Patents by Inventor Lea Peng Tan

Lea Peng Tan 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).

  • High coercivity chp structural Co-based aloy longitudinal recording media and method for its fabrication
    Publication number: 20020098389
    Abstract: The present invention provides improved magnetic recording media comprising a substrate, a non-magnetic underlayer, and a cobalt alloy based magnetic layer in a hexagonal closely-packed structure. An optional thin magnetic or non-magnetic intermediate layer is disposed between the magnetic layer and the substrate. The multilayer thin films of this invention are subjected to heat treatment after deposition. The multilayer films of this invention provide significant improvement in magnetic properties for longitudinal magnetic recording.
    Type: Application
    Filed: March 3, 2000
    Publication date: July 25, 2002
    Inventors: Jian Ping Wang, Lea Peng Tan, Ming Lang Yan, Tow Chong Chong
  • Defect analysis in magnetic thin films
    Patent number: 6201390
    Abstract: A method of analyzing defects in a magnetic thin film is provided. A magnetic field is applied to the magnetic thin film. The magnetization of the magnetic thin film is measured over a range of different field strengths. A value representative of a magnetic hardness coefficient is calculated for the magnetic thin film from the magnetizations measured. The calculated value is compared with a reference value. Defect information is determined in dependence upon the comparison made.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: March 13, 2001
    Assignee: Data Storage Institute
    Inventors: Jian-Ping Wang, Lea Peng Tan, Thomas Yun Fook Liew