Patents by Inventor Kenji URUMA

Kenji URUMA 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).

  • Ni—Ti-based alloy material, method for producing Ni—Ti-based alloy material, and wire or tube including Ni—Ti-based alloy material
    Patent number: 12065719
    Abstract: A Ni—Ti-based alloy material includes a matrix phase consisting essentially of a Ni—Ti-based alloy and having a B2 type crystal structure. A nonmetallic inclusion is present in the matrix phase, in which 99% by mass or more of the nonmetallic inclusion is a TiC-based inclusion having a NaCl type crystal structure, the TiC-based inclusion has a lattice misfit (?) in a range of 0.4238 or more and 0.4259 or less. The lattice misfit (?) is represented by Expression ?=(a1?a2)/a2, where a1 is a lattice constant (?) of the TiC-based inclusion and a2 is a lattice constant (?) of the matrix phase.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: August 20, 2024
    Assignees: FURUKAWA TECHNO MATERIAL CO., LTD., FURUKAWA ELECTRIC CO., LTD.
    Inventors: Fumiyoshi Yamashita, Sumio Kise, Kenji Uruma
  • Formed body of Cu—Al—Mn-based shape-memory alloy and method for producing same
    Patent number: 11953047
    Abstract: A formed body of Cu—Al—Mn-based shape-memory alloy may include a screw portion, wherein the screw portion is a form-rolled portion. A method for producing a formed body of Cu—Al—Mn-based shape-memory alloy may involve forming a screw portion having superelasticity by plastically working at least a portion of a material for the formed body with form-rolling in a state that a crystal structure is an A2-type structure and then, subjecting heat-treatment so as to convert the A2-type crystal structure into an L21-type crystal structure. The screw portion can be formed with good working property, and has excellent fatigue resistance and breaking resistance.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: April 9, 2024
    Assignee: FURUKAWA TECHNO MATERIAL CO., LTD.
    Inventors: Sumio Kise, Toyonobu Tanaka, Kenji Uruma, Kouji Ishikawa, Nanami Kataoka, Shigekazu Yokoyama, Toyohiko Higashida, Yoshitaka Azuma
  • Ni-Ti-BASED ALLOY MATERIAL, METHOD FOR PRODUCING Ni-Ti-BASED ALLOY MATERIAL, AND WIRE OR TUBE INCLUDING Ni-Ti-BASED ALLOY MATERIAL
    Publication number: 20220220581
    Abstract: A Ni—Ti-based alloy material includes a matrix phase consisting essentially of a Ni—Ti-based alloy and having a B2 type crystal structure. A nonmetallic inclusion is present in the matrix phase, in which 99% by mass or more of the nonmetallic inclusion is a TiC-based inclusion having a NaCl type crystal structure, the TiC-based inclusion has a lattice misfit (?) in a range of 0.4238 or more and 0.4259 or less. The lattice misfit (?) is represented by Expression ?=(a1?a2)/a2, where a1 is a lattice constant (?) of the TiC-based inclusion and a2 is a lattice constant (?) of the matrix phase.
    Type: Application
    Filed: April 30, 2020
    Publication date: July 14, 2022
    Applicants: FURUKAWA TECHNO MATERIAL CO., LTD., FURUKAWA ELECTRIC CO., LTD.
    Inventors: Fumiyoshi YAMASHITA, Sumio KISE, Kenji URUMA
  • FORMED BODY OF Cu-Al-Mn-BASED SHAPE-MEMORY ALLOY AND METHOD FOR PRODUCING SAME
    Publication number: 20220120308
    Abstract: A formed body of Cu—Al—Mn-based shape-memory alloy may include a screw portion, wherein the screw portion is a form-rolled portion. A method for producing a formed body of Cu—Al—Mn-based shape-memory alloy may involve forming a screw portion having superelasticity by plastically working at least a portion of a material for the formed body with form-rolling in a state that a crystal structure is an A2-type structure and then, subjecting heat-treatment so as to convert the A2-type crystal structure into an L21-type crystal structure. The screw portion can be formed with good working property, and has excellent fatigue resistance and breaking resistance.
    Type: Application
    Filed: January 27, 2020
    Publication date: April 21, 2022
    Applicant: FURUKAWA TECHNO MATERIAL CO., LTD.
    Inventors: Sumio KISE, Toyonobu TANAKA, Kenji URUMA, Kouji ISHIKAWA, Nanami KATAOKA, Shigekazu YOKOYAMA, Toyohiko HIGASHIDA, Yoshitaka AZUMA