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).

  • Publication number: 20220023693
    Abstract: The present disclosure provides a novel azeotropic or azeotrope-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane (HFC-143), 1-chloro-2,2-difluoroethane (HCFC-142), or 1,2-dichloro-1-fluoroethane (HCFC-141); and a separation method using the composition. An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HFC-143. An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HCFC-142. An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HCFC-141. A separation method of a composition comprising hydrogen fluoride and at least one member selected from the group consisting of HFC-143, HCFC-142, and HCFC-141.
    Type: Application
    Filed: October 7, 2021
    Publication date: January 27, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Kazuhiro TAKAHASHI
  • Patent number: 11225446
    Abstract: According to a method for producing a perfluoroalkadiene compound represented by general formula (1): CF2?CF—(CF2)n-4—CF?CF2 (1), wherein n is an integer of 4 or more, the method comprising a reaction step of adding a nitrogen-containing compound to a solution of a compound represented by general formula (2): X1CF2—CFX2—(CF2)n-4—CF2—CF2X1 (2), wherein n is the same as above, X1 is the same or different and is a halogen atom other than fluorine, and X2 is a halogen atom, the perfluoroalkadiene compound can be obtained at a high yield.
    Type: Grant
    Filed: April 8, 2021
    Date of Patent: January 18, 2022
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yuusuke Etou, Atsushi Maruo, Katsuya Nakai, Kazuhiro Takahashi
  • Publication number: 20220009861
    Abstract: Provided are a novel azeotropic or azeotrope-like composition, and a separation method using the composition. An object is to provide a novel azeotropic or azeotrope-like composition, and a separation method using the composition. A solution to achieve the object is to provide an azeotropic or azeotrope-like composition containing trifluoroethylene and at least one compound selected from the group consisting of 1,1-difluoroethylene, fluoroethylene, and trifluoromethane.
    Type: Application
    Filed: September 27, 2021
    Publication date: January 13, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Kazuhiro TAKAHASHI
  • Publication number: 20220012043
    Abstract: A vehicle information communication system includes a center apparatus and a vehicle apparatus that includes a group of electronic control units (ECUs) and that sends vehicle configuration information including configuration information on the group of ECUs mounted in the vehicle to the center apparatus via wireless communications. The center apparatus performs a first determination of whether the vehicle configuration information received from the vehicle apparatus matches approved-configuration information registered in an approved-configuration database, and performs a second determination of whether software update data for at least one ECU of the group of ECUs mounted in the vehicle exists in an update database. When both the first and second determinations are true, the center apparatus sends the software update data for at least one ECU of the group of ECUs mounted in the vehicle to the vehicle apparatus via the wireless communications.
    Type: Application
    Filed: September 27, 2021
    Publication date: January 13, 2022
    Inventors: Nao SAKURAI, Shuhei TAKAHASHI, Kazuaki HAYAKAWA, Takuya HASEGAWA, Yuzo HARATA, Kazuhiro UEHARA, Takuya KAWASAKI
  • Publication number: 20220010184
    Abstract: An object of the present invention is to provide a novel azeoropic or azeotrope-like composition that is effective for the separation of HF from 1,1,2-trichloroethane (HCC-140), trans-1,2-dichloroethylene (HCO-1130(E)), or cis-1,2-dichloroethylene (HCO-1130(Z)). The object can be achieved by an azeotropic or azeotrope-like composition comprising HCC-140, HCO-1130(E), or HCO-1130(Z), and hydrogen fluoride.
    Type: Application
    Filed: September 27, 2021
    Publication date: January 13, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Kazuhiro TAKAHASHI
  • Publication number: 20220002894
    Abstract: A coated titanium material includes a titanium material and a coating film formed on a surface of the titanium material. A Ti-based oxide is included in an interface between the titanium material and the coating film. The Ti-based oxide is one or both rutile type TiO2 and Ti2O3. In a case where a cut surface of the coating film is formed by using a SAICAS method under conditions that a horizontal speed is 2 ?m/s and a vertical speed is 0.1 ?m/s, on the cut surface, an area percentage of the Ti-based oxide is 30.0% or more in a region having a distance of 15 ?m from a reference line specified on the basis of a boundary line, which is an intersection line between the cut surface and the interface, to a coating film side.
    Type: Application
    Filed: January 23, 2020
    Publication date: January 6, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kazuhiro TAKAHASHI, Koji AKIOKA, Eiji IKEDA, Hideya KAMINAKA
  • Publication number: 20210403778
    Abstract: Provided is a novel composition containing HFC-143. The composition contains HFC-143 and at least one additional compound selected from the group consisting of HFO-1132a, HFO-1123, HFC-143a, CTFE, HCFO-1131a, HFC-152a, HFC-152, HCFO-1131(E), HCFO-1131(Z), HFC-134a, HFC-161, HCFC-141, HCFC-123, HCFC-142, HCFC-142a, HCFO-1122, HCFO-1122a, HFO-1141, HCFC-21, HCFC-22, HFC-23, ethylene, and acetylene.
    Type: Application
    Filed: September 10, 2021
    Publication date: December 30, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Kazuhiro TAKAHASHI
  • Publication number: 20210403779
    Abstract: A novel composition comprising HFC-143 is provided. This invention relates to a composition comprising a refrigerant, wherein the refrigerant comprises 1,1,2-trifluoroethane (HFC-143), and at least one compound selected from the group consisting of 1-chloro-1,2,2-trifluoroethane (HCFC-133), 1-chloro-1,1,2-trifluoroethane (HCFC-133b), and 1-chloro-2-fluoroethylene (HCFO-1131).
    Type: Application
    Filed: September 10, 2021
    Publication date: December 30, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Kazuhiro TAKAHASHI
  • Publication number: 20210395173
    Abstract: The present disclosure provides a method for producing HFC-143 at low cost and more efficiently than when using conventional methods. Specifically, the present disclosure provides a method for producing 1,1,2-trifluoroethane (HFC-143), comprising performing one or more fluorination reactions by bringing at least one chlorine-containing compound selected from the group consisting of 2-chloro-1,1-difluoroethane (HCFC-142) and 1-chloro-1,2-difluoroethane (HCFC-142a) into contact with hydrogen fluoride to obtain a reaction gas containing HFC-143, hydrogen chloride, and hydrogen fluoride.
    Type: Application
    Filed: August 18, 2021
    Publication date: December 23, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takehiro CHAKI, Tsubasa NAKAUE, Megumi KUSHIDA, Kazuhiro TAKAHASHI
  • Patent number: 11205994
    Abstract: The present invention provides a solar photovoltaic installation capable of storing power while supplying power during daytime when solar radiation conditions are excellent. The solar photovoltaic installation of the invention includes at least a first solar module string 11 and a second solar module string 12 as solar module strings 10, the solar photovoltaic installation further includes at least a first storage battery array 21 and a second storage battery array 22 as storage battery arrays 20, and while power storage capacity detection means 60 detects that the second storage battery array 22 is less than a predetermined capacity and voltage detection means 50 detects voltage of more than predetermined voltage, the control means 40 connects the first solar module string 11 to a power conditioner 30, and connects the second solar module string 12 to the second storage battery array 22.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: December 21, 2021
    Assignee: CHURAECONET LLC
    Inventor: Kazuhiro Takahashi
  • Publication number: 20210363396
    Abstract: An object is to provide an azeotropic or azeotrope-like composition containing HFO-1132(E) and HFC-143a, and a method for separating HFO-1132(E) and HFC-143a from a composition containing HFO-1132(E) and HFC-143a. Provided as a solution to achieve the object is a composition containing a refrigerant, wherein the refrigerant is azeotropic or azeotrope-like and contains trans-1, 2-difluoroethylene (HFO-1132(E)) and 1,1,1-trifluoroethane (HFC-143a), and the proportion of HFO-1132(E) is 80 mass % or more and the proportion of HFC-143a is 20 mass % or less based on the total amount of HFO-1132(E) and HFC-143a in the refrigerant.
    Type: Application
    Filed: August 5, 2021
    Publication date: November 25, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuhiro TAKAHASHI, Tsubasa NAKAUE, Takehiro CHAKI, Takashi USUI, Megumi KUSHIDA
  • Publication number: 20210346820
    Abstract: This disclosure provides a novel azeotrope-like composition and a separation method using the composition. The disclosure provides an azeotrope-like composition comprising 1,2-difluoroethylene (HFO-1132) and hydrogen fluoride; an azeotrope-like composition comprising 1,1,2-trifluoroethylene (HFO-1123) and hydrogen fluoride; and a separation method of a composition comprising hydrogen fluoride and at least one member selected from the group consisting of trans-1,2-difluoroethylene (HFO-1132(E)), cis-1,2-difluoroethylene (HFO-1132(Z)), and 1,1,2-trifluoroethylene (HFO-1123).
    Type: Application
    Filed: July 26, 2021
    Publication date: November 11, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Kazuhiro TAKAHASHI
  • Publication number: 20210348252
    Abstract: An ?+? type titanium alloy wire contains, in mass %, Al: 4.50 to 6.75%, Si: 0 to 0.50%, C: 0.080% or less, N: 0.050% or less, H: 0.016% or less, O: 0.25% or less, Mo: 0 to 5.5%, V: 0 to 4.50%, Nb: 0 to 3.0%, Fe: 0 to 2.10%, Cr: 0 to less than 0.25%, Ni: 0 to less than 0.15%, Mn: 0 to less than 0.25%, and the balance being Ti and impurities, the contents of Al, Mo, V, Nb, Fe, Cr, Ni, and Mn satisfying an equation, in which an average aspect ratio of an ? crystal grain is 1.0 to 3.0, a maximum crystal grain diameter of the ? crystal grain is 30.0 ?m or less, an average crystal grain diameter of the ? crystal grain is 1.0 to 15.0 ?m.
    Type: Application
    Filed: October 7, 2019
    Publication date: November 11, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Ryotaro MIYOSHI, Tomonori KUNIEDA, Kazuhiro TAKAHASHI, Tatsuo YAMAZAKI, Akira KAWAKAMI
  • Publication number: 20210340082
    Abstract: Provided are a method for producing a fluoroethane, which is the desired product, with high selectivity; and a method for producing a fluoroolefin. The production method according to the present disclosure comprises obtaining a product comprising a fluoroethane represented by CX1X2FCX3X4X5 (wherein X1, X2, X3, X4, and X5 are the same or different and each represents a hydrogen atom, a fluorine atom, or a chlorine atom; and at least one of X1, X2, X3, X4, and X5 represents a hydrogen atom) from a fluoroethylene by a reaction in the presence of at least one catalyst in at least one reactor. The reaction is performed by introducing a starting material gas comprising the fluoroethylene into the reactor, and the water content in the starting material gas is 150 ppm by mass or less based on the total mass of the starting material gas.
    Type: Application
    Filed: July 16, 2021
    Publication date: November 4, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoyuki IWAMOTO, Takashi USUI, Takehiro CHAKI, Kazuhiro TAKAHASHI, Tsubasa NAKAUE
  • Publication number: 20210340084
    Abstract: It is an object to provide a new azeotropic or azeotropic-like composition comprising HCFC-142. The present disclosure provides, as its solution, an azeotropic or azeotropic-like composition comprising a refrigerant, wherein the refrigerant comprises 2-chloro-1,1-difluoroethane (HCFC-142) and at least one additional compound selected from the group consisting of trans-1,2-dichloroethylene (HCO-1130(E)) and the like.
    Type: Application
    Filed: July 15, 2021
    Publication date: November 4, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Kazuhiro TAKAHASHI
  • Publication number: 20210332279
    Abstract: The disclosure provides a novel composition comprising trans-1,2-difluoroethylene. The disclosure provides the following: a composition comprising trans-1,2-difluoroethylene (HFO-1132(E)) and at least one additional compound; the composition that is an azeotropic or azeotrope-like composition; and use of the composition as a heat transfer medium, a foaming agent, or a propellant.
    Type: Application
    Filed: July 8, 2021
    Publication date: October 28, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Kazuhiro TAKAHASHI
  • Publication number: 20210323899
    Abstract: The present disclosure provides a method for purifying HFO-1132 to a high purity while suppressing the isomerization and loss of HFO-1132. Specifically, the present disclosure provides a method for purifying 1,2-difluoroethylene, which is HFO-1132, the method comprising, in this order, step 1 of bringing a composition comprising trans-1,2-difluoroethylene, which is HFO-1132(E), and water into contact with a zeolite having an average pore size of 2 to 4 ? to reduce the water content from the composition; and step 2 of recovering a purified product containing HFO-1132(E) and a reduced content of water, and containing less than 0.1% by volume of HFO-1132(Z).
    Type: Application
    Filed: June 28, 2021
    Publication date: October 21, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takashi USUI, Kazuhiro TAKAHASHI, Tomoyuki IWAMOTO
  • Publication number: 20210317054
    Abstract: The production method according to the present disclosure comprises obtaining a product containing the fluoroethane from a fluoroethylene by a reaction in the presence of catalysts. Each catalyst is formed by supporting a noble metal on a carrier. A reactor for performing the reaction is filled with a catalyst having a noble metal concentration of C1 mass % based on the entire catalyst and a catalyst having a noble metal concentration of C2 mass % based on the entire catalyst to form an upstream portion and a downstream portion, respectively; and C1<C2. The reaction is performed by bringing the fluoroethylene represented by formula (3) and hydrogen gas into contact with the upstream portion and the downstream portion in this order.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 14, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoyuki IWAMOTO, Takashi USUI, Takehiro CHAKI, Tsubasa NAKAUE, Kazuhiro TAKAHASHI
  • Publication number: 20210309593
    Abstract: The production method according to the present disclosure comprises obtaining a product comprising a fluoroethane from a fluoroethylene by a reaction in the presence of at least one catalyst. The reaction is performed in two or more reaction zones. Each reaction zone comprises a catalyst, and the fluoroethylene is supplied to each reaction zone to perform the reaction.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 7, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoyuki IWAMOTO, Takashi USUI, Takehiro CHAKI, Kazuhiro TAKAHASHI, Tsubasa NAKAUE
  • Patent number: 11124467
    Abstract: Provided is a method for producing HCFC and/or HFC by subjecting a halogenated hydrocarbon and anhydrous hydrogen fluoride to a fluorination reaction in the presence of a catalyst, whereby efficient production can be achieved, without the need to stop the production every time catalytic activity is regenerated or recovered, and without making facilities excessive. Provided as a solution therefor is a method comprising (A) subjecting a halogenated hydrocarbon and anhydrous hydrogen fluoride to a fluorination reaction in at least two reactors each in the presence of a catalyst to thereby obtain HCFC and/or HFC; and (B) while halting the reaction in at least one of the reactors, obtaining HCFC and/or HFC by the reaction in at least one other reactor.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: September 21, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuhiro Takahashi, Shuuzou Kida, Tatsuya Takakuwa, Masanobu Nishitsuji