Patents by Inventor Jerry S Chang

Jerry S Chang 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).

  • Patent number: 6223464
    Abstract: An apparatus for repelling ground termites from an area surrounding a structure. The apparatus is connected to a power source and includes first second sets of electrodes positioned in a ground area on opposing sides of the structure. A first lead line is connected between the first set of electrodes and the power source for supplying an electrical current to the first set of electrodes and a second lead line is connected between the second set of electrodes and the power source for supplying an electrical current to the second set of electrodes. The electrical current supplied to the first and second sets of electrodes is delivered to the ground in which the first and second sets of electrodes is positioned and flows through the ground between the first and second sets of electrodes forming a barrier region within which any termites will be electrocuted. The first and second sets of electrodes preferably include at least four electrodes.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: May 1, 2001
    Inventors: Nelson M Nekomoto, Jerry S Chang