Patents by Inventor Leo Drago

Leo Drago 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 for packaging and dyeing yarns and yarn packaging obtained thereby
    Patent number: 4042989
    Abstract: Method for packaging and dyeing yarns comprising the steps of winding at least one yarn on a provisional core, at the same time imparting to the yarn a continuous rotation and a rciprocating translation, and to advance the wound yarn continuously so that it comes off the said core. The tubular packaging that continuously comes off its support core has brought to bear on it a plurality of jets or sprays of dye directed radially, over the entire circumference of the packaging.
    Type: Grant
    Filed: April 8, 1976
    Date of Patent: August 23, 1977
    Assignee: Robreli Holding S.A.
    Inventors: Leo Drago, Edmond Ries