Patents by Inventor Amritpal Singh Rana

Amritpal Singh Rana 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).

  • Method and system for reducing assymetry in a spin valve having a synthetic pinned layer
    Patent number: 6447935
    Abstract: A method and system for providing a spin valve for use in a magnetoresistive head is disclosed. The method and system include providing a synthetic pinned layer, a nonmagnetic spacer layer, and a free layer. The free layer has a first magnetization canted from a first direction by a first angle. The nonmagnetic spacer layer is disposed between the free layer and the synthetic pinned layer. The synthetic pinned layer has a second magnetization in a second direction. The second direction is canted from a third direction that is transverse to the first direction by a second angle. The second magnetization is substantially orthogonal to the first magnetization.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: September 10, 2002
    Assignee: Read-Rite Corporation
    Inventors: Jing Zhang, Ningjia Zhu, Yiming Huai, Amritpal Singh Rana, Wenjie Chen
  • METHOD AND SYSTEM FOR REDUCING ASSYMETRY IN A SPIN VALVE HAVING A SYNTHETIC PINNED LAYER
    Publication number: 20020090533
    Abstract: A method and system for providing a spin valve for use in a magnetoresistive head is disclosed. The method and system include providing a synthetic pinned layer, a nonmagnetic spacer layer, and a free layer. The free layer has a first magnetization canted from a first direction by a first angle. The nonmagnetic spacer layer is disposed between the free layer and the synthetic pinned layer. The synthetic pinned layer has a second magnetization in a second direction. The second direction is canted from a third direction that is transverse to the first direction by a second angle. The second magnetization is substantially orthogonal to the first magnetization.
    Type: Application
    Filed: November 23, 1999
    Publication date: July 11, 2002
    Inventors: JING ZHANG, NINGJIA ZHU, YIMING HUAI, AMRITPAL SINGH RANA, WENJIE CHEN