Patents by Inventor Johannes H. Grobler

Johannes H. Grobler 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).

  • Sealing of leaks in tanks and the like
    Patent number: 4296932
    Abstract: A method of sealing leaks is disclosed comprising the use of a bituminous rubber latex emulsion. The emulsion is introduced into the passage through which a fluid is leaking by injecting, often at considerable pressures and a coagulant is used to coagulate the emulsion. Water may be used as a coagulant. Alternatively, the emulsion may be carried into the passages by the water.
    Type: Grant
    Filed: September 13, 1979
    Date of Patent: October 27, 1981
    Inventor: Johannes H. Grobler