Patents by Inventor Willem C. van Anholt

Willem C. van Anholt 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).

  • Aromatic polyamide yarn impregnated with lubricating particles, a process for the manufacture of such a yarn, and packing material or rope containing this yarn
    Patent number: 5165993
    Abstract: The invention relates to a filament yarn of aromatic polyamides which is impregnated with solid particles of a fluorine-containing polymer and/or graphite. The solid particles are incorporated into the yarn by very uniformly distributing them over the filaments in that the solid particles are applied to the yarn from an aqueous dispersion and the yarn is subjected to a blowing treatment while feeding them at an excess feed rate or not. The yarn thus impregnated is first of all intended to be processed into a packing material or rope.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: November 24, 1992
    Assignee: Akzo N.V.
    Inventors: Willem C. van Anholt, Martinus W. M. G. Peters
  • Intertwined carpet yarn of varying dye affinity and carpets made from said yarn
    Patent number: 4196241
    Abstract: The invention relates to a composite, synthetic multi-filament carpet yarn of polyamide, which yarn is composed of a number of intertwined basic yarns of varying dye affinity and/or crimped yarns of different colors.
    Type: Grant
    Filed: January 9, 1979
    Date of Patent: April 1, 1980
    Assignee: Akzona Incorporated
    Inventors: Willem C. van Anholt, Antonie De Geus