mm/min.Type: GrantFiled: February 16, 2007Date of Patent: October 23, 2012Assignee: Daicel Chemical Industries, Ltd.Inventors: Kiyoshi Shimizu, Yo Yamato
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Publication number: 20120027342Abstract: Provided is a cationically polymerizable resin composition which has a low viscosity, is easy to work, and is extremely rapidly cured upon irradiation with light to give a cured product excellent in optical transparency, flexibility, thermal stability, and post-heating bendability. The cationically polymerizable resin composition includes an oxetane-ring-containing vinyl ether compound (A) and/or an alicyclic-epoxy-group-containing vinyl ether compound (B); an oligomer or polymer (C) containing, in the molecule, at least one selected from oxetane group, epoxy group, hydroxyl group, vinyl ether group, and an aliphatic or alicyclic unsaturated hydrocarbon group and having a molecular weight of 500 or more; and an oxetane compound (D) containing no vinyl ether group and having 6 or more carbon atoms.Type: ApplicationFiled: March 30, 2010Publication date: February 2, 2012Inventors: Tsukasa Yoshida, Yoshinori Funaki, Yo Yamato
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Publication number: 20110081527Abstract: The present invention provides a layered product having a porous layer made mainly of a polymer on a base, and a process for producing the same; and a functional layered product wherein a pattern of a functional material, such as an conductive material, is formed onto a light-transmitting base using the layered product having the porous layer, and a process for producing the functional layered product. A layered product comprising a base and a porous layer on at least one surface of the base, wherein the porous layer is constituted of a composition containing a polymer as a main component, the porous layer has micropores having an average pore diameter of 0.01 to 10 ?m, and has a porosity of 30 to 85%, the composition constituting the porous layer has a glass transition temperature of 20° C. or higher, and the porous layer is a layer which is convertible to a transparent layer by a heat treatment through disappearance of the micropores.Type: ApplicationFiled: June 9, 2009Publication date: April 7, 2011Inventor: Yo Yamato
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Publication number: 20100326574Abstract: Provided is a basic metal nitrate suitable as an oxidizing agent for a gas generating agent, which is a basic metal nitrate having a good thermal stability and meeting at least one requirement of the following (a) to (d): (a) a particle diameter of 0.5 to 40 ?m; (b) a degree of crystallinity having 0.4 deg or less of a half band width of the peak in the X-ray analysis; (c) an initiation temperature of weight loss being 220° C. or higher according to TG-DTA analysis; and (d) an impurity content of 1,000 ppm or less based on Na atom. Further provided is a gas generating composition which has a low toxicity, a high burning rate and a low combustion temperature and which is used in a gas generator for an air bag. The gas generating composition comprises (a) tetrazole derivatives, guanidine derivatives or a mixture thereof, (b) a basic metal nitrate and (c) a binder and/or a slag-forming agent.Type: ApplicationFiled: September 8, 2010Publication date: December 30, 2010Inventors: Xingxi Zhou, Kazuyuki Matsuoka, Jianzhou Wu, Yo Yamato, Takeshi Takahori, Kaoru Yamazaki
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Patent number: 7829186Abstract: A porous film with chemical resistance of this invention includes a porous film base covered with a chemical-resistant polymeric compound and has a multiplicity of communicating micropores having an average pore size of 0.01 to 10 ?m. The chemical-resistant polymeric compound can be, for example, any of phenolic resins, urea resins, melamine resins, benzoguanamine resins, polyimide resins, epoxy resins, benzoxazine resins, polypropylene resins, polyurethane resins, fluororesins, alkyd resins, cellulose acetate resins, phthalic resins, maleic resins, and silicone resins.Type: GrantFiled: September 15, 2004Date of Patent: November 9, 2010Assignee: Daicel Chemical Industries, Ltd.Inventors: Yo Yamato, Michio Tsuyumoto
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Patent number: 7820281Abstract: A porous film of the invention is a porous film having a large number of continuous micropores. The film has a thickness of 5 to 200 ?m, has an average surface pore size A of 0.01 to 10 ?m, an average surface porosity C, and has an average inside pore size B and an average inside porosity D. The ratio A/B of A to B is 0.3 to 3. The porous film is produced by casting a polymer solution containing a polymer onto a substrate to form a film and subjecting the film to phase conversion to thereby form a porous film. In the method, the polymer constituting the porous film has a surface tension Sa [mN/m], the substrate has a surface tension Sb [mN/m], and Sa and Sb satisfy the following condition: Sa?Sb??10.Type: GrantFiled: August 19, 2003Date of Patent: October 26, 2010Assignee: Daicel Chemical Industries, Ltd.Inventors: Michio Tsuyumoto, Yo Yamato
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Publication number: 20090211671Abstract: A gas generating composition is obtained in which an amount of a combustion residue based on a unit amount of a gas generated is reduced. A gas generating composition comprising nitroguanidine, guanidine nitrate or a mixture thereof as a fuel and further an oxidizing agent. The oxidizing agent is a perchloric acid salt, a nitric acid salt or a mixture thereof, and when the oxidizing agent is ammonium perchlorate, a chlorine neutralizer is further incorporated.Type: ApplicationFiled: April 24, 2009Publication date: August 27, 2009Inventor: Yo YAMATO
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Publication number: 20090101250Abstract: Provided is a basic metal nitrate suitable as an oxidizing agent for a gas generating agent, which is a basic metal nitrate having a good thermal stability and meeting at least one requirement of the following (a) to (d): (a) a particle diameter of 0.5 to 40 ?m; (b) a degree of crystallinity having 0.4 deg or less of a half band width of the peak in the X-ray analysis; (c) an initiation temperature of weight loss being 220° C. or higher according to TG-DTA analysis; and (d) an impurity content of 1,000 ppm or less based on Na atom. Further provided is a gas generating composition which has a low toxicity, a high burning rate and a low combustion temperature and which is used in a gas generator for an air bag. The gas generating composition comprises (a) tetrazole derivatives, guanidine derivatives or a mixture thereof, (b) a basic metal nitrate and (c) a binder and/or a slag-forming agent.Type: ApplicationFiled: September 5, 2008Publication date: April 23, 2009Inventors: Xingxi Zhou, Kazuyuki Matsuoka, Jianzhou Wu, Yo Yamato, Takeshi Takahori, Kaoru Yamazaki
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Publication number: 20090008142Abstract: [Object] To provide a multilayer assembly that excels in pore properties, is flexible, and is satisfactorily handled and processed; and a method of producing the multilayer assembly. [Solving Means] A multilayer assembly includes a base and, arranged on at least one side thereof, a porous layer and has a large number of continuous micropores with an average pore diameter of 0.01 to 10 ?m. The multilayer assembly suffers from no interfacial delamination between the base and the porous layer when examined in a tape peeling test according to the following procedure: Tape Peeling Test A 24-mm wide masking tape [Film Masking Tape No. 603 (#25)] supplied by Teraoka Seisakusho Co., Ltd. is applied to a surface of the porous layer of the multilayer assembly and press-bonded thereto with a roller having a diameter of 30 mm and a load of 200 gf to give a sample; and the sample is subjected to a T-peel test with a tensile tester at a peel rate of 50 mm/min.Type: ApplicationFiled: February 16, 2007Publication date: January 8, 2009Inventors: Kiyoshi Shimizu, Yo Yamato
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Publication number: 20070119530Abstract: A basic metal nitrate suitable as an oxidizing agent for a gas generating agent, which is a basic metal nitrate having a good thermal stability and meeting at least one requirement of the following (a) to (d): (a) a particle diameter of 0.5 to 40 ?m; (b) a degree of crystallinity having 0.4 deg or less of a half band width of the peak in the X-ray analysis; (c) an initiation temperature of weight loss being 220° C. or higher according to TG-DTA analysis; and (d) an impurity content of 1,000 ppm or less based on Na atom. Also, a gas generating composition which has a low toxicity, a high burning rate, and a low combustion temperature and which is used in a gas generator for an air bag. The gas generating composition comprises (a) tetrazole derivatives, guanidine derivatives or a mixture thereof, (b) a basic metal nitrate, and (c) a binder and/or a slag-forming agent.Type: ApplicationFiled: September 1, 2005Publication date: May 31, 2007Inventors: Xingxi Zhou, Kazuyuki Matsuoka, Jianzhou Wu, Yo Yamato, Takeshi Takahori, Kaoru Yamazaki