Patents by Inventor Kazushi Furukawa

Kazushi Furukawa 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: 11932762
    Abstract: A two-component adhesive for an endoscope and a cured product thereof, the adhesive having a base resin and a curing agent. The base resin contains an epoxy resin (A), and the epoxy resin (A) includes an epoxy resin (a) having an average degree of polymerization of 2 or more. Also disclosed are an endoscope produced by using the adhesive for an endoscope and a method for producing the endoscope.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: March 19, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Kazushi Furukawa, Yoshihiro Nakai, Shigeki Uehira
  • Patent number: 11891505
    Abstract: Provided is a resin composition for an acoustic matching layer, the resin composition including an epoxy resin (A), a specific polyamine compound (B), and metal particles (C). The epoxy resin (A) includes at least one epoxy resin selected from the group consisting of bisphenol A epoxy resins, bisphenol F epoxy resins, and phenol novolac epoxy resins. Also provided are a cured product formed of the composition, an acoustic matching sheet, an acoustic probe, an acoustic measuring apparatus, a method for producing an acoustic probe, and an acoustic matching layer material set.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: February 6, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Kazuhiro Hamada, Kazushi Furukawa, Yoshihiro Nakai
  • Publication number: 20230399554
    Abstract: Provided are an epoxy resin adhesive for a medical device and its cured product, and a medical device member and a medical device. The epoxy resin adhesive includes the following components (A) to (C): (A) an epoxy resin; (B) a polyamine compound having two or more unsubstituted amino groups; and (C) a compound having a nonaromatic carbon-carbon double bond group and a phenolic hydroxy group.
    Type: Application
    Filed: August 28, 2023
    Publication date: December 14, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Kazushi FURUKAWA, Yoshihiro NAKAI
  • Publication number: 20230303789
    Abstract: Provided is a laminate having high sterilization resistance and suitable as a medical device constituent component and a medical device including the laminate. The laminate has a substrate, an interlayer on the substrate, and a polymer coating layer on the interlayer. The interlayer has a porous layer including a siloxane compound, and the siloxane compound has at least one of a constituent component derived from a compound bearing a reactive functional group and a hydrolyzable group or a constituent component derived from a compound bearing a hydrolyzable group having a reactive functional group.
    Type: Application
    Filed: May 30, 2023
    Publication date: September 28, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihiro NAKAI, Kazushi FURUKAWA
  • Publication number: 20230203353
    Abstract: An object of the present invention to provide an adhesive for an endoscope and a cured product of the adhesive, and an endoscope and a method for producing the endoscope. The adhesive is able to maintain sufficient adhesive strength even when exposed to high temperature for a long time in a state of being used for fixation of a member or subjected to powerful sterilization treatment with ozone water or the like and is suitable for use in fixing a member constituting the endoscope. The adhesive for an endoscope includes an epoxy resin, an epoxy resin curing component, and a radical scavenger.
    Type: Application
    Filed: February 15, 2023
    Publication date: June 29, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Kazushi FURUKAWA, Yoshihiro NAKAI
  • Publication number: 20230157720
    Abstract: An endoscopic flexible tube including a flexible-tube base containing metal as a constituent material, and a cover layer covering an outer periphery of the flexible-tube base, wherein the cover layer includes a polyester having a naphthalene structure and a component having an action of inhibiting a reaction of an active species such as a radical, an endoscopic medical apparatus including the endoscopic flexible tube, and a covering material for the endoscopic flexible-tube base.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 25, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Kazushi FURUKAWA, Yoshihiro NAKAI
  • Publication number: 20230135925
    Abstract: Provided are a flexible tube for an endoscope, the flexible tube having a flexible-tube base containing metal as a constituent material, a cover layer covering an outer periphery of the flexible-tube base, and a primer layer disposed between the flexible-tube base and the cover layer and including at least one of a specific silane coupling agent, an aluminum alkoxide compound, a zirconium alkoxide compound, or a titanium alkoxide compound, in which the cover layer includes, at least on a side in contact with the primer layer, a polyester having a naphthalene structure, an endoscopic medical device using the flexible tube, a method for producing the flexible tube for an endoscope, and a method for producing the endoscopic medical device.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 4, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihiro NAKAI, Kazushi FURUKAWA
  • Publication number: 20230136764
    Abstract: An endoscopic flexible tube including a sleeve-shaped flexible-tube base having flexibility, and a cover layer for the flexible-tube base, wherein the cover layer contains (a) at least one of (a1) a polyester resin having a naphthalene structure or (a2) a polyester elastomer having a naphthalene structure, and (b) at least one of (b1) a thermoplastic resin not having a naphthalene structure or (b2) a thermoplastic elastomer not having a naphthalene structure, and, in the cover layer, a ratio of the component (a) to a total amount of the components (a) and (b) is more than 50 mass % and less than 90 mass %; an endoscopic medical apparatus including the endoscopic flexible tube; and a covering material for the endoscopic-flexible-tube base.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 4, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Kazushi FURUKAWA, Yoshihiro Nakai
  • Publication number: 20230139268
    Abstract: Provided are a flexible tube for an endoscope, the flexible tube having a sleeve-shaped flexible-tube base having flexibility and a cover layer covering an outer periphery of the flexible-tube base, in which the cover layer includes a chain-extended product of a polyester having a naphthalene structure, and the chain-extended product includes a constituent component derived from at least one chain extender selected from the group consisting of (A) an epoxy compound, (B) an isocyanate compound, (C) an amine compound, (D) an oxazoline compound, (E) a carbodiimide compound having a molecular weight of less than 3,000, and (F) a carboxylic anhydride and a constituent component derived from a polyester having a naphthalene structure, an endoscopic medical device using the flexible tube, a method for producing the flexible tube for an endoscope, and a method for producing the endoscopic medical device.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 4, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihiro NAKAI, Kazushi Furukawa
  • Publication number: 20230133400
    Abstract: Provided are a flexible tube for an endoscope, the flexible tube having a flexible-tube base that is flexible and tubular and a polyester elastomer layer that covers the flexible-tube base and has a naphthalene structure in a soft segment, an endoscopic medical device having the flexible tube for an endoscope, a method for producing a covering material constituting the flexible tube for an endoscope, and a method for producing the flexible tube for an endoscope.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 4, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihiro NAKAI, Kazushi FURUKAWA
  • Publication number: 20230124828
    Abstract: Electrical bonded portions (100, 104) from a coaxial cable (56) to a piezoelectric body (49) are bonded by a resin material having conductivity (102), and the electrical bonded portions (100, 104) using the resin material (102) are covered with a gas barrier epoxy resin layer (106).
    Type: Application
    Filed: December 21, 2022
    Publication date: April 20, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Yasuhiko MORIMOTO, Katsuya Yamamoto, Kazushi Furukawa
  • Patent number: 11540702
    Abstract: Provided is a flexible tube, for an endoscope, having a flexible tube substrate, for an endoscope, that is flexible and tubular and a resin layer covering the flexible tube substrate for an endoscope. The resin layer includes one or more layers, the layers including a layer A including a polyester elastomer (a) as a resin component, a hindered amine compound (b), and a particular compound (c). Also provided are an endoscopic medical device including the flexible tube for an endoscope and a resin composition and a set of resin compositions that are suitable for forming the resin layer of the flexible tube for an endoscope.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: January 3, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Kazushi Furukawa, Yoshihiro Nakai
  • Patent number: 11490789
    Abstract: Provided are an adhesive for an endoscope, a cured product thereof, an endoscope produced using the adhesive for an endoscope, and a method for producing the endoscope. The adhesive for an endoscope is a two-component adhesive for an endoscope. The two-component adhesive has a base and a curing agent. The base includes at least one epoxy resin (A) selected from the group consisting of bisphenol A epoxy resins, bisphenol F epoxy resins, and phenol novolac epoxy resins. The curing agent includes at least one specific polyamine compound (B). The adhesive for an endoscope is used to fix at least one of a metal member or a glass member constituting the endoscope.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: November 8, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Kazushi Furukawa, Toshihide Yoshitani, Yoshihiro Nakai
  • Publication number: 20220315814
    Abstract: An adhesive for an endoscope, the adhesive including (A) an epoxy resin including at least one epoxy resin of a bisphenol A epoxy resin, a bisphenol F epoxy resin, or a phenol novolac epoxy resin, (B) a curing component including at least one of a phosphorus-containing compound, a polythiol compound, a dicyandiamide compound, a phenol compound, or a polyether-polyamine compound, and (C) an inorganic amphoteric ion exchanger; and a cured product of the adhesive. An endoscope including the cured product fixed, and a method for producing the endoscope.
    Type: Application
    Filed: June 14, 2022
    Publication date: October 6, 2022
    Applicant: FUJIFILM Corporation
    Inventors: Kazushi Furukawa, Yoshihiro Nakai, Shigeki Uehira
  • Publication number: 20210380853
    Abstract: Provided are an adhesive for an endoscope, a cured product thereof, an endoscope including a member secured with the cured product, and a method for manufacturing the endoscope. The adhesive includes the following (a) to (c): (a) an epoxy resin including at least one of a bisphenol A epoxy resin, a bisphenol F epoxy resin, or a phenol novolac epoxy resin; (b) a polyamine compound having an oxygen atom but no amide bond in a molecule thereof; and (c) at least one of an inorganic filler, an amide compound, a fatty acid wax, or a sorbitol compound.
    Type: Application
    Filed: August 17, 2021
    Publication date: December 9, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihiro NAKAI, Kazushi Furukawa
  • Publication number: 20210380834
    Abstract: Provided are an adhesive for an endoscope, a cured product thereof, an endoscope including a member secured with the cured product, and a method for manufacturing the endoscope. The adhesive includes the following (a) to (c): (a) an epoxy resin including at least one of a bisphenol A epoxy resin, a bisphenol F epoxy resin, or a phenol novolac epoxy resin; (b) a polyamine compound having an oxygen atom but no amide bond in a molecule thereof; and (c) a metal alkoxide compound.
    Type: Application
    Filed: August 17, 2021
    Publication date: December 9, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihiro NAKAI, Kazushi FURUKAWA
  • Publication number: 20210371715
    Abstract: An adhesive for an endoscope, the adhesive including an epoxy resin including at least one of bisphenol A epoxy resin, bisphenol F epoxy resin, or phenol novolac epoxy resin, a curing component, and an acidic curing acceleration component; a cured product of the adhesive; an endoscope including the cured product fixed; and a method for producing the endoscope.
    Type: Application
    Filed: August 17, 2021
    Publication date: December 2, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Kazushi FURUKAWA, Yoshihiro Nakai
  • Publication number: 20210371714
    Abstract: An adhesive for an endoscope, the adhesive including an epoxy resin including at least one of bisphenol A epoxy resin, bisphenol F epoxy resin, or phenol novolac epoxy resin, a curing component, and a rubber component; a cured product of the adhesive; an endoscope including the cured product fixed; and a method for producing the endoscope. Note that adhesives in which the rubber component is acrylic rubber are excluded.
    Type: Application
    Filed: August 17, 2021
    Publication date: December 2, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Kazushi FURUKAWA, Yoshihiro Nakai
  • Publication number: 20210189203
    Abstract: Provided are an adhesive for an endoscope and a cured product thereof. The adhesive for an endoscope includes an epoxy resin including at least one of a bisphenol A epoxy resin, a bisphenol F epoxy resin, or a phenol novolac epoxy resin, a polyamine compound, and an alcohol compound. Also provided are an endoscope in which the cured product is fixed and a method for producing the endoscope.
    Type: Application
    Filed: January 8, 2021
    Publication date: June 24, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Kazushi FURUKAWA, Yoshihiro NAKAI
  • Publication number: 20210106210
    Abstract: Provided are an adhesive for an endoscope, a cured product of the adhesive for an endoscope, an endoscope produced using the adhesive for an endoscope, and a method for producing an endoscope. The adhesive for an endoscope includes at least one epoxy resin (A) selected from the group consisting of bisphenol A epoxy resins, bisphenol F epoxy resins, and phenol novolac epoxy resins, a polyamine compound (B), and a specific compound (C) having an epoxy group.
    Type: Application
    Filed: December 3, 2020
    Publication date: April 15, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihiro NAKAI, Kazushi FURUKAWA