Patents by Inventor Svein Holtermann

Svein Holtermann 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).

  • After-treatment of finished, cellulose-containing fibrous materials with liquid ammonia
    Patent number: 4451262
    Abstract: A process for finishing cellulose-containing fibrous material, in which (a) commercially available textile finishing agents are applied to the fibrous material and fixed, (b) the material is subsequently washed and dried, if necessary, and (c) the textile material is after-treated with liquid ammonia.As a result of the after-treatment with liquid ammonia, the mechanical properties of the finished fibrous material, from the textile point of view, and in particular the tear strength and the handle, are considerably improved.
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: May 29, 1984
    Assignee: Ciba-Geigy Corporation
    Inventors: Fritz Mayer, Svein Holtermann