Patents by Inventor David Trejo

David Trejo 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).

  • Determination of chloride corrosion threshold for metals embedded in cementitious material
    Patent number: 6646427
    Abstract: The chloride corrosion threshold of a metal embedded in a cementitious structure is determined in an accelerated manner by using an electric field to increase the rate of migration of chloride ion into the structure and monitoring the interface between the metal and the cementitious material to detect the onset of corrosion, then determining the chloride corrosion threshold, which is defined as the chloride content of the cementitious material once corrosion has begun. This determination can be performed over a time period of as little as 2 to 3 weeks rather than the months or years required by conventional chloride corrosion test procedures.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: November 11, 2003
    Assignees: MMFX Steel Corporation of America, The Texas A&M University System
    Inventors: David Trejo, David R. Miller
  • Determination of chloride corrosion threshold for metals embedded in cementitious material
    Publication number: 20030011387
    Abstract: The chloride corrosion threshold of a metal embedded in a cementitious structure is determined in an accelerated manner by using an electric field to increase the rate of migration of chloride ion into the structure and monitoring the interface between the metal and the cementitious material to detect the onset of corrosion, then determining the chloride corrosion threshold, which is defined as the chloride content of the cementitious material once corrosion has begun. This determination can be performed over a time period of as little as 2 to 3 weeks rather than the months or years required by conventional chloride corrosion test procedures.
    Type: Application
    Filed: May 1, 2002
    Publication date: January 16, 2003
    Applicant: THE TEXAS A&M UNIVERSITY SYSTEM
    Inventors: David Trejo, David R. Miller