Patents by Inventor Takeshi Urabe

Takeshi Urabe 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 TENSILE STRENGTH STEEL AND MARINE STRUCTURE HAVING EXCELLENT WELD TOUGHNESS
    Publication number: 20100226813
    Abstract: In order to provide a high tensile strength steel having excellent low temperature toughness and which can withstand large heat input welding, a steel comprises, in mass percent, C: 0.01-0.10%, Si: at most 0.5%, Mn: 0.8-1.8%, P: at most 0.020%, S: at most 0.01%, Cu: 0.8-1.5%, Ni: 0.2-1.5%, Al: 0.001-0.05%, N: 0.0030-0.0080%, O: 0.0005-0.0035%, if necessary at least one of Ti: 0.005-0.03%, Nb: 0.003-0.03%, and Mo: 0.1-0.8%, and a remainder of Fe and impurities, and the N/Al ratio is 0.3-3.0.
    Type: Application
    Filed: September 11, 2009
    Publication date: September 9, 2010
    Inventors: Takahiro Kamo, Takeshi Urabe, Hirofumi Nakamura, Kazushi Ohnishi, Masahiko Hamada
  • High tensile strength steel and marine structure having excellent weld toughness
    Publication number: 20070051433
    Abstract: In order to provide a high tensile strength steel having excellent low temperature toughness and which can withstand large heat input welding, a steel comprises, in mass percent, C: 0.01-0.10%, Si: at most 0.5%, Mn: 0.8-1.8%, P: at most 0.020%, S: at most 0.01%, Cu: 0.8-1.5%, Ni: 0.2-1.5%, Al: 0.001-0.05%, N: 0.0030-0.0080%, O: 0.0005-0.0035%, if necessary at least one of Ti: 0.005-0.03%, Nb: 0.003-0.03%, and Mo: 0.1-0.8%, and a remainder of Fe and impurities, and the N/Al ratio is 0.3-3.0.
    Type: Application
    Filed: May 26, 2006
    Publication date: March 8, 2007
    Inventors: Takahiro Kamo, Takeshi Urabe, Hirofumi Nakamura, Kazushi Ohnishi, Masahiko Hamada