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: 11906207
    Abstract: A two-stage refrigeration apparatus (500) includes a first cycle (510) and a second cycle (520). The first cycle (510) includes a first compressor (511), a first condenser (512), a first expansion mechanism (513), and a first evaporator (514) that are arranged in such a manner as to be connected to the first cycle. A first refrigerant circulates through the first cycle. The second cycle (520) includes a second downstream-side condenser (523) and a second evaporator (527) that are arranged in such a manner as to be connected to the second cycle. A second refrigerant circulates through the second cycle. The first evaporator (514) and the second downstream-side condenser (523) constitute a cascade condenser (531). In the cascade condenser (531), heat is exchanged between the first refrigerant and the second refrigerant. At least one of the first refrigerant and the second refrigerant is a refrigerant mixture containing at least 1,2-difluoroethylene (HFO-1132(E)).
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: February 20, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Eiji Kumakura, Takuro Yamada, Atsushi Yoshimi, Ikuhiro Iwata, Mitsushi Itano, Daisuke Karube, Yuuki Yotsumoto, Kazuhiro Takahashi, Tatsuya Takakuwa, Yuzo Komatsu, Shun Ohkubo
  • Publication number: 20240050792
    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 24, 2023
    Publication date: February 15, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Kazuhiro TAKAHASHI
  • Publication number: 20240034721
    Abstract: Provided is, as a radioactive halogen labeling precursor compound that is highly reactive and stable, a compound represented by the following general formula (II): wherein R1 and R2 each independently represent an alkyl group having 5 to 20 carbon atoms, X1 and X2 each independently represent a halogen atom, and R3 represents a monovalent group derived from a sugar, or the like.
    Type: Application
    Filed: January 18, 2022
    Publication date: February 1, 2024
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, FUKUSHIMA MEDICAL UNIVERSITY, TAIYO NIPPON SANSO CORPORATION
    Inventors: Hiroshi TANAKA, Kazuhiro TAKAHASHI, Miho SUZUKI
  • Publication number: 20230416175
    Abstract: An object is to provide an efficient method for producing HFC-143 or HFO-1132. Provided as a means for solution is a method for producing 1,1,2-trifluoroethane (HFC-143), comprising subjecting 1,1,2-trifluoroethylene to a reduction reaction with a reducing agent in the presence of a catalyst to obtain HFC-143.
    Type: Application
    Filed: September 7, 2023
    Publication date: December 28, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuhiro TAKAHASHI, Takehiro CHAKI, Tsubasa NAKAUE, Tomoyuki IWAMOTO, Megumi KUSHIDA
  • Patent number: 11841246
    Abstract: The disclosure provides a device holding member and a device holding member set. The device holding member is engaged with a bottom member formed with a hole or a frame supporting the bottom member and holds a device arranged on the bottom member. The device holding member includes a belt and a locking member. The belt includes an end part provided with an engaging member engageable with an edge part of the bottom member or the frame and holds the device. The locking member is provided between the engaging member and the device and locks a part of the belt to the hole.
    Type: Grant
    Filed: August 15, 2021
    Date of Patent: December 12, 2023
    Assignee: FUNAI ELECTRIC CO., LTD.
    Inventors: Manabu Murayama, Naoyuki Wakabayashi, Kazuhiro Takahashi, Shingo Hamada
  • Publication number: 20230384177
    Abstract: Disclosed is a pressure and temperature sensor capable of precisely measuring a pressure. A sensor body, a diaphragm defining an accommodation space together with the sensor body, and a transmission substance charged in the accommodation space are provided, and a pressure measurement body and a temperature measurement body which is a separate body from the pressure measurement body are disposed in the accommodation space.
    Type: Application
    Filed: October 8, 2021
    Publication date: November 30, 2023
    Inventors: Tadayoshi MATSUSHITA, Kentaro YAMAMOTO, Kazuhiro TAKAHASHI, Keizo OISHI, Hiroshi KOKITA
  • Patent number: 11826596
    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: Grant
    Filed: October 7, 2021
    Date of Patent: November 28, 2023
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventor: Kazuhiro Takahashi
  • Publication number: 20230373881
    Abstract: In order to produce high yields of astatine-211 without contamination of chloride ions, provided is a method for producing astatine-211, including (1) a step of generating astatine-211 by irradiating bismuth with ? rays; (2) a step of heating the astatine-211 generated in step (1) to vaporize; (3) a step of cooling the astatine-211 that has been vaporized in step (2) and collecting the astatine-211 with a volatile and polar solvent to obtain an astatine-211 solution; (4) a step of adding a weak acid salt to the astatine-211 solution obtained in step (3) to obtain an astatine-211 solution containing the weak acid salt; and (5) a step of removing the solvent from the astatine-211 solution containing the weak acid salt obtained in step (4).
    Type: Application
    Filed: May 6, 2021
    Publication date: November 23, 2023
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, FUKUSHIMA MEDICAL UNIVERSITY
    Inventors: Hiroshi TANAKA, Kazuhiro TAKAHASHI, Miho SUZUKI
  • Patent number: 11820933
    Abstract: A refrigeration cycle apparatus (10) includes a refrigerant circuit (11) including a compressor (12), a heat source-side heat exchanger (13), an expansion mechanism (14), and a usage-side heat exchanger (15). In the refrigerant circuit (11), a refrigerant containing at least 1,2-difluoroethylene (HFO-1132 (E)) is sealed. At least during a predetermined operation, in at least one of the heat source-side heat exchanger (13) and the usage-side heat exchanger (15), a flow of the refrigerant and a flow of a heating medium that exchanges heating with the refrigerant are counter flows.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: November 21, 2023
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Eiji Kumakura, Takuro Yamada, Atsushi Yoshimi, Ikuhiro Iwata, Mitsushi Itano, Daisuke Karube, Yuuki Yotsumoto, Kazuhiro Takahashi, Tatsuya Takakuwa, Yuzo Komatsu, Shun Ohkubo
  • Publication number: 20230357893
    Abstract: In a titanium material, when a chemical composition of a surface is analyzed by X-ray photoelectron spectroscopy, the titanium material contains, as a composition of the surface, Zn: 0.1 atom% or more and Ca: 0.5 atom% or more, and the titanium material contains, as a composition of a surface oxide film, C: 20.0 atom% or less and F: 5.0 atom% or less.
    Type: Application
    Filed: September 14, 2021
    Publication date: November 9, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Minami MATSUMOTO, Kazuhiro TAKAHASHI
  • Publication number: 20230331647
    Abstract: An object of the present invention is to provide a method that can efficiently remove water contained in pentafluoropropane. Provided as a solution is a method comprising distilling a composition comprising pentafluoropropane and water to thereby extract pentafluoropropane with a water content higher than that of the composition as a first stream, and pentafluoropropane with a water content lower than that of the composition as a second stream.
    Type: Application
    Filed: June 21, 2023
    Publication date: October 19, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yuuko OHHIGASHI, Tatsuya TAKAKUWA, Kazuhiro TAKAHASHI
  • Publication number: 20230321956
    Abstract: To provide a glass plate with resin frame and a method for producing a glass plate with resin frame, by which high gloss of a design surface with a color expressed by a decorative molding can be achieved. A glass plate 10 with resin frame, which comprises a glass plate 12, a resin frame 14 provided on a peripheral portion of the glass plate 12, and a decorative molding 16 disposed on the resin frame 14, the resin frame 14 being formed integrally with the glass plate 12 and the decorative molding 16, wherein the decorative molding 16 is a transparent design film, and when the glass plate 10 with resin frame is attached to a vehicle, the decorative molding 16 is disposed on the vehicle exterior side.
    Type: Application
    Filed: June 15, 2023
    Publication date: October 12, 2023
    Applicant: AGC Inc.
    Inventors: Yoshio KOSAKA, Kazuhiro TAKAHASHI
  • Patent number: 11780793
    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: Grant
    Filed: August 18, 2021
    Date of Patent: October 10, 2023
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Takehiro Chaki, Tsubasa Nakaue, Megumi Kushida, Kazuhiro Takahashi
  • Patent number: 11780300
    Abstract: A fixed window glass with a division bar, includes a fixed window glass adapted to be fixed to a vehicle and having an edge portion; and a division bar attached to the edge portion, the division bar comprising a guide portion formed in a U-shaped in section configured to guide elevating and lowering movement of an elevating window glass; wherein the division bar further comprises a first member fixed to the edge portion of the fixed window glass, and a second member to be attachable to the first member from an exterior side of the vehicle; and wherein the second member is attached to the first member, and the division bar has an exterior side surface exposed on the exterior side of the vehicle such that the exposed exterior side surface forms a flush surface.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: October 10, 2023
    Assignee: AGC INC.
    Inventors: Naonori Hatta, Ryoichi Urata, Kazuhiro Takahashi, Yoshio Kosaka
  • Patent number: 11774357
    Abstract: A terahertz wave attenuated total reflection spectroscopic method, includes: a first step of disposing a measurement target of which a volume is changed during a measurement period on a reflection surface; and a second step of acquiring data including a plurality of detection results respectively corresponding to a plurality of times separated from each other during the measurement period by allowing a terahertz wave to be incident on the reflection surface from a side opposite to the measurement target and by detecting the terahertz wave reflected on the reflection surface, during the measurement period. In the second step, a state in which a substantially constant pressure is applied to the measurement target disposed on the reflection surface is maintained during the measurement period.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: October 3, 2023
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Kazuhiro Takahashi, Kouichiro Akiyama, Hiroshi Satozono
  • Publication number: 20230294497
    Abstract: A vehicle window parts assembly includes a fixed window glass with a division bar, the fixed window glass with a division bar including a fixed window glass having an outer periphery, a resin frame attached to the periphery, and a division bar attached to a surface of the resin frame opposite to the fixed window glass and having a guide portion formed therein, such that the resin frame and the division bar are integrally molded to the fixed window glass as an integral molded product; and a glass run including a first glass run vertical side, a second glass run vertical side, and a glass run upper side connecting the first glass run vertical side and the second glass run vertical side; wherein the glass run further includes a first coupler, and the fixed window glass with a division bar further includes a second coupler.
    Type: Application
    Filed: May 23, 2023
    Publication date: September 21, 2023
    Applicant: AGC Inc.
    Inventors: Kazuhiro TAKAHASHI, Ryoichi URATA, Naonori HATTA, Takafumi INOUE
  • Patent number: 11747737
    Abstract: An exposure apparatus includes an illumination optical system for illuminating an original including a periodic pattern, a projection optical system for forming an image of the original on a substrate, a controller configured to cause light from the illumination optical system to be obliquely incident on the original such that a light intensity distribution which is line-symmetric with respect to a line, passing through an origin of a pupil region of the projection optical system and orthogonal to a periodic direction of the periodic pattern, is formed in the pupil region by diffracted light beams including diffracted light of not lower than 2nd-order from the periodic pattern, and to control exposure of the substrate such that each point in a shot region of the substrate is exposed in not less than two focus states.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: September 5, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kazuhiro Takahashi
  • Publication number: 20230271484
    Abstract: A glass plate with a resin frame for a vehicle window, includes a glass plate; a resin frame disposed on a peripheral edge area of the glass plate; and a decorative molding disposed on the resin frame; wherein the resin frame is molded to the glass plate and the decorative molding as one unit; and wherein a spacer is disposed between the resin frame and the decorative molding, the spacer being solid at room temperature.
    Type: Application
    Filed: May 4, 2023
    Publication date: August 31, 2023
    Applicant: AGC Inc.
    Inventors: Kazuhiro TAKAHASHI, Hayato KATO
  • Patent number: 11724975
    Abstract: An object of the present invention is to provide a method that can efficiently remove water contained in pentafluoropropane. Provided as a solution is a method comprising distilling a composition comprising pentafluoropropane and water to thereby extract pentafluoropropane with a water content higher than that of the composition as a first stream, and pentafluoropropane with a water content lower than that of the composition as a second stream.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: August 15, 2023
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yuuko Ohhigashi, Tatsuya Takakuwa, Kazuhiro Takahashi
  • Publication number: 20230241257
    Abstract: It is an object of the present invention to provide a novel halogenated biotin-modified dimer capable of performing imaging diagnosis or treatment. According to the present invention, a compound represented by the following formula (1) or a salt thereof is provided: wherein L1 represents a trivalent linking group, L2 represents a divalent linking group, Hal represents a halogen, p represents an integer of 1 to 5, and q, r, s, and t each independently represent an integer of 1 to 8.
    Type: Application
    Filed: April 13, 2021
    Publication date: August 3, 2023
    Applicants: THE UNIVERSITY OF TOKYO, SAVID THERAPEUTICS INC., FUKUSHIMA MEDICAL UNIVERSITY
    Inventors: Motomu KANAI, Kenzo YAMATSUGU, Toshifumi TATSUMI, Tatsuhiko KODAMA, Akira SUGIYAMA, Masanobu TSUKAGOSHI, Yuzo TODA, Kohshin WASHIYAMA, Kazuhiro TAKAHASHI, Songji ZHAO, Naoyuki UKON, Miho SUZUKI