Patents by Inventor Toru Ienari

Toru Ienari 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).

  • Laser-welded shaped steel and method for producing same
    Patent number: 10603746
    Abstract: A laser-welded shape section steel includes a web member and a flange member each made of a steel plate, the steel plate having an equivalent carbon content Ceql of not less than 0.075 and not more than 0.15, the equivalent carbon content Ceql being represented by the following formula: Ceql=C+(Si/50)+(Mn/25)+(P/2)+(Cr/25)+Ti, where a welded part, which is a joint part in which the web member and the flange member are joined, has a hardness of not less than 1.2 times and not more than 4 times as hard as that of the steel plate, and the welded part a protrusion length of not greater than 1 mm.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: March 31, 2020
    Assignee: NIPPON STEEL NISSHIN CO., LTD.
    Inventors: Toru Ienari, Yasuhiro Sakurada, Hiroshi Asada
  • LASER-WELDED SHAPED STEEL AND METHOD FOR PRODUCING SAME
    Publication number: 20190084086
    Abstract: A laser-welded shape section steel includes a web member and a flange member each made of a steel plate, the steel plate having an equivalent carbon content Ceql of not less than 0.075 and not more than 0.15, the equivalent carbon content Ceql being represented by the following formula: Ceql=C+(Si/50)+(Mn/25)+(P/2)+(Cr/25)+Ti, where a welded part, which is a joint part in which the web member and the flange member are joined, has a hardness of not less than 1.2 times and not more than 4 times as hard as that of the steel plate, and the welded part a protrusion length of not greater than 1 mm.
    Type: Application
    Filed: September 9, 2016
    Publication date: March 21, 2019
    Inventors: Toru Ienari, Yasuhiro Sakurada, Hiroshi Asada