Patents by Inventor Daisuki Maeda

Daisuki Maeda 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).

  • HIGH-STRENGTH STEEL SHEET EXHIBITING EXCELLENT STRETCH-FLANGE FORMABILITY AND BENDING WORKABILITY, AND METHOD OF PRODUCING MOLTEN STEEL FOR THE HIGH-STRENGTH STEEL SHEET
    Publication number: 20130142688
    Abstract: The present invention provides a high-strength steel sheet including: C: 0.03 to 0.25 mass %, Si: 0.1 to 2.0 mass %, Mn: 0.5 to 3.0 mass %, P: not more than 0.05 mass %, T.O: not more than 0.0050 mass %, S: 0.0001 to 0.01 mass %, N: 0.0005 to 0.01 mass %, acid-soluble Al: more than 0.01 mass %, Ca: 0.0005 to 0.0050 mass %, and a total of at least one element of Ce, La, Nd, and Pr: 0.001 to 0.01 mass %, with a balance including iron and inevitable impurities, in which the steel sheet contains a chemical component on a basis of mass that satisfies 0.7<100×([Ce]+[La]+[Nd]+[Pr])/[acid-soluble Al]?70 and 0.
    Type: Application
    Filed: February 23, 2012
    Publication date: June 6, 2013
    Inventors: Kenichi Yamamoto, Hideaki Yamamura, Yuzo Takahashi, Osamu Kawano, Kohsuke Kume, Junji Haji, Daisuki Maeda, Yoshihiro Suwa