Patents by Inventor Klaus-Peter Herold

Klaus-Peter Herold 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).

  • Use of selected oleophilic alcohols in water-based drilling fluids of the O/W-emulsion type and corresponding drilling fluids with improved ecological acceptability
    Patent number: 5194422
    Abstract: Substantially water-insoluble, oleophilic mono- and/or polyfunctional alcohols of natural and/or synthetic origin which have flash points of at least 80.degree. C., or corresponding solutions of mono- and/or polyhydric alcohols in ecologically acceptable water-insoluble oils as the dispersed oil phase of water-based O/W-emulsion drilling fluids, which are suitable for an environmentally-acceptable development of geological formations and which, if desired, contain insoluble, finely particulate weighting agents for the formation of water-based O/W-emulsions drilling muds and/or further additives, such as emulsifiers, fluid-loss additives, wetting agents, alkali reserves and/or auxiliary substances for the inhibition of drilled rock of high water-sensitivity.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: March 16, 1993
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Heinz Mueller, Klaus-Peter Herold, Stephan von Tapavicza, Johann F. Fues