Patents by Inventor Antonius Roos

Antonius Roos 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).

  • Process for manufacturing yarns by meltspinning polyethylene terephthalate
    Patent number: 5009829
    Abstract: A single-step process by which HMLS industrial yarns may be manufactured, in which (a) the solid PETP has a relative viscosity (determined as described below) in the range of 1.8 to 2.1; (b) before spinning, the PETP is mixed with 0.1-0.8% by weight of a bis-(kenenimine); (c) the molten PETP is drawn off from the spinneret orifices at a speed in the range of 1500 to 4000 m/min; and (d) the spun product formed is drawn without intermediate winding at a draw ratio of 1.5 to 4.0, the draw ratio being selected such that the final speed of the yarn is not higher than 6000 m/min.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: April 23, 1991
    Assignee: Akzo N.V.
    Inventor: Antonius Roos