Patents by Inventor Wolfgang Drees

Wolfgang Drees 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 alkoxylation products of epoxidized fats as antifoaming agents
    Patent number: 6057375
    Abstract: A method of controlling or preventing foam in an aqueous system is provided, wherein an effective amount of an alkoxylated, epoxidized fatty compound that has been ring-opened with a nucleophile is determined and added to the system. After ring opening with the nucleophile, the epoxidized fatty compound is alkoxylated with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, and butylene oxide.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: May 2, 2000
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Horst-Werner Wollenweber, Klaus Hornfeck, Dieter Kaps, Bernhard Nellessen, Rita Koester, Wolfgang Drees, Peter Daute