Patents by Inventor Ichiro Nagao

Ichiro Nagao 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).

  • Method for producing &bgr;-titanium alloy wire
    Patent number: 6800153
    Abstract: The diamter of &bgr;-titanium alloy wire is reduced by cold wire-drawing and the &bgr;-titanium alloy wire is subjected to heat treatment. The heat treatment comprises the first aging process for precipitation strengthening and the second aging process for removing processing strain. &bgr;-titanium alloy wire is heat-treated under the supply of tension at the second aging process.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: October 5, 2004
    Assignees: Terumo Corporation, Tokusen Kogyo Co., Ltd.
    Inventors: Naoki Ishii, Takashi Kaneko, Shin Sumimoto, Hideki Yamamoto, Ichiro Nagao
  • Method for producing beta-titanium alloy wire
    Publication number: 20020174922
    Abstract: The diamter of &bgr;-titanium alloy wire is reduced by cold wire-drawing and the &bgr;-titanium alloy wire is subjected to heat treatment. The heat treatment comprises the first aging process for precipitation strengthening and the second aging process for removing processing strain. &bgr;-titanium alloy wire is heat-treated under the supply of tension at the second aging process.
    Type: Application
    Filed: April 11, 2002
    Publication date: November 28, 2002
    Applicant: Terumo Corporation
    Inventors: Naoki Ishii, Takashi Kaneko, Shin Sumimoto, Hideki Yamamoto, Ichiro Nagao
  • &bgr;-titanium alloy wire, method for its production and medical instruments made by said &bgr;-titanium alloy wire
    Patent number: 6402859
    Abstract: The diamter of &bgr;-titanium alloy wire is reduced by cold wire-drawing and the &bgr;-titanium alloy wire is subjected to heat treatment. The heat treatment comprises the first aging process for precipitation strengthening and the second aging process for removing processing strain. &bgr;-titanium alloy wire is heat-treated under the supply of tension at the second aging process.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: June 11, 2002
    Assignee: Terumo Corporation
    Inventors: Naoki Ishii, Takashi Kaneko, Shin Sumimoto, Hideki Yamamoto, Ichiro Nagao
  • High-strength extra fine metal wire
    Patent number: 5261974
    Abstract: A high-strength extra fine metal wire of a diameter of 0.01-0.50 mm containing 0.60 wt %-1.20 wt % carbon, consisting of a metal structure in the form of bundle of said carbides and presenting a shape about rectangular or circular in which the ratio of the length in the longitudinal direction to the length in the direction of width in the cross section is no more than 2.5 and the mean sectional area is no more than 150.times.10.sup.-4 .mu.m.sup.2, and improving strength and tenacity by having a tensile strength of 300 kgf/mm.sup.2 or over.
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: November 16, 1993
    Assignee: Tokusen Kogyo Company Limited
    Inventors: Kenji Hyodo, Ichiro Nagao