Patents by Inventor Lietai Yang

Lietai Yang 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).

  • Apparatus For Measuring Electrochemical Corrosion
    Publication number: 20080217172
    Abstract: Disclosed herein is an electrochemical corrosion sensor. The sensor may include an array of electrodes wherein each electrode may include a diamond like carbon coating disposed on at least a portion of the electrodes. The coating thickness may be at least about 1 micron. The electrodes may therefore provide relatively more accurate determination of electrode corrosion rates that may be more consistent with coupon type gravimetric testing.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Applicant: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Kuang-Tsan Kenneth CHIANG, Lietai YANG
  • Method for measuring localized corrosion rate with a multi-electrode array sensor
    Patent number: 7309414
    Abstract: A method of measuring localized corrosion, using a multi-electrode array sensor. The method eliminates the effect of internal current in corroded electrodes, and thus provides a more accurate corrosion measurement. In one embodiment, the potential of a common node of the sensor is adjusted so that the sensor's most cathodic current is close to zero.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: December 18, 2007
    Assignee: Southwest Research Institute
    Inventor: Lietai Yang
  • Sensor array for electrochemical corrosion monitoring
    Patent number: 6987396
    Abstract: A sensor array for measuring localized corrosion based on electrochemical reactions is disclosed. The sensor has an array of electrodes that are made from the material of interest. The electrodes are electrically insulated from each other and arranged so that a small area of the electrode contacts a corrosive environment. The voltage outputs across the electrodes connected to the electrodes are measured and used as the signals to indicate localized corrosion.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: January 17, 2006
    Assignee: Southwest Research Institute
    Inventors: Lietai Yang, Narasi Sridhar
  • Method for measuring localized corrosion rate with a multi-electrode array sensor
    Publication number: 20050274628
    Abstract: A method of measuring localized corrosion, using a multi-electrode array sensor. The method eliminates the effect of internal current in corroded electrodes, and thus provides a more accurate corrosion measurement. In one embodiment, the potential of a common node of the sensor is adjusted so that the sensor's most cathodic current is close to zero.
    Type: Application
    Filed: April 8, 2005
    Publication date: December 15, 2005
    Inventor: Lietai Yang
  • Sensor array for elctrochemical corrosion monitoring
    Publication number: 20040155670
    Abstract: A sensor array for measuring localized corrosion based on electrochemical reactions is disclosed. The sensor has an array of electrodes that are made from the material of interest. The electrodes are electrically insulated from each other and arranged so that a small area of the electrode contacts a corrosive environment. The voltage outputs across the electrodes connected to the electrodes are measured and used as the signals to indicate localized corrosion.
    Type: Application
    Filed: January 26, 2004
    Publication date: August 12, 2004
    Inventors: Lietai Yang, Narasi Sridhar
  • Sensor array for electrochemical corrosion monitoring
    Patent number: 6683463
    Abstract: A sensor array for measuring localized corrosion based on electrochemical reactions is disclosed. The sensor has an array of electrodes that are made from the material of interest. The electrodes are electrically insulated from each other and arranged so that a small area of the electrode contacts a corrosive environment. The voltage outputs across the electrodes connected to the electrodes are measured and used as the signals to indicate localized corrosion.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: January 27, 2004
    Assignee: Southwest Research Institute
    Inventors: Lietai Yang, Narasi Sridhar
  • Sensor array for electrochemical corrosion monitoring
    Publication number: 20020153907
    Abstract: A sensor array for measuring localized corrosion based on electrochemical reactions is disclosed. The sensor has an array of electrodes that are made from the material of interest. The electrodes are electrically insulated from each other and arranged so that a small area of the electrode contacts a corrosive environment. The voltage outputs across the electrodes connected to the electrodes are measured and used as the signals to indicate localized corrosion.
    Type: Application
    Filed: March 26, 2002
    Publication date: October 24, 2002
    Inventors: Lietai Yang, Narasi Sridhar