Patents by Inventor Kea-Tiong Tang

Kea-Tiong Tang 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 apparatus to provide safety checks for neural stimulation
    Publication number: 20070255319
    Abstract: In electrically stimulating neural tissue it is important to prevent over stimulation and unbalanced stimulation which would cause damage to the neural tissue, the electrode, or both. It is critical that neural tissue in not subjected to any direct current or alternating current above a safe threshold. Further, it is important to identify defective electrodes as continued use may result in neural and further electrode damage. The present invention presents system and stimulator control mechanisms to prevent damage to neural tissue.
    Type: Application
    Filed: April 28, 2006
    Publication date: November 1, 2007
    Inventors: Robert Greenberg, Kelly McClure, James Little, Rongqing Dai, Arup Roy, Richard Castro, John Reinhold, Kea-Tiong Tang, Sumit Yadav, Chunhong Zhou, Dao Zhou, Pishoy Maksy
  • Floating gate digital-to-analog converter
    Publication number: 20070194966
    Abstract: The present invention provides a DAC constructed from a series of floating gate devices which are programmable to a series of predetermined values. Addressing one or more of the programmed floating gate devices will select from a wide variety of analog outputs. Reprogramming the floating gate devices, can provide a different variety of analog outputs. For example, the floating gate devices can be preprogrammed to a different range of outputs matching a range of perceptible signals.
    Type: Application
    Filed: April 12, 2007
    Publication date: August 23, 2007
    Inventors: Rongqing Dai, James Little, Kea-Tiong Tang
  • Floating gate digital-to-analog converter
    Patent number: 7224300
    Abstract: The present invention provides a DAC constructed from a series of floating gate devices which are programmable to a series of predetermined values. Addressing one or more of the programmed floating gate devices, will select from a wide variety of analog outputs. Reprogramming the floating gate devices, can provide a different variety of analog outputs. For example, the floating gate devices can be preprogrammed to a different range of outputs matching a range of perceptible signals.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: May 29, 2007
    Assignee: Second Sight Medical Products, Inc.
    Inventors: Rongqing Dai, James S. Little, Kea-Tiong Tang
  • Floating gate digital-to-analog converter
    Patent number: 7224301
    Abstract: The present invention provides a DAC constructed from a series of floating gate devices which are programmable to a series of predetermined values. Addressing one or more of the programmed floating gate devices, will select from a wide variety of analog outputs. Reprogramming the floating gate devices, can provide a different variety of analog outputs. For example, the floating gate devices can be preprogrammed to a different range of outputs matching a range of perceptible signals.
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: May 29, 2007
    Assignee: Second Sight Medical Products, Inc.
    Inventors: Rongqing Dai, James S. Little, Kea-Tiong Tang