Patents by Inventor Satoshi Tsukuda

Satoshi Tsukuda 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).

  • Ceramic nanowires and a process for producing them by ion beam irradiation
    Patent number: 7731927
    Abstract: A method by which ceramic nanowires with diameters ranging from several to several tens of nanometers can be synthesized with improvements in the shape retention of the nanowires and the yield of conversion to ceramic, which method comprises the steps of forming a thin film of a silicon-containing polymer usable as a ceramic precursor, irradiating the thin film with ion beams to form cylindrical crosslinked portions, extracting the un-crosslinked portions with a solvent to produce nanowires of the silicon-containing polymer, irradiating the nanowires with an ionizing radiation so that they are crosslinked again, and firing the re-crosslinked nanowires.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: June 8, 2010
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Masaki Sugimoto, Masahito Yoshikawa, Shuhei Seki, Satoshi Tsukuda, Seiichi Tagawa
  • CERAMIC NANOWIRES AND A PROCESS FOR PRODUCING THEM BY ION BEAM IRRADIATION
    Publication number: 20100111805
    Abstract: A method by which ceramic nanowires with diameters ranging from several to several tens of nanometers can be synthesized with improvements in the shape retention of the nanowires and the yield of conversion to ceramic, which method comprises the steps of forming a thin film of a silicon-containing polymer usable as a ceramic precursor, irradiating the thin film with ion beams to form cylindrical crosslinked portions, extracting the un-crosslinked portions with a solvent to produce nanowires of the silicon-containing polymer, irradiating the nanowires with an ionizing radiation so that they are crosslinked again, and firing the re-crosslinked nanowires.
    Type: Application
    Filed: September 14, 2006
    Publication date: May 6, 2010
    Applicant: Japan Atomic Energy Agency
    Inventors: Masaki Sugimoto, Masahito Yoshikawa, Shuhei Seki, Satoshi Tsukuda, Seiichi Tagawa