Patents by Inventor William J. van Loo

William J. van Loo 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).

  • Biconstituent acrylic fibers by melt spinning
    Patent number: 4278634
    Abstract: A mixture of (1) a single phase melt of water and a first acrylonitrile polymer containing at least 85% acrylonitrile and (2) a pure melt of a second acrylonitrile polymer containing from about 60-72% acrylonitrile is extruded through the orifices of a spinneret directly into a steam-pressurized solidification zone to provide a biconstituent fiber which is stretched while within the solidification zone.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: July 14, 1981
    Assignee: American Cyanamid Company
    Inventors: Maurice M. Zwick, William J. van Loo