Patents by Inventor Helmut Leiner

Helmut Leiner 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).

  • Yarns, fibres and filaments that can be fibrillated, method and device for their production
    Patent number: 6830809
    Abstract: A splittable yarns, fiber or filaments and a method and device for their production. The yarns, fiber or filaments includes at least two elementary filaments of a first polymer A and each second elementary filament is sheathed with a second polymer B.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: December 14, 2004
    Assignee: Carl Freudenberg KG
    Inventors: Engelbert Loecher, Helmut Leiner, Robert Groten, Georges Riboulet
  • Yarns, fibres and filaments that can be fibrillated, method and device for their production
    Publication number: 20040104116
    Abstract: The invention relates to yarns, fibres or filaments that can be fibrillated and to a method and device for their production. According to the invention, said yarns, fibres or filaments consist of at least two elementary filaments of a polymer A and each second elementary filament is sheathed with the polymer B.
    Type: Application
    Filed: September 25, 2003
    Publication date: June 3, 2004
    Inventors: Engelbert Loecher, Helmut Leiner, Robert Groten, Georges Riboulet
  • Stretching device and method of manufacturing stretched synthetic filaments
    Publication number: 20030034585
    Abstract: A stretching device and method of manufacturing stretched synthetic filaments (2, 3) includes a spinning device (1) and a pneumatic drawing-off device (10). A heating device (5) is situated between the spinning device (1) and the drawing-off device (10) which heats the filaments (2, 3) to a temperature between their glass-transition temperature and their melting temperature.
    Type: Application
    Filed: August 5, 2002
    Publication date: February 20, 2003
    Inventors: Engelbert Locher, Helmut Leiner, Robert Groten, Peter Dengel, George Riboulet