Patents by Inventor Egon Buettner

Egon Buettner 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).

  • Novel reaction products of aminoalkylene polycarboxylic acids with secondary amines and middle distillate compositions containing the aforesaid
    Patent number: 5071445
    Abstract: Novel reaction products of aminoalkylene polycarboxylic acids with secondary amines and their use as additives to middle distillates together with conventional ethylene copolymers as flow improvers and conductivity improves.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: December 10, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Brigitte Wegner, Klaus Barthold, Erich Schwartz, Egon Buettner, Manfred Schramm
  • Demulsifiers for breaking crude-oil emulsions and their use
    Patent number: 4537701
    Abstract: Petroleum demulsifiers which contain, as the active ingredients, oxyalkylated isoalkylphenol-formaldehyde resins and oxyalkylated polyalkylenepolyamines.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: August 27, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Rolf Fikentscher, Egon Buettner, Wilhelmus Slotman, Erich Schwartz, Rudolf Mohr