Patents by Inventor Syliva Stapper-Druyen

Syliva Stapper-Druyen 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).

  • Use of special compounds as smoothing agents in combing oils
    Patent number: 5464660
    Abstract: Special compounds, having solidification points above 25.degree. C., selected from the group of dialkylethers and/or carboxylic acid esters are used as smooth agents for the production of wool combed slivers.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: November 7, 1995
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Wolfgang Becker, Raymond Mathis, Syliva Stapper-Druyen, Karin Robrahn, Rainer Hoffmann, Yasar C. Kiray