Patents by Inventor Sang Yon Lee

Sang Yon Lee 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 for synchronizing reverse link and transmission method using synchronous reverse link
    Patent number: 6516007
    Abstract: A transmission method using synchronous reverse links establishes synchronization by controlling transmission times of mobile stations according to synchronization control messages received through a control channel and then controlling the transmission times according to synchronization control bits received through a traffic channel.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: February 4, 2003
    Assignee: SK Telecom Co., Ltd.
    Inventors: Een Kee Hong, Dong Do Lee, Jun Mo Koo, Sang Yon Lee, Sung Jae Lee
  • Process for preparing a composite inorganic membrane for hydrogen separation
    Patent number: 5782959
    Abstract: The present invention relates to a process for preparing a composite inorganic membrane for hydrogen separation, more specifically, to a process for preparing a composite inorganic membrane for hydrogen separation which comprises formation of intermediate layer in an asymmetric porous alumina support by sol-gel method, and modification of pores of the alumina membrane by soaking palladium acetate solution into the pores and vapor-deposition to enhance the permeability and selectivity for hydrogen.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: July 21, 1998
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Seung-Man Yang, Seung-Bin Park, Seung-Jin Lee, Sang-Yon Lee