Patents Assigned to Sumitomo Electric Fine Polymer, Inc.
  • Publication number: 20250135406
    Abstract: A porous membrane laminate according to one aspect of the present disclosure has one or more porous membranes containing polytetrafluoroethylene as a main component, wherein the porous membrane laminate satisfies a following formula (1): P / ? > - 31.6 × ln ? Ra + 168 ( 1 ) wherein P is an average bubble point [kPa]; ? is a surface tension [dyn/cm] of a test liquid used in measurement of the average bubble point; and Ra is a surface roughness [nm] of the porous membrane, and 14 nm?Ra?96 nm.
    Type: Application
    Filed: November 15, 2022
    Publication date: May 1, 2025
    Applicants: SUMITOMO ELECTRIC FINE POLYMER, INC., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hirokazu KATAYAMA, Mitsuhiro AKAMA, Takamasa HASHIMOTO, Fumihiro HAYASHI, Hiroyuki TSUJIWAKI
  • Publication number: 20250108340
    Abstract: A porous membrane according to the present disclosure includes polytetrafluoroethylene as a main component, wherein a melting curve obtained in a first run of differential scanning calorimetry at a rate of temperature increase of 10° C./min has an endothermic peak in a range of 300° C. to 360° C., and a difference between an onset temperature and an endset temperature of the endothermic peak is 20° C. or less.
    Type: Application
    Filed: October 26, 2022
    Publication date: April 3, 2025
    Applicants: SUMITOMO ELECTRIC FINE POLYMER, INC., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hirokazu KATAYAMA, Atsushi FUKUNAGA, Takamasa HASHIMOTO, Kanako CHINO, Hiroyuki TSUJIWAKI
  • Patent number: 12259052
    Abstract: The valve member according to one embodiment of the present disclosure is a resin formed product having a crosslinked ethylene-tetrafluoroethylene copolymer as a main component, and having a crosslinking density of 85.0 mol/m3 or more calculated from a storage modulus at 300° C.
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: March 25, 2025
    Assignee: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventor: Masato Baba
  • Publication number: 20250087912
    Abstract: A heat shrinkable connection component according to one embodiment of the present disclosure is used for the purpose of connecting an insulated wire that is obtained by covering a conductor with an insulating layer. This heat shrinkable connection component is provided with a heat shrinkable tube that has a melting point of 210° C. to 250° C. and a pair of sealing parts that are arranged on the inner circumferential surfaces of both end parts of the heat shrinkable tube; and the sealing material of the sealing parts has a shear viscosity of 1,000 Pa·s to 2,000 Pa·s at a shear rate of 100/s at 250° C., and a shear viscosity of 7,000 Pa·s to 70,000 Pa·s at a shear rate of 0.01/s at 215° C.
    Type: Application
    Filed: December 21, 2022
    Publication date: March 13, 2025
    Applicants: SUMITOMO ELECTRIC FINE POLYMER, INC., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Keiji ISHIBASHI, Seiichirou MURATA, Ryota FUKUMOTO
  • Publication number: 20250050275
    Abstract: A hollow fiber membrane module according to an aspect of the present disclosure comprises: a hollow fiber membrane bundle that has a plurality of hollow fiber membranes aligned in one direction; a housing that accommodates the hollow fiber membrane bundle; and a potting portion provided around both ends or one end of the hollow fiber membrane bundle, in which space between an outer surface of the hollow fiber membranes and an inner surface of the housing is filled with a potting agent, wherein each of the hollow fiber membranes has a body portion, and an enlarged-diameter portion provided at both ends or one end of the body portion and having an inner diameter enlarged as compared to the body portion, and the enlarged-diameter portion is buried in the potting portion.
    Type: Application
    Filed: December 21, 2022
    Publication date: February 13, 2025
    Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Fumihiro HAYASHI, Yasuhiko MUROYA, Takamasa HASHIMOTO, Yoshimasa SUZUKI
  • Patent number: 12214316
    Abstract: A method for manufacturing a hollow fiber membrane module, the hollow fiber membrane module including: a hollow fiber membrane bundle including a plurality of hollow fiber membranes; a housing configured to contain the hollow fiber membrane bundle; and a potting part in which a potting agent is added between an outer surface of the hollow fiber membranes and an inner surface of the housing at both end regions or at one end region of the hollow fiber membrane bundle, wherein the method including: providing a sheet-shaped spacer in a space between the hollow fiber membranes at the both end regions or at the one end region of the hollow fiber membrane bundle; and adding a potting agent between the outer surface of the hollow fiber membranes and the inner surface of the housing at the both end regions or at the one end region of the hollow fiber membrane bundle such that the provided spacer is embedded, wherein the potting agent includes resin, rubber, or elastomer, as a main ingredient, and wherein the spacer is
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: February 4, 2025
    Assignee: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Fumihiro Hayashi, Yasuhiko Muroya, Takamasa Hashimoto, Yoshimasa Suzuki
  • Patent number: 12076693
    Abstract: A hollow-fiber membrane module according to an embodiment of the present disclosure includes a rectangular tubular outer casing with at least one sidewall being open, the outer casing having a plurality of open ports, and an inner casing configured such that a plurality of hollow-fiber membranes aligned in a longitudinal direction of the outer casing are placeable in the inner casing and configured to be insertable into the one sidewall.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: September 3, 2024
    Assignee: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Fumihiro Hayashi, Yasuhiko Muroya, Takamasa Hashimoto, Atsushi Uno, Yoshimasa Suzuki
  • Publication number: 20240246038
    Abstract: An aeration module capable of aerating a liquid supplied to inner portions of hollow-fiber membranes includes a housing containing a fluororesin as a main component, and a plurality of the hollow-fiber membranes containing polytetrafluoroethylene or a modified polytetrafluoroethylene as a main component. A porosity K [%], an average thickness T1 [mm], and an average outer diameter D2 [mm] of the hollow-fiber membranes satisfy a relation of a formula of K/(T1×D2×100)?2.0.
    Type: Application
    Filed: February 7, 2022
    Publication date: July 25, 2024
    Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Fumihiro HAYASHI, Takamasa HASHIMOTO, Yoshimasa SUZUKI
  • Publication number: 20240106221
    Abstract: The heat shrinkable tube according to the present disclosure contains an ethylene-tetrafluoroethylene copolymer as a main component. The heat shrinkable tube has a melting point of 210° C. to 250° C. and a storage elastic modulus of 0.8 MPa to 2.8 MPa at 250° C. to 280° C.
    Type: Application
    Filed: January 21, 2022
    Publication date: March 28, 2024
    Applicants: SUMITOMO ELECTRIC FINE POLYMER, INC., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Keiji ISHIBASHI, Seiichirou MURATA, Ryota FUKUMOTO
  • Patent number: 11801480
    Abstract: A hollow-fiber membrane according to an aspect of the present disclosure contains a polytetrafluoroethylene or a modified polytetrafluoroethylene as a main component and has an average outer diameter of 1 mm or less and an average inner diameter of 0.5 mm or less. In a measurement of a heat of fusion of the polytetrafluoroethylene or the modified polytetrafluoroethylene with a differential scanning calorimeter, when the polytetrafluoroethylene or modified polytetrafluoroethylene is subjected to a first step of heating from room temperature to 365° C., a second step of cooling from 365° C. to 350° C., maintaining the temperature, subsequently cooling from 350° C. to 330° C., and further cooling from 330° C. to 305° C., and a third step of cooling from 305° C. to 245° C. at a rate of ?50° C./min and subsequently heating from 245° C. to 365° C. at a rate of 10° C./min, a heat of fusion from 296° C. to 343° C. in the third step is 30.0 J/g or more and 45.0 J/g or less.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: October 31, 2023
    Assignee: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Fumihiro Hayashi, Yasuhiko Muroya, Takamasa Hashimoto, Atsushi Uno, Yoshimasa Suzuki
  • Patent number: 11648758
    Abstract: A formed article according to one embodiment of the present disclosure includes a cylindrical base layer containing a polyimide as a main component, a sliding layer disposed on an inner circumferential surface side of the base layer and containing a polyether ether ketone as a main component, and an outermost layer disposed on an outer circumferential surface side of the base layer and containing a fluororesin as a main component.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: May 16, 2023
    Assignee: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventor: Hong-Phuc Nguyen
  • Publication number: 20230029718
    Abstract: A method for manufacturing a sliding member according to one aspect of the present disclosure is a method for manufacturing a sliding member containing an ethylene-tetrafluoroethylene copolymer as a main component, and comprises processing a material containing an ethylene-tetrafluoroethylene copolymer as a main component, and irradiating a processed body obtained in the processing step with an electron beam.
    Type: Application
    Filed: November 20, 2020
    Publication date: February 2, 2023
    Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Fine Polymer, Inc.
    Inventors: Masato BABA, Hisashi OOGI, Kouichi KAMIOKA, Takahiro FUJIMOTO
  • Patent number: 11552356
    Abstract: An electricity storage device member is provided. The electricity storage device member includes a base material mainly composed of a metal and a resin layer stacked on the base material, in which the resin layer contains a crosslinked fluororesin.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: January 10, 2023
    Assignees: Sumitomo Electric Fine Polymer, Inc., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Makoto Nakabayashi, Hong-Phuc Nguyen, Keiji Kaita, Motoyoshi Okumura, Takuro Kikuchi
  • Publication number: 20220221681
    Abstract: The optical element holder according to the present disclosure is an optical element holder for holding an optical element, wherein the optical element holder is formed from an optical element holder resin compound, the optical element holder resin compound contains a thermoplastic resin as a main component, a melting curve obtained by differential scanning calorimetry analysis of the optical element holder resin compound at a temperature increase rate of 10° C./min has two peaks in a range of not lower than 160° C. and not higher than 230° C. and a range of not lower than 260° C. and not higher than 320° C., and a ratio of a melting heat quantity in the range of not lower than 160° C. and not higher than 230° C. to a total melting heat quantity is not less than 20% and not greater than 80%.
    Type: Application
    Filed: May 28, 2020
    Publication date: July 14, 2022
    Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Shohei OKABE, Hiroki YAMANE
  • Patent number: 11375615
    Abstract: A substrate for a printed circuit board according to an embodiment of the present invention includes a base film and a metal layer disposed on at least one of surfaces of the base film. In the substrate for a printed circuit board, an amount of nitrogen present per unit area, the amount being determined on the basis of a peak area of a N1s spectrum in XPS analysis of a surface of the base film exposed after removal of the metal layer by etching with an acidic solution, is 1 atomic % or more and 10 atomic % or less.
    Type: Grant
    Filed: August 6, 2016
    Date of Patent: June 28, 2022
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Printed Circuits, Inc., Sumitomo Electric Fine Polymer, Inc.
    Inventors: Yuichiro Yamanaka, Yoshio Oka, Satoshi Kiya, Yoshifumi Uchita, Makoto Nakabayashi
  • Patent number: 11339299
    Abstract: A method of making an oil repellent sheet material according to an embodiment of the present disclosures includes a step of applying to a porous sheet a composition for forming an oil repellent layer, the composition containing a solvent and an amorphous fluorine resin dispersed therein, and a step of swaging the porous sheet after the step of applying, wherein the porous sheet has a fibrous skeleton composed mainly of polytetrafluoroethylene, the method of making an oil repellent sheet material further comprising a heat treatment step of heating the porous sheet to which the composition for forming an oil repellent layer is applied, before or after the step of swaging.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: May 24, 2022
    Assignees: SUMITOMO ELETRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Atsushi Fukunaga, Fumihiro Hayashi
  • Publication number: 20210394122
    Abstract: A hollow-fiber membrane module according to an embodiment of the present disclosure includes a rectangular tubular outer casing with at least one sidewall being open, the outer casing having a plurality of open ports, and an inner casing configured such that a plurality of hollow-fiber membranes aligned in a longitudinal direction of the outer casing are placeable in the inner casing and configured to be insertable into the one sidewall.
    Type: Application
    Filed: September 20, 2019
    Publication date: December 23, 2021
    Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Fumihiro HAYASHI, Yasuhiko MUROYA, Takamasa HASHIMOTO, Atsushi UNO, Yoshimasa SUZUKI
  • Publication number: 20210379537
    Abstract: A hollow-fiber membrane according to an aspect of the present disclosure contains a polytetrafluoroethylene or a modified polytetrafluoroethylene as a main component and has an average outer diameter of 1 mm or less and an average inner diameter of 0.5 mm or less. In a measurement of a heat of fusion of the polytetrafluoroethylene or the modified polytetrafluoroethylene with a differential scanning calorimeter, when the polytetrafluoroethylene or modified polytetrafluoroethylene is subjected to a first step of heating from room temperature to 365° C., a second step of cooling from 365° C. to 350° C., maintaining the temperature, subsequently cooling from 350° C. to 330° C., and further cooling from 330° C. to 305° C., and a third step of cooling from 305° C. to 245° C. at a rate of ?50° C./min and subsequently heating from 245° C. to 365° C. at a rate of 10° C./min, a heat of fusion from 296° C. to 343° C. in the third step is 30.0 J/g or more and 45.0 J/g or less.
    Type: Application
    Filed: September 6, 2019
    Publication date: December 9, 2021
    Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Fumihiro HAYASHI, Yasuhiko MUROYA, Takamasa HASHIMOTO, Atsushi UNO, Yoshimasa SUZUKI
  • Publication number: 20210154903
    Abstract: There is provided a hollow extrusion-molded material formed by drawdown molding of a resin composition, the resin composition including, as a base resin, an ethylene-ethyl acrylate copolymer, or an ethylene-ethyl acrylate copolymer and linear low-density polyethylene, the resin composition including a bromine-based flame retardant, antimony trioxide and magnesium hydroxide, wherein a composition ratio between the ethylene-ethyl acrylate copolymer and the linear low-density polyethylene, a content of the bromine-based flame retardant, a content of the antimony trioxide, and a content of the magnesium hydroxide are within specified ranges. There are also provided a crosslinked polymer of the hollow extrusion-molded material, and a heat-shrinkable tube and a multilayer heat-shrinkable tube obtained from the crosslinked polymer.
    Type: Application
    Filed: May 8, 2019
    Publication date: May 27, 2021
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Satoshi YAMASAKI, Hayato AOI
  • Patent number: 10858487
    Abstract: A polytetrafluoroethylene formed product according to an aspect of the invention contains, as a principal component, a polytetrafluoroethylene having a crosslinked structure and has a PV limit of not less than 1600 MPa·m/min.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: December 8, 2020
    Assignees: SUMITOMO ELECTRIC FINE POLYMER, INC., DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuaki Ikeda, Hong-Phuc Nguyen, Hirotoshi Yoshida, Taku Yamanaka