Patents by Inventor Reinhard Doengers

Reinhard Doengers 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).

  • Method for the production of easily wetted, water-soluble, powdered at least alkylated non-ionic cellulose ethers
    Publication number: 20040110942
    Abstract: The invention relates to a method for the production of at least alkylated, non-ionic cellulose ethers, whereby at least 10% of all hydroxy groups contained therein are alkylated and which may flocculate in water, within a temperature range of 45 to 95° C. The invention is characterised in that at least one surfactant in solid, liquid or solution form is added to the cellulose for production of the cellulose ether.
    Type: Application
    Filed: May 5, 2003
    Publication date: June 10, 2004
    Inventors: Alf Hammes, Reinhard Doengers