Patents by Inventor Hiroyuki Yasunaka

Hiroyuki Yasunaka 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).

  • Nb3Sn superconducting wire and precursor for the same
    Publication number: 20070163675
    Abstract: A precursor for manufacturing a Nb3Sn superconducting wire by bronze method, in which plural Nb or Nb-based alloy cores are buried in a Cu—Sn-based alloy base material. The Cu—Sn-based alloy base material comprises Ti and/or Zr in addition to Sn, and these components satisfy the equations (1) and (2) below: 0.4?(X?15.6)/Y?1.9??(1) and 15.6<X?19 ??(2) where the symbol X denotes the content of Sn in mass % and the symbol Y denotes the total content of Ti and Zr in mass %.
    Type: Application
    Filed: November 7, 2006
    Publication date: July 19, 2007
    Inventors: Takashi Hase, Yukinobu Murakami, Hiroyuki Yasunaka, Takayoshi Miyazaki, Hiroyuki Kato, Kyoji Zaitsu