Patents by Inventor Quiqun (Kevin) Qi

Quiqun (Kevin) Qi 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: 6829160
    Abstract: A magnetic random access memory (MRAM) cell and a memory array formed from the MRAM cells are disclosed. The MRAM cell includes a magnetic tunneling junction and a transistor. The magnetic tunneling junction includes a first ferromagnetic layer, a second ferromagnetic layer and an insulating layer between the first ferromagnetic layer and the second ferromagnetic layer. The gate of the transistor is coupled to a first end of the magnetic tunneling junction. The source of the transistor is coupled to a second end the magnetic tunneling junction. The drain of the transistor is coupled with an output for reading the magnetic memory cell. During reading, a read current is applied to the magnetic tunneling junction and the transistor is preferably operated in a saturation region.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: December 7, 2004
    Assignee: Western Digital (Fremont), Inc.
    Inventors: Quiqun (Kevin) Qi, Xizeng (Stone) Shi, Matthew Gibbons