Patents by Inventor Oke Brauer

Oke Brauer 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).

  • Patent number: 5378826
    Abstract: The present invention relates to a process for the preparation of nitrocellulose having particular properties by compression by means of contrarotating rollers.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: January 3, 1995
    Assignee: Wolff Walsrode AG
    Inventors: Lutz Hoppe, Bernd Haase, Oke Brauer, Klaus Szablikowski
  • Patent number: 5360902
    Abstract: The present invention relates to a process for producing methyl hydroxyalkyl cellulose ethers by alkalisation and etherification of celluloses, rinsing the methyl hydroxyalkyl cellulose ethers with water at higher temperatures and recovering the short-chain cellulose ethers that are soluble in the wash water, wherein the wash water containing sodium chloride and organic by-products is passed across a first stage of a membrane filtration having a molecular cut size of 200 to 150,000 Dalton, is concentrated during this process and passes across a second stage of a membrane filtration.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: November 1, 1994
    Assignee: Wolff Walsrode AG
    Inventors: Oke Brauer, Bernd Haase, Dieter Herzog, Lutz Riechardt, Gerd Sonnenberg, Dietrich Tegtmeier