Patents by Inventor Katsumi Wakamatsu

Katsumi Wakamatsu 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).

  • MAGNESIUM BASE ALLOY PIPES AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20090032151
    Abstract: A magnesium base alloy pipe having high strength and toughness is provided along with a method of manufacturing such pipes. A magnesium base alloy pipe, wherein the pipe is produced by drawing a pipe blank of a magnesium base alloy comprising containing either of the following ingredients (1) or (2): (1) about 0.1-12.0 mass % of Al; or (2) about 1.0-10.0 mass % of Zn and about 0.1-2.0 mass % of Zr. The novel alloy pipe is manufactured by a method comprising steps of providing the above-described pipe blank, pointing the pipe blank, and drawing the pointed pipe blank. The drawing step is executed at a drawing temperature above approx. 50° C.
    Type: Application
    Filed: September 30, 2008
    Publication date: February 5, 2009
    Applicant: SUMITOMO (SEI) STEEL WIRE CORP.
    Inventors: Yukihiro OISHI, Nozomu Kawabe, Hitoshi Takahashi, Katsumi Wakamatsu
  • Manesium base alloy tube and method for manufacture thereof
    Publication number: 20050208324
    Abstract: A magnesium base alloy pipe having high strength and toughness is provided along with a method of manufacturing such pipes. A magnesium base alloy pipe, wherein the pipe is produced by drawing a pipe blank of a magnesium base alloy comprising containing either of the following ingredients (1) or (2): (1) about 0.1-12.0 mass % of Al; or (2) about 1.0-10.0 mass % of Zn and about 0.1-2.0 mass % of Zr. The novel alloy pipe is manufactured by a method comprising steps of providing the above-described pipe blank, pointing the pipe blank, and drawing the pointed pipe blank. The drawing step is executed at a drawing temperature above approx. 50 ° C.
    Type: Application
    Filed: March 4, 2003
    Publication date: September 22, 2005
    Inventors: Yukihiro Oishi, Nozomu Kawabe, Hitoshi Takahashi, Katsumi Wakamatsu