Patents by Inventor Johannes Hospers

Johannes Hospers 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 of manufacturing sealed rope and knotted netting from such rope
    Patent number: 4378725
    Abstract: A method for producing a sealed rope of braided or twisted filaments. Heat-shrinkable filaments are braided or twisted about a core of a thermoplastic material to form a rope and the rope is placed under tension and treated to cause the thermoplastic core material to melt. Simultaneously the rope is maintained at a temperature sufficient to cause the heat-shrinkable filaments to shrink but not to melt, whereby the shrinking of the filaments, while the rope is under tension, reduces the cross section of the rope and causes the material to penetrate into the openings between and to surround and seal the filaments of the rope.
    Type: Grant
    Filed: November 20, 1980
    Date of Patent: April 5, 1983
    Assignee: Anza B.V.
    Inventors: Johannes Hospers, Gerhard ten Lohuis