Patents by Inventor Dirk Stahlmann

Dirk Stahlmann 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).

  • Method of producing continuous multifilament yarns
    Patent number: 4202855
    Abstract: A method for producing a multifilament yarn by melt spinning of individual filaments which are grouped together to form yarn, in which, before winding, the yarn is subjected, in addition to the actual removal forces acting from the outside on the yarn, to further forces produced by gas streams which accompany the yarn in its longitudinal direction.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: May 13, 1980
    Assignee: Karl Fischer, Apparate-und Rohrleitungsbau
    Inventors: Luder Gerking, Dirk Stahlmann, Horst Rothert, Wolf Karasiak