Patents by Inventor Younghua Chen

Younghua Chen 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).

  • Hard magnet with cap and seed layers and data storage device read/write head incorporating the same
    Patent number: 8932667
    Abstract: A method including forming a multilayer structure. The multilayer structure includes a seed layer comprising a first component selected from the group consisting of a Pt-group metal, Fe, Mn, Ir and Co. The multilayer structure also includes an intermediate layer comprising the first component and a second component selected from the group consisting of a Pt-group metal, Fe, Mn, Ir and Co. The second component is different than the first component. The multilayer structure further includes a cap layer comprising the first component. The method further includes heating the multilayer structure to an annealing temperature to cause a phase transformation of the intermediate layer. Also a hard magnet including a seed layer comprising a first component selected from the group consisting of a Pt-group metal, Fe, Mn, Ir and Co. The hard magnet also includes a cap layer comprising the first component. The hard magnet further includes an intermediate layer between the seed layer and the cap layer.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: January 13, 2015
    Assignee: Seagate Technology LLC
    Inventors: Jiaoming Qiu, Younghua Chen, Xilin Peng, Shaun McKinlay, Eric W. Singleton, Brian W. Karr