Patents by Inventor Sylvia C. Hall

Sylvia C. Hall 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).

  • Detection of potential for corrosion of steel reinforced composite pipe
    Patent number: 5529668
    Abstract: This method and apparatus detects the potential for corrosion of pipes fabricated out of conductive material embedded in non-conductive material, due to contact between a conductive medium foreign to the pipe and the conductive material embedded within the pipe wall. The electric potential between the foreign medium and the pipe conductive material is determined. The stability of the potential is then ascertained. If the potential does not vary beyond a predetermined range over a period of time, the potential is deemed stable and is indicative of contact between the foreign medium and the conductive material within the pipe, fostering corrosion. An unstable voltage indicates lack of electrical contact.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: June 25, 1996
    Assignee: Ameron, Inc.
    Inventor: Sylvia C. Hall