Patents by Inventor Theo Dietrich

Theo Dietrich 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).

  • Highly elastic crimp yarn
    Patent number: 4030278
    Abstract: Process and apparatus for producing highly elastic crimp yarn by the draw-texturing method using a false-twister, in which the filament speed exceeds 300 m/min and in which setting is carried out at constant filament tension by brief contact of the filament with a heating rail with roughened contact surface and a length of at most 400 mm.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: June 21, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-August Heinroth, Theo Dietrich, Hans Bach, Hans-Dieter Jurischka