Patents by Inventor Atsushi Hozumi

Atsushi Hozumi 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).

  • Patent number: 11916230
    Abstract: A negative electrode active material includes a hydrogen storage alloy. The hydrogen storage alloy has an A2B7 crystal structure. The hydrogen storage alloy includes nickel. The saturation magnetization per unit mass is 1.9 emu·g?1 or more.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: February 27, 2024
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masato Hozumi, Motoyoshi Okumura, Takeo Okanishi, Atsushi Minagata
  • Patent number: 11718807
    Abstract: A hydrophilic slippery treatment agent which allows for the formation of a coating having hydrophilicity concurrently with water droplet removability via drying at lower temperatures, a surface treatment method using the hydrophilic slippery treatment agent, a substrate having a hydrophilic slippery coating formed thereon by the surface treatment method, and a fin material for a heat exchanger having a hydrophilic slippery coating formed thereon by the surface treatment method are provided. The treatment agent contains an organosilicon compound with a specific structure including both a hydrophilic-chain-containing group and a hydrolyzable group, and a metal alkoxide.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: August 8, 2023
    Assignees: NIPPON PAINT SURF CHEMICALS CO., LTD, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Souhei Kaneko, Masaki Matsuzaki, Atsushi Hozumi, Chihiro Urata
  • Publication number: 20220119723
    Abstract: A hydrophilic slippery treatment agent which allows for the formation of a coating having hydrophilicity concurrently with water droplet removability via drying at lower temperatures, a surface treatment method using the hydrophilic slippery treatment agent, a substrate having a hydrophilic slippery coating formed thereon by the surface treatment method, and a fin material for a heat exchanger having a hydrophilic slippery coating formed thereon by the surface treatment method are provided. The treatment agent contains an organosilicon compound with a specific structure including both a hydrophilic-chain-containing group and a hydrolyzable group, and a metal alkoxide.
    Type: Application
    Filed: January 23, 2020
    Publication date: April 21, 2022
    Inventors: Souhei KANEKO, Masaki MATSUZAKI, Atsushi HOZUMI, Chihiro URATA
  • Patent number: 11203674
    Abstract: The object of the present invention is to attain both water/oil repellency and hardness. The transparent film of the present invention comprises: a polysiloxane backbone; and a first hydrocarbon chain-containing group bonded to a part of silicon atoms forcing the polysiloxane backbone, wherein the thickness of the transparent film is not less than 6 nm and not more than 50 nm.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: December 21, 2021
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasuharu Shimazaki, Yoshihiro Harada, Ryu Takeko, Atsushi Hozumi, Chihiro Urata
  • Publication number: 20200308706
    Abstract: The present invention provides a surface treatment technology that gives excellent surface functionality to surfaces of a variety of large-area substrate materials. According to the present invention, when precursor solution containing an organosilane and a metal alkoxide is coated on a substrate material to form a polymerization initiator layer by a sol-gel process, a polymerization initiator group-containing organosilane having a formula: X—R1-(Ph)k-(R2)m—Si—R3nR43-n (X stands for a halogen atom, R1 stands for an alkylene group having 1 to 3 carbon atoms, Ph stands for a phenylene group, R2 stands for a C1 to C10 alkylene group optionally via an oxygen atom, R3 stands for an alkoxy or chloro group having 1 to 3 carbon atoms, R4 stands for an alkyl group having 1 to 6 carbon atoms, k is 0 or 1, m is 0 or 1, and n is 1, 2 or 3) is used as the organosilane.
    Type: Application
    Filed: December 27, 2018
    Publication date: October 1, 2020
    Inventors: Tomoya SATO, Chihiro URATA, Atsushi HOZUMI
  • Patent number: 10370546
    Abstract: The object of the present invention is to provide a water/oil-repellent coating composition for forming a film capable of attaining both water/oil repellency and abrasion resistance. The water/oil-repellent coating composition comprises: an organosilicon compound (A) and a metal compound (B), wherein at least one first hydrocarbon chain-containing group and at least one hydrolyzable group are bonded to a silicon atom in the organosilicon compound (A), where in at least one hydrolyzable group is bonded to a metal atom in the metal compound (B), wherein a second hydrocarbon chain-containing group having a length shorter than the length of the first hydrocarbon chain-containing group may be bonded to the metal atom in the metal compound (B), and wherein a molar ratio of the metal compound B) to the organosilicon compound (A) as metal compound (B)/organosilicon compound (A) is not less than 18 and not more than 48.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: August 6, 2019
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasuharu Shimazaki, Sayaka Sakurai, Tomonori Miyamoto, Atsushi Hozumi, Chihiro Urata
  • Patent number: 10138380
    Abstract: In an aspect of the present invention, there is provided a water/oil repellent coating film, the water/oil repellent coating film being formed on a surface of a solid object, wherein the water/oil repellent coating film is terminated with a group expressed by chemical formula (A) and a three-dimensional crosslinking structure of siloxane bond is formed.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: November 27, 2018
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Atsushi Hozumi, Chihiro Urata
  • Patent number: 10023701
    Abstract: In an embodiment of the present invention, a wet gel includes a crosslinked silicone resin in which a silicone resin composition is solidified; a first liquid capable of dissolving the silicone resin composition; and one of a solid capable of being dissolved in the first liquid, and a second liquid such that a degree of swelling, when the crosslinked silicone resin is immersed in the second liquid, is less than a degree of swelling when the crosslinked silicone resin is immersed in n-dodecane, wherein the second liquid is capable of being mixed with the first liquid.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: July 17, 2018
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Chihiro Urata, Atsushi Hozumi
  • Publication number: 20170313902
    Abstract: The object of the present invention is to provide a water/oil-repellent coating composition for forming a film capable of attaining both water/oil repellency and abrasion resistance. The water/oil-repellent coating composition comprises: an organosilicon compound (A) and a metal compound (B), wherein at least one first hydrocarbon chain-containing group and at least one hydrolyzable group are bonded to a silicon atom in the organosilicon compound (A), where in at least one hydrolyzable group is bonded to a metal atom in the metal compound (B), wherein a second hydrocarbon chain-containing group having a length shorter than the length of the first hydrocarbon chain-containing group may be bonded to the metal atom in the metal compound (B), and wherein a molar ratio of the metal compound B) to the organosilicon compound (A) as metal compound (B)/organosilicon compound (A) is not less than 18 and not more than 48.
    Type: Application
    Filed: October 27, 2015
    Publication date: November 2, 2017
    Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Yasuharu SHIMAZAKI, Sayaka SAKURAI, Tomonori MIYAMOTO, Atsushi HOZUMI, Chihiro URATA
  • Publication number: 20170313833
    Abstract: The object of the present invention is to attain both water/oil repellency and hardness. The transparent film of the present invention comprises: a polysiloxane backbone; and a first hydrocarbon chain-containing group bonded to a part of silicon atoms forcing the polysiloxane backbone, wherein the thickness of the transparent film is not less than 6 nm and not more than 50 nm.
    Type: Application
    Filed: October 27, 2015
    Publication date: November 2, 2017
    Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Yasuharu SHIMAZAKI, Yoshihiro HARADA, Ryu TAKEKO, Atsushi HOZUMI, Chihiro URATA
  • Publication number: 20170130007
    Abstract: In an embodiment of the present invention, a wet gel includes a crosslinked silicone resin in which a silicone resin composition is solidified; a first liquid capable of dissolving the silicone resin composition; and one of a solid capable of being dissolved in the first liquid, and a second liquid such that a degree of swelling, when the crosslinked silicone resin is immersed in the second liquid, is less than a degree of swelling when the crosslinked silicone resin is immersed in n-dodecane, wherein the second liquid is capable of being mixed with the first liquid.
    Type: Application
    Filed: June 19, 2015
    Publication date: May 11, 2017
    Applicant: National Institute of Advanced Industrial Science and Technology
    Inventors: Chihiro URATA, Atsushi HOZUMI
  • Publication number: 20170107381
    Abstract: Provided is an antifouling sheet having an interlayer (X) containing a (poly)silazane compound and having an antifouling layer (Y) layered on the surface of the interlayer (X), wherein the layer (Y) is formed of an antifouling layer-forming composition containing a specific tetrafunctional silane compound (A) and a specific trifunctional silane compound (B), the content of the component (B) in the antifouling layer-forming composition is 8 to 90 mol % relative to 100 mol % of the component (A). The antifouling sheet is provided with an antifouling layer having good surface state and curability, has a large slip acceleration for water droplets, thereby having excellent water repellency that makes water droplets slip off instantly, and has excellent interlayer adhesiveness.
    Type: Application
    Filed: March 26, 2015
    Publication date: April 20, 2017
    Applicants: LINTEC CORPORATION, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Maki HIRONAGA, Yoshitomo ONO, Takashi SUGINO, Sou MIYATA, Kazumi ITO, Atsushi HOZUMI, Chihiro URATA
  • Publication number: 20170015842
    Abstract: In an aspect of the present invention, there is provided a water/oil repellent coating film, the water/oil repellent coating film being formed on a surface of a solid object, wherein the water/oil repellent coating film is terminated with a group expressed by chemical formula (A) and a three-dimensional crosslinking structure of siloxane bond is formed.
    Type: Application
    Filed: February 19, 2015
    Publication date: January 19, 2017
    Applicant: National Institute of Advanced Industrial Science and Technology
    Inventors: Atsushi HOZUMI, Chihiro URATA
  • Publication number: 20160032146
    Abstract: An organosililane and a metal alkoxide mixed together at a given molar ratio are subjected to co-hydrolysis and polycondensation in a solution containing an organic solvent, water and a catalyst to obtain a precursor solution with a controlled inter-organosilane distance. The precursor solution is coated onto a solid surface, and then allowed to stand at room temperature under atmospheric pressure for a given time to obtain an organic/inorganic transparent hybrid film. A difference (hysteresis) between the advancing and receding contact angles of the hybrid film relative to a liquid having a surface tension of 18 to 73 dynes/cm has a smaller value than that of a surface treated by the organosilane alone. The hybrid film is improved in terms of adhesion, transparency, and the mobility of functional groups derived from the organosilane on the film surface. A solid surface can be covered by the organic/inorganic transparent hybrid film.
    Type: Application
    Filed: March 8, 2013
    Publication date: February 4, 2016
    Inventors: Atsushi HOZUMI, Chihiro URATA, John Benjamin MASHEDER
  • Patent number: 6841143
    Abstract: This invention provides mesostructured oxide ceramics and a synthesizing method thereof, the synthesizing method employs a water-based solvent containing a metallic salt or metal complex as the ceramics precursor, template formed from an organic compound or the association thereof, and a precipitant, wherein mesostructured oxide ceramics are obtained from self-assembled oxide ceramics and organic substance by directly extracting oxide ceramics at a low temperature of 200° C. or less by utilizing a homogenous precipitation reaction from said ceramics precursor under the coexistence of a nanometer-sized template in the solvent, and separating and collecting the obtained precipitation, and mesostructured oxide ceramics is prepared by employing the synthesizing method described above.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: January 11, 2005
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Masahiko Inagaki, Atsushi Hozumi, Kei Teraoka, Kaori Nishizawa, Fukue Nagata, Yoshiyuki Yokogawa, Tetsuya Kameyama
  • Patent number: 6733715
    Abstract: A method of manufacturing hollow ceramics fibers with the pores of the micron-scale hollow structure unidirectionally oriented, the method of manufacturing is characterized in the steps of dispersing organic fibers in a dielectric liquid and applying high voltage to the dielectric liquid containing the dispersed organic fibers to electrostatically align them to produce a fiber accumulation in which the organic fibers are unidirectionally oriented, using the fiber accumulation as a mold and dipping the fiber accumulation in a ceramics base solution, and then removing the mold by treatment with heat or organic solvents.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: May 11, 2004
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Atsushi Hozumi, Yoshiyuki Yokogawa, Tetsuya Kameyama
  • Patent number: 6645571
    Abstract: A process for producing the ceramic porous body comprising the steps of (1) forming micelles in liquid by mixing {circle around (1)} surfactant molecules, {circle around (2)} surfactant molecules and given organic molecules, or {circle around (3)} different kinds of surfactant molecules, (2) forming a precursor of a ceramic porous body having an organic-inorganic structure is formed through mixing a ceramic material or a precursor of the ceramic material into the liquid containing the micelles, the precursor of the ceramic porous body comprising a template having the micelles arranged in a hexagonal, cubic or lamella form and the ceramic material or the ceramic material precursor adsorbed around the micelles, (3) removing the surfactant molecules or the surfactant molecules and the given organic molecules in the precursor of the ceramic porous body by photo-oxidation through irradiating vacuum ultraviolet light upon the precursor to leave an inorganic skeleton alone, and (4) thereby forming the ceramic porous
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: November 11, 2003
    Assignee: Nagoya University
    Inventors: Osamu Takai, Hiroyuki Sugimura, Atsushi Hozumi
  • Patent number: 6465388
    Abstract: A photocatalytic film is formed by: a step for forming an uncured underlayer from an organic composition on the surface of a resinous base and polymerizing the organic composition to convert the uncured underlayer into an underlayer having a hardness higher than that of the resinous base; a step for forming an uncured intermediate layer from a polymerizable and curable silicone composition on the uncured underlayer or on the underlayer to yield an uncured intermediate layer, and polymerizing the polymerizable and curable silicone composition to convert the uncured intermediate layer to an intermediate layer, the polymerizable and curable silicone composition being prepared mainly from a hydrolyzable tetrafunctional silane derivative; and a step for forming a photocatalytic layer on the intermediate layer. This process can form an intermediate layer having a very high hardness without cracking and can easily yield a photocatalytic film having a satisfactory abrasion resistance.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: October 15, 2002
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Atsushi Hozumi, Hitotoshi Murase
  • Publication number: 20020070482
    Abstract: The present invention relates to a method of manufacturing hollow ceramics fibers with the pores of the micron-scale hollow structure unidirectionally oriented, the method of manufacturing is characterized in the steps of dispersing organic fibers in a dielectric liquid and applying high voltage to the dielectric liquid containing the dispersed organic fibers to electrostatically align them to produce a fiber accumulation in which the organic fibers are unidirectionally oriented, using said fiber accumulation as a mold and dipping said fiber accumulation in a ceramics base solution, and then removing said mold by treatment with heat or organic solvents.
    Type: Application
    Filed: September 19, 2001
    Publication date: June 13, 2002
    Applicant: National Inst. of Advanced Ind. Science and Tech.
    Inventors: Atsushi Hozumi, Yoshiyuki Yokogawa, Tetsuya Kameyama
  • Patent number: 6402517
    Abstract: The invention provides an artificial tooth root having acid resistance and anti-adherence of sordes and various germs, consisting of a substrate and a coating of calcium phosphate based ceramic having bioaffinity formed on the surface of this substrate, the substrate is composed of a polymer, ceramic, metal, or other material, the surface of the ceramic coating on the substrate surface is endowed with a protrusion-and-recession configuration, and is, chemically modified, and to a method for producing the artificial tooth root, by forming a coating of calcium phosphate based ceramic having bioaffinity over a substrate while imparting protrusions and recessions thereto, masking an area of the ceramic coating surface of which bioaffinity is required, and fixing a silane coupling agent exclusively over a predetermined area of the ceramic coating surface.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: June 11, 2002
    Assignee: Agency of Industrial Science and Technology
    Inventors: Atsushi Hozumi, Masahiko Inagaki, Kaori Nishizawa, Fukue Nagata, Yoshiyuki Yokogawa, Tetsuya Kameyama