Patents by Inventor Eberhard Staude

Eberhard Staude 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).

  • Process for the production of a dry desalting cellulose acetate membrane
    Patent number: 3957935
    Abstract: This invention relates to an improvement in the process for the production of a dry cellulose acetate membrane comprising forming a sheet material from a cellulose acetate solution, treating the sheet material with a liquid and drying, the improvement comprising treating the sheet material with an aqueous solution of a polyvalent aliphatic alcohol having 2 to 4 carbon atoms for about 2 to 10 minutes at a temperature in the range of about 50.degree. to 110.degree.C, and drying said sheet material at a temperature not in excess of about 50.degree.C.
    Type: Grant
    Filed: December 5, 1974
    Date of Patent: May 18, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Eberhard Staude