Patents by Inventor Katsuaki Yuasa

Katsuaki Yuasa 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: 10407552
    Abstract: A press-molded product includes: carbon fibers having a weight average fiber length of 1 mm or more; a polyamide-based resin (X); and a polyarylene ether-based resin (Y). The carbon fibers include carbon fiber bundles. The polyamide-based resin (X) and the polyarylene ether-based resin (Y) form a sea-island structure inside and outside the carbon fiber bundles. In the sea-island structure, one of the polyamide-based resin (X) and the polyarylene ether-based resin (Y) forms a sea phase and the other forms an island phase having a particle diameter Dr of 0.05 ?m or more and less than 50 ?m.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: September 10, 2019
    Assignee: Teijin Limited
    Inventors: Akihisa Nomura, Katsuaki Yuasa, Guofei Hua
  • Publication number: 20180134856
    Abstract: A press-molded product includes: carbon fibers having a weight average fiber length of 1 mm or more; a polyamide-based resin (X); and a polyarylene ether-based resin (Y). The carbon fibers include carbon fiber bundles. The polyamide-based resin (X) and the polyarylene ether-based resin (Y) form a sea-island structure inside and outside the carbon fiber bundles. In the sea-island structure, one of the polyamide-based resin (X) and the polyarylene ether-based resin (Y) forms a sea phase and the other forms an island phase having a particle diameter Dr of 0.05 ?m or more and less than 50 ?m.
    Type: Application
    Filed: August 2, 2016
    Publication date: May 17, 2018
    Applicant: Teijin Limited
    Inventors: Akihisa Nomura, Katsuaki Yuasa, Guofei Hua
  • Patent number: 9783646
    Abstract: A molding material for injection molding, extrusion molding or pultrusion molding, which contains carbon fibers having a fiber length of 2 mm or more and a thermoplastic resin, wherein (1) the molding material is a solid having a plane A1 and one or more other face Bi, one or more cross sections of the carbon fibers are observed in at least one face Bi, and the number of the cross sections of the carbon fibers per unit area observed in the face Bi is twice or more the number of the cross sections of the carbon fibers per unit area observed in the plane A1, and (2) a ratio of fibers in which 50% or more of an outer peripheral surface of each carbon fiber is coated with the thermoplastic resin is from 80 to 100% to total carbon fibers.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: October 10, 2017
    Assignee: Teijin Limited
    Inventors: Kaori Miura, Katsuaki Yuasa
  • Publication number: 20160185922
    Abstract: A molding material for injection molding, extrusion molding or pultrusion molding, which contains carbon fibers having a fiber length of 2 mm or more and a thermoplastic resin, wherein (1) the molding material is a solid having a plane A1 and one or more other face Bi, one or more cross sections of the carbon fibers are observed in at least one face Bi, and the number of the cross sections of the carbon fibers per unit area observed in the face Bi is twice or more the number of the cross sections of the carbon fibers per unit area observed in the plane A1, and (2) a ratio of fibers in which 50% or more of an outer peripheral surface of each carbon fiber is coated with the thermoplastic resin is from 80 to 100% to total carbon fibers.
    Type: Application
    Filed: January 19, 2015
    Publication date: June 30, 2016
    Applicant: Teijin Limited
    Inventors: Kaori Miura, Katsuaki Yuasa