Patents by Inventor Gunter Frischmann

Gunter Frischmann 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).

  • Patent number: 5868985
    Abstract: A process for manufacturing cellulose fibers by extrusion of a spinning solution, containing dissolved cellulose, into a gaseous medium through a predetermined gas zone, with subsequent immersion in and guidance through a coagulation bath over a predetermined coagulation zone, drawing the cellulose fibers obtained and winding them up, characterized in that after the gas zone the extruded spinning solution is immersed in a coagulation bath accelerated to a predetermined velocity and flowing laminarly at least approximately in the direction of the extruded spinning solution, whereby the coagulation liquid is fed laterally into the path of the spinning solution and the flow direction of the spinning solution and the coagulation liquid is kept approximately parallel throughout the entire coagulation zone, and in that the cellulose fibers obtained are laterally deflected upon leaving the coagulation zone and then wound up.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: February 9, 1999
    Assignee: Akzo Nobel NV
    Inventor: Gunter Frischmann