Patents by Inventor Chao-Chien Chiang

Chao-Chien Chiang 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).

  • Patent number: 8658293
    Abstract: A magnetic recording medium includes: a substrate, and a magnetic recording layer that is made from a material having the chemical formula of FexMnyPtz, and that has a bottom surface and an upper surface; wherein x, y, and z indicate average atomic concentrations for Fe, Mn, and Pt, and x+y+z is 100, x and y being greater than 0 and not greater than 65, z being in the range from 35 to 60; and wherein atomic concentration of Fe is gradually decreased from the upper surface to the bottom surface, and atomic concentration of Mn is gradually increased from the upper surface to the bottom surface so that the ferromagnetic property of the magnetic recording layer is gradually reduced from the upper surface to the bottom surface.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: February 25, 2014
    Assignee: National Tsing Hua University
    Inventors: Chih-Huang Lai, Hao-Cheng Hou, Chao-Chien Chiang
  • Publication number: 20130084469
    Abstract: A magnetic recording medium includes: a substrate, and a magnetic recording layer that is made from a material having the chemical formula of FexMnyPtz, and that has a bottom surface and an upper surface; wherein x, y, and z indicate average atomic concentrations for Fe, Mn, and Pt, and x+y+z is 100, x and y being greater than 0 and not greater than 65, z being in the range from 35 to 60; and wherein atomic concentration of Fe is gradually decreased from the upper surface to the bottom surface, and atomic concentration of Mn is gradually increased from the upper surface to the bottom surface so that the ferromagnetic property of the magnetic recording layer is gradually reduced from the upper surface to the bottom surface.
    Type: Application
    Filed: June 11, 2012
    Publication date: April 4, 2013
    Inventors: Chih-Huang LAI, Hao-Cheng Hou, Chao-Chien Chiang
  • Patent number: 7847668
    Abstract: An inductor includes: a substrate; an insulator layer; a conductive coil; and a permeability-enhancing film of a multi-layer structure. The multi-layer structure includes at least one repeating unit that has at least two layers. The two layers exhibit an exchange-coupling effect and include a first ferromagnetic layer of a first ferromagnetic material and an exchange-coupling layer.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: December 7, 2010
    Assignee: National Tsing Hua University
    Inventors: Chih-Huang Lai, Ruo-Fan Jiang, Nazmun Nahar Shams, Chao-Chien Chiang
  • Publication number: 20090009278
    Abstract: An inductor includes: a substrate; an insulator layer; a conductive coil; and a permeability-enhancing film of a multi-layer structure. The multi-layer structure includes at least one repeating unit that has at least two layers. The two layers exhibit an exchange-coupling effect and include a first ferromagnetic layer of a first ferromagnetic material and an exchange-coupling layer.
    Type: Application
    Filed: January 4, 2008
    Publication date: January 8, 2009
    Applicant: NATIONAL TSING HUA UNIVERISTY
    Inventors: Chih-Huang Lai, Ruo-Fan Jiang, Nazmun Nahar Shams, Chao-Chien Chiang