Patents by Inventor Sufen Zhao

Sufen Zhao 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).

  • MRAM based on vertical current writing and its control method
    Patent number: 7480171
    Abstract: The invention discloses a MRAM (Magnetoresistive RAM) based on vertical current writing and its control method, the operation of information writing in the MRAM unit is completed by the corporate effect of the magnetic field generated by the current parallel to the MFC unit and the other current vertical to the MFC unit and passing through this unit. The advantage of such structure is: eliminating a word line (WL) of the prior art especially for information writing, reducing the number of the metal wiring layers and the contact holes, and reducing the complexity of MRAM's structure, and difficulty and cost of manufacturing process.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: January 20, 2009
    Assignee: Institute of Physics Chinese Academy of Science
    Inventors: Zilong Peng, Xiufeng Han, Sufen Zhao, Weining Wang, Wenshan Zhan
  • Mram based on vertical current writing and its control method
    Publication number: 20070183186
    Abstract: The invention discloses a MRAM (Magnetoresistive RAM) based on vertical current writing and its control method, the operation of information writing in the MRAM unit is completed by the corporate effect of the magnetic field generated by the current parallel to the MFC unit and the other current vertical to the MFC unit and passing through this unit. The advantage of such structure is: eliminating a word line (WL) of the prior art especially for information writing, reducing the number of the metal wiring layers and the contact holes, and reducing the complexity of MRAM's structure, and difficulty and cost of manufacturing process.
    Type: Application
    Filed: December 1, 2004
    Publication date: August 9, 2007
    Applicant: INSTITUTE OF PHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Zilong Peng, Xiufeng Han, Sufen Zhao, Weining Wang, Wenshan Zhan