Patents by Inventor Anna-Luise Bourguignon

Anna-Luise Bourguignon 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 filter elements based on aromatic polyamide
    Patent number: 4627992
    Abstract: Processes for the production of filter elements based on aromatic polyamide in which a semi-finished filter element is produced from a solution of the polyamide in aprotic solvent and the polyamide is then coagulated by immersion in a liquid bath containing precipitating agent may be used for the production of filter elements with a pore size of from 0.05 .mu.m to 10 .mu.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: December 9, 1986
    Assignee: Seitz-Filter-Werke Theo & Geo Seitz GmbH & Co.
    Inventors: Charles T. Badenhop, Anna-Luise Bourguignon, Joachim Fischer