Patents by Inventor Manfred Schnabel

Manfred Schnabel 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).

  • Dyeing or printing of acid-treated glass fibers with anionic dye and cationic compound
    Patent number: 5074886
    Abstract: Process for dyeing or printing glass fibers, in particular textile glass fibers in various forms, by dyeing or printing the fiber materials with anionic dyes in the presence of cationic compounds following an acid pretreatment. The cationic compounds may be applied to the fiber material before the actual dyeing or printing process or else be applied together with the dye from the same dyeing liquor or printing paste. Suitable cationic compounds are in particular polyquaternized ammonium compounds. Level dyeings are obtained on the glass fiber materials with good light fastness properties.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: December 24, 1991
    Assignees: Ciba-Geigy Corporation, Frenzelit-Werke GmbH & Co.
    Inventors: Klaus Fussmann, Manfred Schnabel, Ulrich Schmidt, Hans H. Bosshard, Manfred Herrmann, Othmar Frank