Patents Assigned to Zeon Corporation
  • Publication number: 20240164212
    Abstract: It would be helpful to provide a sheet-form thermoelectric conversion module with excellent thermoelectric conversion characteristics. A thermoelectric conversion module according to the disclosure is a thermoelectric conversion module formed in sheet form, the thermoelectric conversion module being disposed in contact or proximity to a heat source and generating power based on a temperature difference between a portion close to the heat source and a portion away from the heat source, the thermoelectric conversion module including an incision penetrating in a sheet thickness direction, wherein by stretching the thermoelectric conversion module in a predetermined direction, mutually opposite edges of the incision are separated, and the thermoelectric conversion module is transformed from a sheet form A into a three-dimensional structural form B protruding in the sheet thickness direction.
    Type: Application
    Filed: March 30, 2022
    Publication date: May 16, 2024
    Applicants: ZEON CORPORATION, Tokyo University of Science Foundation
    Inventors: Hideki UCHIDA, Takashi NAKAJIMA, Masahiro MOTOSUKE, Takahiro YAMAMOTO
  • Publication number: 20240158319
    Abstract: The purpose of the present invention is to provide a catalyst that enables a hydrogenation reaction of cyclopentadiene to cyclopentene in a gas phase that exhibits both a high conversion rate and high selectivity, and a method for producing the cyclopentene in a gas phase that exhibits both a high conversion rate and high selectivity. A catalyst according to the disclosure and a method for producing cyclopentadienecyclopentene according to the disclosure are a catalyst and a method for producing cyclopentene using the catalyst that is used in a hydrogenation reaction of cyclopentadiene in a gas phase to form the cyclopentene, the catalyst including palladium (Pd) and a titanium dioxide (TiO2) support, wherein the titanium dioxide (TiO2) support contains anatase-type titanium dioxide (TiO2).
    Type: Application
    Filed: March 23, 2022
    Publication date: May 16, 2024
    Applicant: ZEON CORPORATION
    Inventors: Chihiro NISHINOHARA, Takashi SASANUMA
  • Publication number: 20240158605
    Abstract: An elastomer composition contains a solvent in a proportion of not less than 1 part by mass and less than 60 parts by mass per 100 parts by mass of an elastomer. The solvent includes an organic solvent A having high affinity with carbon nanotubes and having a boiling point of 200° C. or lower and an organic solvent B having high affinity with the elastomer and having a boiling point of 200° C. or lower. The solvent results in the elastomer having a volume swelling degree of 150% or more and has a relative energy difference (REDCNT) of 1.5 or less.
    Type: Application
    Filed: March 30, 2022
    Publication date: May 16, 2024
    Applicants: ZEON CORPORATION, National Institute of Advanced Industrial Science and Technology
    Inventors: Yoshihisa TAKEYAMA, Masahiro UENO, Ryoichi KISHI, Ken KOKUBO, Takeo YAMADA
  • Publication number: 20240160102
    Abstract: Provided is a technique that enables formation of a resist pattern having little resist pattern top loss and high contrast. A positive resist composition that contains a copolymer A, a copolymer B, and a solvent and in which a difference between surface free energy of the copolymer A and surface free energy of the copolymer B is 4 mJ/m2 or more is used as a positive resist composition.
    Type: Application
    Filed: February 1, 2022
    Publication date: May 16, 2024
    Applicant: ZEON CORPORATION
    Inventor: Manabu HOSHINO
  • Publication number: 20240158565
    Abstract: Provided is a vessel having reduced non-specific adsorption of protein to an inner wall surface of an accommodating member. The vessel includes an accommodating member obtained through shaping of a shaping material that contains a resin. An inner wall surface of the accommodating member has a zeta-potential at pH 7.0 of less than ?40.0 mV and a dispersion term component of surface free energy of less than 24.5 mJ/m2.
    Type: Application
    Filed: March 22, 2022
    Publication date: May 16, 2024
    Applicant: ZEON CORPORATION
    Inventors: Taichi SAWAGUCHI, Yosuke HARAUCHI
  • Patent number: 11984674
    Abstract: The antenna device A1 includes an antenna 1 configured to transmit and/or receive radio waves, and a dielectric elastomer drive element 2 including a dielectric elastomer layer 21 and a pair of electrode layers 22 sandwiching the dielectric elastomer layer 21. The dielectric elastomer drive element is capable of changing an antenna characteristic of the antenna 1. With such a configuration, the antenna device can be made smaller and lighter while improving its antenna characteristics.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: May 14, 2024
    Assignees: ZEON CORPORATION
    Inventors: Seiki Chiba, Mikio Waki, Keisuke Oguma, Shinji Ozawa
  • Patent number: 11980371
    Abstract: An indwelling clip includes a clip main body having a pair of arm plate portions that can be opened in a substantially V shape with an elastic force and claw portions formed on respective tip portions of the arm plate portions. The indwelling clip also includes a fastening ring attached to the arm plate portions so as to be movable along a longitudinal direction of the pair of arm plate portions and be able to close the pair of arm plate portions by moving in a direction of the claw portions. An outer surface of the claw portion is provided with a fluorescent body containing a fluorescent pigment emitting red or near infrared light by being irradiated with excitation light.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: May 14, 2024
    Assignee: ZEON CORPORATION
    Inventors: Tatsurou Sugitani, Hikaru Mizuno, Masakazu Ninomiya
  • Patent number: 11981773
    Abstract: A ring-opened copolymer including structural units derived from a norbornene compound having a specific structure and structural units derived from a monocyclic olefin, wherein the proportion of the structural units derived from a norbornene compound is 25 to 90 wt % and the proportion of the structural units derived from a monocyclic olefin is 10 to 75 wt % relative to the total repeating structural units in the ring-opened copolymer, the weight average molecular weight of the ring-opened copolymer is 100,000 to 1,000,000, and the cis/trans ratio of the ring-opened copolymer is 0/100 to 50/50.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: May 14, 2024
    Assignee: ZEON CORPORATION
    Inventors: Yasuo Tsunogae, Shingo Okuno
  • Patent number: 11984600
    Abstract: Provided is a binder composition for an electrochemical device that has excellent viscosity stability and is capable of forming an electrode having excellent peel strength. The binder composition contains a polymer including a nitrile group-containing monomer unit, N-methyl-2-pyrrolidone, and a halogenated hydrocarbon. The content of the halogenated hydrocarbon is not less than 2 mass ppm and not more than 400 mass ppm relative to the content of the polymer.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: May 14, 2024
    Assignee: ZEON CORPORATION
    Inventors: Akito Nakai, Naoki Takahashi
  • Patent number: 11981566
    Abstract: Provided is a production method of a carbon sheet having a structure intertwining only carbon nanotubes and having a porosity of 5% to 90%. The method comprises: removing a solvent from a dispersion liquid containing carbon nanotubes, spacer particles, and the solvent to obtain a primary sheet containing the carbon nanotubes and the spacer particles; and removing the spacer particles from the primary sheet. Alternatively, the method comprises: impregnating a porous substrate made from carbon with a dispersion liquid containing carbon nanotubes and a solvent, to obtain a dispersion liquid-impregnated porous substrate; and removing the solvent from the dispersion liquid-impregnated porous substrate. Alternatively, the method comprises: dispersing carbon nanotubes in a solvent to obtain a dispersion liquid, wherein an average bundle diameter of the carbon nanotubes in the dispersion liquid is 0.5 ?m or more and 1,000 ?m or less; and removing the solvent from the dispersion liquid.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: May 14, 2024
    Assignee: ZEON CORPORATION
    Inventors: Tomoko Yamagishi, Mitsugu Uejima
  • Publication number: 20240154088
    Abstract: Provided is an electrode for an electrochemical device that has excellent flexibility, suppressed warping, and reduced interfacial resistance between an electrode mixed material layer and a current collector and that can cause an electrochemical device to display excellent high-temperature storage characteristics. The electrode includes a current collector and an electrode mixed material layer formed on the current collector. The current collector is formed of either or both of aluminum and an aluminum alloy, has a thickness of not less than 5 ?m and less than 15 ?m, and has a breaking elongation of 10% to 40%. The electrode mixed material layer contains electrode active material particles, a conductive material including a fibrous carbon material, and a binder and has a mass per unit area of 21 mg/cm2 to 30 mg/cm2, a storage modulus of 0.1 GPa to 2.2 GPa, and a loss modulus of 0.01 GPa to 0.04 GPa.
    Type: Application
    Filed: March 30, 2022
    Publication date: May 9, 2024
    Applicant: ZEON CORPORATION
    Inventors: Yukie ITO, Kazuki ASAI
  • Patent number: 11976201
    Abstract: Provided is a resin film including: a resin containing a polymer; a hygroscopic particle dispersed in the resin and having a primary particle diameter of 40 nm or more and 80 nm or less and a refractive index of 1.2 or more and 3.0 or less; and an organic solvent-soluble dispersant. Preferably the resin is a silicon-containing resin. Preferably the silicon-containing resin is a silicon-containing thermoplastic resin. Preferably the silicon-containing thermoplastic elastomer contains a graft polymer having a silicon-containing group as the polymer. An organic electroluminescent device including the resin film is also provided.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: May 7, 2024
    Assignee: ZEON CORPORATION
    Inventor: Hiroyasu Inoue
  • Patent number: 11978903
    Abstract: Provided is a binder composition for a secondary battery with which a slurry composition for a secondary battery having low foaming can be produced, and that can improve handleability of a functional layer or electrode layer formed using the produced slurry composition for a secondary battery. The binder composition for a secondary battery contains a polymer A and a solvent. The polymer A includes an amide group-containing monomer unit and a carboxylic acid ester-containing monomer unit including an alkyl chain having a carbon number of not less than 2 and not more than 9. Content of the carboxylic acid ester-containing monomer unit in the polymer A is not less than 12 mass % and not more than 28 mass %.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: May 7, 2024
    Assignee: ZEON CORPORATION
    Inventors: Yusuke Adachi, Kenya Sonobe, Yasuhiro Isshiki, Ai Masuda
  • Patent number: 11976147
    Abstract: A binder composition for a non-aqueous secondary battery electrode contains: a polymer A including a (meth)acrylic acid ester monomer unit; a polymer B having an iodine value of not less than 5 g/100 g and not more than 100 g/100 g; a polymer C including a nitrile group-containing monomer unit in a proportion of not less than 70 mass % and not more than 98 mass %; and an organic solvent.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: May 7, 2024
    Assignee: ZEON CORPORATION
    Inventors: Yukie Ito, Tomoya Murase, Takafumi Sekimoto
  • Patent number: 11975557
    Abstract: An identification medium includes a first layer, and a second layer disposed thereon in a manner of overlapping with the first layer. The first layer is capable of reflecting one of clockwise circular polarized light and counterclockwise circular polarized light and allowing to pass therethrough the remaining circular polarized light. The second layer is capable of reflecting at least a portion of circular polarized light having the same rotation direction as that of the circular polarized light that the first layer reflects, and allowing to pass therethrough circular polarized light having an opposite rotation direction to that of the circular polarized light reflected by the first layer. A ratio (Ssf2/S2) of Ssf2 defined by the following formula (2) relative to S2 defined by the following formula (1) is more than 0.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: May 7, 2024
    Assignee: ZEON CORPORATION
    Inventor: Yasuhide Fujino
  • Patent number: 11976180
    Abstract: A xanthogen compound dispersion is formed by dispersing a xanthogen compound in water or alcohol, wherein a volume average particle size of the xanthogen compound is 0.001 to 9 ?m.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: May 7, 2024
    Assignee: ZEON CORPORATION
    Inventors: Misa Hayashi, Junji Kodemura
  • Publication number: 20240140803
    Abstract: The purpose of the present invention is to provide a method and an apparatus for producing carbon nanotube aggregates to improve the contact efficiency between a source gas and catalysts, thereby enabling the efficient production of high-quality CNT aggregates. A method for producing carbon nanotube aggregates according to the disclosure is a method including a growth step of growing the carbon nanotube aggregates on substrates with catalysts on surfaces. In the growth step, a source gas supply step of forming a substrate layer by stacking the substrates at a lower portion of a growth furnace configured to perform the growth step, and supplying a source gas to the substrate layer through a plurality of gas injection ports arranged at the lower portion of the growth furnace, and an in-growth furnace stir and conveyance step of mechanically stirring and/or conveying the substrate layer are performed at least in part in an overlapping manner.
    Type: Application
    Filed: February 14, 2022
    Publication date: May 2, 2024
    Applicant: ZEON CORPORATION
    Inventors: Akiyoshi SHIBUYA, Keiichi KAWATA
  • Publication number: 20240145782
    Abstract: Disclosed is an adhesive layer for non-aqueous secondary battery, which can strongly bond battery members to each other by pressurization at normal temperature while ensuring inkjet discharge characteristics, and to provide a composition for non-aqueous secondary battery adhesive layer, which can allow a non-aqueous secondary battery to exert excellent battery characteristics. The presently disclosed composition for non-aqueous secondary battery adhesive layer is a composition for non-aqueous secondary battery adhesive layer including a particulate polymer, the particulate polymer has a core-shell structure that includes a core portion and a shell portion partially covering an outer surface of the core portion, and the shell portion is formed of a polymer including an alkylene oxide group-containing monomer unit.
    Type: Application
    Filed: April 26, 2022
    Publication date: May 2, 2024
    Applicant: ZEON CORPORATION
    Inventors: Yutaka MARUHASHI, Masanobu SATO
  • Publication number: 20240140801
    Abstract: A carbon film excellent in electromagnetic shielding performance is provided. The carbon film is made of a carbon nanotube assembly and has a fractal dimension of 2.6 or more and 4 or less in a wavenumber range of 0.0001 (1/?) or more and 0.001 (1/?) or less when a scattering profile obtained by performing ultra-small-angle X-ray scattering on at least one surface of the carbon film is fitted to the Beaucage equation, while having a porosity of 80% or more and 95% or less.
    Type: Application
    Filed: March 14, 2022
    Publication date: May 2, 2024
    Applicant: ZEON CORPORATION
    Inventors: Tomoko YAMAGISHI, Yoshihisa TAKEYAMA
  • Patent number: 11970562
    Abstract: A phase difference film composed of a resin containing a copolymer including polymerization units A and B, the phase difference film including a cylindrical phase separation structure that generates a structural birefringence, the phase separation structure including a phase (A) having the polymerization unit A as a main component and a phase (B) having the polymerization unit B as a main component, and the phase difference film satisfying the following condition (1) or (2). Condition (1): D(A)>D(B) and f(B)>0.5, and a direction giving a maximum refractive index among in-plane directions and an orientation direction of a cylinder in the phase separation structure are parallel to each other. Condition (2): D(A)>D(B) and f(A)>0.5, and a direction giving a maximum refractive index among in-plane directions and an orientation direction of a cylinder in the phase separation structure are orthogonal to each other.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: April 30, 2024
    Assignee: ZEON CORPORATION
    Inventors: Takeshi Asada, Hironari Sudeji, Kensaku Fujii, Yusuke Yasu, Hiroya Nishioka