Patents by Inventor Gu Chang Han

Gu Chang Han 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: 20050174821
    Abstract: A multi-state magnetoresistive random access memory unit (MRAM) having a plurality of memory cells, each of the cells are written to and read from, independently of other cells. The plurality of memory cells comprises a recording layer as a pinned magnetic layer and a read layer as an unpinned layer. The unpinned layer has a higher Curie point than the pinned layer. The pinned layer in an individual cell is heated to near its Curie point and a bit line current and a word line current is used to align the magnetization vector of the recording layer at a plurality of angles relative to the magnetization vector of the read layer.
    Type: Application
    Filed: March 7, 2003
    Publication date: August 11, 2005
    Inventors: YuanKai Zheng, Yihong Wu, Zai Guo, Jin Jun Qiu, Ke Bin Li, Gu Chang Han