Patents by Inventor Kazuhiro Takahashi

Kazuhiro 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).

  • Patent number: 10023510
    Abstract: This invention provides a method for producing 2,3,3,3-tetrafluoropropene or 2-chloro-1,1,1,2-tetrafluoropropane, which is a precursor of 2,3,3,3-tetrafluoropropene, in two or three reaction steps, using at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, and 1,1,2,3-tetrachloropropene as a starting material, the reaction products of at least two of the steps being supplied to the same distillation apparatus to subject the products to a separation operation simultaneously. With this method, 2,3,3,3-tetrafluoropropene or 2-chloro-1,1,1,2-tetrafluoropropane, which is a precursor of 2,3,3,3-tetrafluoropropene, can be efficiently produced with reduced energy and equipment costs in an economically advantageous manner.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: July 17, 2018
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Takehiro Chaki, Kazuhiro Takahashi, Tatsuya Takakuwa
  • Publication number: 20180194279
    Abstract: Provided is an electronic apparatus that perform an appropriate process according to a gesture of a subject person, the electronic apparatus including: a first input unit that inputs a detection result of a biosensor detecting a change in biological information of a subject person; a second input unit that inputs a recognition result of a recognition device recognizing an action of the subject person; and a processing unit that performs a process according to the action of the subject person based on input results of the first and second input units.
    Type: Application
    Filed: March 5, 2018
    Publication date: July 12, 2018
    Applicant: NIKON CORPORATION
    Inventors: Kazuhiro TAKAHASHI, Mami MURATAMI, Naoto YAMADA, Shinjiro MURAKI, Yuya ADACHI, Masakazu SEKIGUCHI
  • Patent number: 10011753
    Abstract: The present invention provides a process for producing 2,3,3,3-tetrafluoropropene, comprising distilling a mixture of water and 2,3,3,3-tetrafluoropropene to separate the mixture into a first stream and a second stream, the first stream containing 2,3,3,3-tetrafluoropropene with a water content higher than the original mixture, and the second stream containing 2,3,3,3-tetrafluoropropene with a water content lower than the original mixture; and obtaining 2,3,3,3-tetrafluoropropene with a reduced water content from the second stream. The process of the invention can efficiently remove water from 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: July 3, 2018
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventor: Kazuhiro Takahashi
  • Publication number: 20180134125
    Abstract: A plate-like body with a resin frame attached thereto for a vehicle includes two main surfaces and an end part connecting the two main surfaces, and a resin frame integrally molded to a peripheral edge area of the plate-like body; the resin frame including a main part having a plurality of inner surfaces facing the two main surfaces and the end part, and a plurality of projections obliquely projecting from the main part in a direction opposite to the plate-like body; and the resin frame having no adhesive between the peripheral edge area and an inner surface close to the projections.
    Type: Application
    Filed: October 31, 2017
    Publication date: May 17, 2018
    Applicant: Asahi Glass Company, Limited
    Inventors: Kazuhiro TAKAHASHI, Kunihiko KAWASHIMA
  • Patent number: 9962760
    Abstract: A titanium slab is appropriate for hot rolling, is produced by electron beam melting furnace, has superior linearity so that it can be fed into a hot rolling machine without performing breaking down process or other subsequent correcting process after production, and has good structure having no cracks at the corner parts. A process for production thereof is also provided. The titanium slab is directly produced by a mold of an electron beam melting furnace, and has the deformation of not more than 5 mm for the thickness direction versus the longitudinal direction and deformation of not more than 2.5 mm for the width direction versus the longitudinal direction, both per a length of 1000 mm of the slab. The process for production of this titanium slab for hot rolling has a step of using an electron beam melting furnace in which its rectangular mold has mold walls of a long side and mold walls of a short side, and a step of pouring molten metal from one of the mold walls of a short side.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: May 8, 2018
    Assignees: TOHO TITANIUM CO., LTD., NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hisamune Tanaka, Norio Yamamoto, Takeshi Shiraki, Takashi Oda, Yoshimasa Miyazaki, Yoshihiro Fujii, Kazuhiro Takahashi
  • Patent number: 9947942
    Abstract: A titanium or titanium alloy material for a fuel cell separator has a surface shape in which a plurality of projections are distributed, and a titanium oxide film on a surface of the projections. Fine projections are assumed to increase the contact conductivity remarkably. By increasing contact conductivity with carbon and durability of a titanium or titanium alloy material for a fuel cell separator, the lifetime of a fuel cell may be increased. The material has high usability in the cell manufacturing industry.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: April 17, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kazuhiro Takahashi, Taku Kagawa, Hiroshi Kihira, Kiyonori Tokuno, Takumi Nishimoto, Koki Tanaka
  • Patent number: 9938209
    Abstract: This invention provides a method for producing 2,3,3,3-tetrafluoropropene or 2-chloro-1,1,1,2-tetrafluoropropane, which is a precursor of 2,3,3,3-tetrafluoropropene, in two or three reaction steps, using at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, and 1,1,2,3-tetrachloropropene as a starting material, the reaction products of at least two of the steps being supplied to the same distillation apparatus to subject the products to a separation operation simultaneously. With this method, 2,3,3,3-tetrafluoropropene or 2-chloro-1,1,1,2-tetrafluoropropane, which is a precursor of 2,3,3,3-tetrafluoropropene, can be efficiently produced with reduced energy and equipment costs in an economically advantageous manner.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: April 10, 2018
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Takehiro Chaki, Kazuhiro Takahashi, Tatsuya Takakuwa
  • Patent number: 9878520
    Abstract: An adhesive sheet having a substrate and an adhesive layer laminated on one or both surfaces of the substrate, and which has an anti-static performance, is described. At least one of the adhesive layers contains an adhesive and a compound (1) represented by the following formula (1), and contains the compound (1) in an amount of from 0.1 to 100 parts by mass on the basis of 100 parts by mass of the adhesive. In the formula, R1 is a (meth)acryloyl group; R2 is a C1-4 alkylene group; and n is an integer of from 1 to 20, such as 4 to 16.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: January 30, 2018
    Inventors: Hitoshi Ohashi, Yoji Wakayama, Kazuhiro Takahashi
  • Publication number: 20170362686
    Abstract: The present invention provides a ?-type titanium alloy that includes, by mass %, when Al: 2 to 5%, 1) Fe: 2 to 4%, Cr: 6.2 to 11%, and V: 4 to 10%, 2) Fe: 2 to 4%, Cr: 5 to 11%, and Mo: 4 to 10%, or 3) Fe: 2 to 4%, Cr: 5.5 to 11%, and Mo+V (total of Mo and V): 4 to 10% in range, and a balance of substantially Ti. These include Zr added in amounts of 1 to 4 mass %. Furthermore, by making the oxygen equivalent Q 0.15 to 0.30 or leaving the alloy in the work hardened state or by applying both, the tensile strength before aging heat treatment can be further increased.
    Type: Application
    Filed: September 5, 2017
    Publication date: December 21, 2017
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kazuhiro TAKAHASHI, Hideki FUJII, Kenichi MORI
  • Patent number: 9841844
    Abstract: An image display device includes an image display component, a projection component that forms an optical image corresponding to an image displayed by the image display component, a distance measurement component having a detector that detects an indicator for performing an touch operation relative to the optical image to acquire distance information from the detector to the indicator, and a controller that determines whether or not the indicator has performed the touch operation relative to the optical image based on the distance information and relative movement information between the distance measurement component and at least one of the image display component and the projection component.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: December 12, 2017
    Assignee: FUNAI ELECTRIC CO., LTD.
    Inventors: Kazuhiro Takahashi, Atsuhiko Chikaoka, Ken Nishioka
  • Publication number: 20170349973
    Abstract: Provided is a titanium casting product made of titanium alloy, the titanium casting product being produced by electron-beam remelting or plasma arc remelting, comprising: a melted and resolidified layer in a range of 1 mm or more in depth at a surface serving as a surface to be rolled, the melted and resolidified layer being obtained by adding one or more kinds of ? stabilizer elements to the surface and melting and resolidifying the surface. An average value of ? stabilizer element concentration in a range of within 1 mm in depth is higher than ? stabilizer element concentration in a base material by, in mass %, equal to or more than 0.08 mass % and equal to or less than 1.50 mass %. As the material containing the ? stabilizer element, powder, a chip, wire, or foil is used. As means for melting a surface layer, electron-beam heating and plasma arc heating are used.
    Type: Application
    Filed: September 30, 2014
    Publication date: December 7, 2017
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yoshitsugu TATSUZAWA, Tomonori KUNIEDA, Kenichi MORI, Hideki FUJII, Kazuhiro TAKAHASHI
  • Patent number: 9822431
    Abstract: The present invention provides a ?-type titanium alloy that includes, by mass %, when Al: 2 to 5%, 1) Fe: 2 to 4%, Cr: 6.2 to 11%, and V: 4 to 10%, 2) Fe: 2 to 4%, Cr: 5 to 11%, and Mo: 4 to 10%, or 3) Fe: 2 to 4%, Cr: 5.5 to 11%, and Mo+V (total of Mo and V): 4 to 10% in range, and a balance of substantially Ti. These include Zr added in amounts of 1 to 4 mass %. Furthermore, by making the oxygen equivalent Q 0.15 to 0.30 or leaving the alloy in the work hardened state or by applying both, the tensile strength before aging heat treatment can be further increased.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: November 21, 2017
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kazuhiro Takahashi, Hideki Fujii, Kenichi Mori
  • Patent number: 9816158
    Abstract: The present invention provides a ?-type titanium alloy keeping the content of the relatively expensive ?-stabilizing elements such as V or Mo down to a total of 10 mass % or less and reducing the effects of composition segregation of Fe and Cr and thereby able to keep the Young's modulus and density relatively low. The ?-type titanium alloy of the present invention comprises, by mass %, when Al: 2 to 5%, 1) Fe: 2 to 4%, Cr: 6.2 to 11%, and V: 4 to 10%, 2) Fe: 2 to 4%, Cr: 5 to 11%, and Mo: 4 to 10%, or 3) Fe: 2 to 4%, Cr: 5.5 to 11%, and Mo+V (total of Mo and V): 4 to 10% in range, and a balance of substantially Ti. These include Zr added in amounts of 1 to 4 mass %. Furthermore, by making the oxygen equivalent Q 0.15 to 0.30 or leaving the alloy in the work hardened state or by applying both, the tensile strength before aging heat treatment can be further increased.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: November 14, 2017
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kazuhiro Takahashi, Hideki Fujii, Kenichi Mori
  • Publication number: 20170320798
    Abstract: The present invention provides a method for separating HFC-245cb and (E)-HFO-1234ze having close boiling points, i.e., boiling points with only 1° C. difference, by extractive distillation from a composition containing the HFC-245cb and the (E)-HFO-1234ze. More specifically, the present invention is a method for separating HFC-245cb and (E)-HFO-1234ze from a composition containing the HFC-245cb and the (E)-HFO-1234ze, the method comprising subjecting the composition to extractive distillation using at least one extractant selected from the group consisting of halogenated hydrocarbons, halogenated unsaturated hydrocarbons, nitriles, ketones, carbonates, alcohols, hydrocarbons, esters and ethers.
    Type: Application
    Filed: November 12, 2015
    Publication date: November 9, 2017
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Mana SHIMOKAWA, Tatsuya TAKAKUWA, Kazuhiro TAKAHASHI
  • Patent number: 9797029
    Abstract: The present invention provides a heat resistant titanium alloy sheet excellent in cold workability having high temperature strength characteristics better than JIS Class 2 pure titanium and having a cold workability and high temperature oxidation resistance equal to or better than that of JIS Class 2 pure titanium and a method of production of the same, that is, a heat resistant titanium alloy sheet excellent in cold workability characterized by comprising, by mass %, 0.3 to 1.8% of Cu, 0.18% or less of oxygen, 0.30% or less of Fe, and, as needed, at least one of Sn, Zr, Mo, Nb, and Cr in a total of 0.3 to 1.5%, and the balance of Ti and less than 0.3% of impurity elements and by a ?-phase and Ti2Cu-phase being included in a volume percentage of 0 to 2% and, further, a method of production of that titanium alloy sheet characterized by performing the final annealing at 630 to 850° C. in temperature range or performing the hot-rolled sheet or coil annealing or intermediate annealing at 630 to 850° C.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: October 24, 2017
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hideki Fujii, Hiroaki Otsuka, Kazuhiro Takahashi
  • Publication number: 20170282231
    Abstract: Provided is a titanium cast product made of commercially pure titanium, the titanium cast product being produced by electron-beam remelting or plasma arc melting, comprising: a melted and resolidified layer in a range of 1 mm or more in depth at a surface serving as a surface to be rolled, the melted and resolidified layer being obtained by adding one or more kinds of ? stabilizer elements to the surface and melting and resolidifying the surface. An average value of ? stabilizer element(s) concentration in a range of within 1 mm in depth is higher than ? stabilizer element(s) concentration in a base material by, in mass %, equal to or more than 0.08 mass % and equal to or less than 1.50 mass %. As the material containing the ? stabilizer element, powder, a chip, wire, or foil is used. As means for melting a surface layer, electron-beam heating and plasma arc heating are used.
    Type: Application
    Filed: September 30, 2014
    Publication date: October 5, 2017
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yoshitsugu TATSUZAWA, Tomonori KUNIEDA, Kenichi MORI, Hideki FUJII, Kazuhiro TAKAHASHI
  • Publication number: 20170217859
    Abstract: This invention provides a method for stably producing 2,3,3,3-tetrafluoropropene for a long period of time wherein unreacted materials are reused after distillation without liquid-liquid separation to suppress catalyst deactivation.
    Type: Application
    Filed: June 16, 2015
    Publication date: August 3, 2017
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tatsuya TAKAKUWA, Kazuhiro TAKAHASHI, Daisuke KARUBE, Takehiro CHAKI, Masayuki KISHIMOTO, Yuzo KOMATSU
  • Patent number: 9719154
    Abstract: The present invention provides a titanium slab for hot rolling which can be fed into a general purpose hot-rolling mill for producing strip coil, without passage through a breakdown process such as blooming or a straightening process, and can further suppress surface defect occurrence of the hot-rolled strip coil, and a method of producing and a method of rolling the same, characterized in that in the cast titanium slab an angle ? formed by the crystal growth direction (solidification direction) from the surface layer toward the interior and a direction parallel to the slab casting direction (longitudinal direction) is 45 to 90°, and moreover, there is a surface layer structure of 10 mm or greater whose ? is 70 to 90°, and further characterized in that a crystal grain layer of 10 mm or greater is formed whose C-axis direction inclination of a titanium ? phase is, as viewed from the side of the slab to be hot rolled, in the range of 35 to 90° from the normal direction of the surface to be hot rolled.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: August 1, 2017
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, TOHO TITANIUM CO., LTD.
    Inventors: Kazuhiro Takahashi, Tomonori Kunieda, Kenichi Mori, Hiroaki Otsuka, Hideki Fujii, Yoshihiro Fujii, Yoshimasa Miyazaki, Takashi Oda, Hisamune Tanaka, Osamu Tada
  • Publication number: 20170190847
    Abstract: Provided are the following: water-absorbing resin particles with which an absorber can be manufactured, the absorber enabling ample anchoring to be obtained without compromising on water absorbency; and an absorber obtained by anchoring together the water-absorbing resin particles and a fibrous base material. The present invention is: core-shell water-absorbing resin particles constituted of a core layer (P) containing a water-absorbing resin (A) and a shell layer (Q), the shell layer (Q) containing a thermoplastic resin (B) having a melting point of 50 to 180° C., and the thermoplastic resin (B) being a polymer having a hydrophobic block comprising a polyolefin; an absorber obtained by anchoring the water-absorbing resin particles to a fibrous base material (F); and an absorbent article made using such absorber.
    Type: Application
    Filed: May 22, 2015
    Publication date: July 6, 2017
    Inventors: Yusuke Ueda, Kazuhiro Takahashi, Lanxian Chen
  • Patent number: 9610832
    Abstract: An object of the present invention is, even when the design of a weather strip body with a specific gravity of about 0.5 to 0.85 is improved using a nonwoven fabric, to provide a weather strip with excellent trackability and excellent adhesiveness between the weather strip body and the nonwoven fabric. The weather strip of the present invention comprises a weather strip body having a specific gravity of 0.5 to 0.85 and made of an ethylene-propylene copolymer rubber, an adhesive resin sheet comprising random polypropylene and a polypropylene-based thermoplastic elastomer, and a nonwoven fabric, said nonwoven fabric being attached to the weather strip body via the adhesive resin sheet.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: April 4, 2017
    Assignees: JAPAN VILENE COMPANY, LTD., TOYODA GOSEI CO., LTD.
    Inventors: Tatsuhiko Tsumura, Hirofumi Otsuka, Kazuhiro Takahashi