Patents by Inventor Wilhelm Mohr

Wilhelm Mohr 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).

  • Roving and process for its manufacture
    Patent number: 4028874
    Abstract: A roving is prepared by winding at least one filament yarn around a fiber strand which is untwisted and unsized and has a total titer of from 1,000 to 30,000 dtex. The filament yarn(s) used for winding have an elongation at break of less than 50% and a titer of less than 50 dtex. The length of cohesion of the roving is in the range of from 15 to 500 meters and one meter of the fiber strand is provided with 20 to 300 windings. The roving can be produced in simple manner and it is excellently suitable for the direct spinning of fine yarns.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: June 14, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Fritjof Maag, Friedrich Unger, Wilhelm Mohr