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).

  • Publication number: 20230099980
    Abstract: 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: Application
    Filed: February 16, 2021
    Publication date: March 30, 2023
    Inventors: Takashi MAKINO, Mitsuhiro KANAKUBO, Masao IWAYA, Yo YAMATO
  • Publication number: 20220347367
    Abstract: 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: Application
    Filed: July 15, 2022
    Publication date: November 3, 2022
    Applicant: DAICEL CORPORATION
    Inventors: Takashi ARAI, Yo YAMATO, Koji NAKANE, Naoki SHIMADA, Hanako ASAI
  • Patent number: 11419970
    Abstract: 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: Grant
    Filed: December 22, 2017
    Date of Patent: August 23, 2022
    Assignee: DAICEL CORPORATION
    Inventors: Takashi Arai, Yo Yamato, Koji Nakane, Naoki Shimada, Hanako Asai
  • Patent number: 11344653
    Abstract: 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: Grant
    Filed: December 22, 2017
    Date of Patent: May 31, 2022
    Assignee: DAICEL CORPORATION
    Inventors: Takashi Arai, Yo Yamato, Koji Nakane, Naoki Shimada, Hanako Asai
  • Publication number: 20200306414
    Abstract: 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: Application
    Filed: December 22, 2017
    Publication date: October 1, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Takashi ARAI, Yo YAMATO, Koji NAKANE, Naoki SHIMADA, Hanako ASAI
  • Publication number: 20200129688
    Abstract: 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: Application
    Filed: December 22, 2017
    Publication date: April 30, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Takashi ARAI, Yo YAMATO, Koji NAKANE, Naoki SHIMADA, Hanako ASAI
  • Publication number: 20190036094
    Abstract: 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: Application
    Filed: November 30, 2016
    Publication date: January 31, 2019
    Applicant: DAICEL CORPORATION
    Inventors: Yo YAMATO, Masao IWAYA
  • Publication number: 20150306539
    Abstract: 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: Application
    Filed: March 17, 2015
    Publication date: October 29, 2015
    Applicant: DAICEL CORPORATION
    Inventor: Yo YAMATO
  • Patent number: 8613821
    Abstract: 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: Grant
    Filed: September 8, 2010
    Date of Patent: December 24, 2013
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Xingxi Zhou, Kazuyuki Matsuoka, Jianzhou Wu, Yo Yamato, Takeshi Takahori, Kaoru Yamazaki
  • Publication number: 20130020117
    Abstract: 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: Application
    Filed: December 1, 2010
    Publication date: January 24, 2013
    Applicant: DAICEL CORPORATION
    Inventor: Yo Yamato
  • Patent number: 8294040
    Abstract: [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: Grant
    Filed: February 16, 2007
    Date of Patent: October 23, 2012
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Kiyoshi Shimizu, Yo Yamato
  • Publication number: 20120027342
    Abstract: 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: Application
    Filed: March 30, 2010
    Publication date: February 2, 2012
    Inventors: Tsukasa Yoshida, Yoshinori Funaki, Yo Yamato
  • Publication number: 20110081527
    Abstract: 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: Application
    Filed: June 9, 2009
    Publication date: April 7, 2011
    Inventor: Yo Yamato
  • Publication number: 20100326574
    Abstract: 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: Application
    Filed: September 8, 2010
    Publication date: December 30, 2010
    Inventors: Xingxi Zhou, Kazuyuki Matsuoka, Jianzhou Wu, Yo Yamato, Takeshi Takahori, Kaoru Yamazaki
  • Patent number: 7829186
    Abstract: 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: Grant
    Filed: September 15, 2004
    Date of Patent: November 9, 2010
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Yo Yamato, Michio Tsuyumoto
  • Patent number: 7820281
    Abstract: 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: Grant
    Filed: August 19, 2003
    Date of Patent: October 26, 2010
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Michio Tsuyumoto, Yo Yamato
  • Publication number: 20090211671
    Abstract: 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: Application
    Filed: April 24, 2009
    Publication date: August 27, 2009
    Inventor: Yo YAMATO
  • Publication number: 20090101250
    Abstract: 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: Application
    Filed: September 5, 2008
    Publication date: April 23, 2009
    Inventors: Xingxi Zhou, Kazuyuki Matsuoka, Jianzhou Wu, Yo Yamato, Takeshi Takahori, Kaoru Yamazaki
  • Publication number: 20090008142
    Abstract: [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: Application
    Filed: February 16, 2007
    Publication date: January 8, 2009
    Inventors: Kiyoshi Shimizu, Yo Yamato
  • Publication number: 20070119530
    Abstract: 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: Application
    Filed: September 1, 2005
    Publication date: May 31, 2007
    Inventors: Xingxi Zhou, Kazuyuki Matsuoka, Jianzhou Wu, Yo Yamato, Takeshi Takahori, Kaoru Yamazaki