Patents by Inventor Yung-Chun Hsueh

Yung-Chun Hsueh 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).

  • Publication number: 20130008784
    Abstract: Provided is a CoCrPt-based alloy sputtering target containing cobalt (Co), chromium (Cr), platinum (Pt), cobalt oxide and non-magnetic oxide composition, wherein the lengths of ceramic phases of Cr2O3 and Co(Cr)—X—O formed in the sputtering targets are respectively less than 3 ?m (“X” represents the metal element of the non-magnetic oxide). The sputtering target is obtained via controlling suitable composition proportion of the prealloy powder with Cr and the sintering factor to decrease the size of ceramic phases of Cr2O3 and Co(Cr)—X—O. Sputtering targets made by the methods of the present invention decrease the arcing effects and unnecessary formation of particles upon sputtering in addition to making the components of the sputtering targets distribute more uniformly therein.
    Type: Application
    Filed: July 8, 2011
    Publication date: January 10, 2013
    Inventors: Wen-Tsang LIU, Kun-Ming Chen, Yung-Chun Hsueh, Hoa-Chia Liao