Patents by Inventor Alfred Hereth

Alfred Hereth 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).

  • Process for protecting metal or lacquered surfaces
    Patent number: 4315957
    Abstract: The invention relates to a process for the temporary protection of metal and lacquered surfaces comprising applying thereto an aqueous emulsion containing a hydrocarbon wax or the oxidate thereof, optionally waxes based on montan wax and/or natural waxes, as well as a basic saponifying agent and emulsifiers. The wax films resulting from the emulsions are waterproof, however, they are easily removable--even after aging--without the use of a solvent being necessary, merely by a treatment with a water-steam mixture.
    Type: Grant
    Filed: June 25, 1980
    Date of Patent: February 16, 1982
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Alfred Hereth, Klaus Rieger, Josef Wildgruber