Patents by Inventor Johannes H. H. Raven

Johannes H. H. Raven 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 prearing polyolefin filaments having great adhesive strength for polymeric matrices, as well as for preparing reinforced matrix materials
    Patent number: 4911867
    Abstract: The adhesive strength of highly oriented, highmolecular polyolefin filaments for polar polymeric matrices is improved by subjecting the filaments to a corona treatment with a total irradiation dosage of ##EQU1## effected intermittently in several smaller dosages. The process is particularly suited for treating superstrong polyethylene fibers, and making reinforced materials while applying as matrix a polyester, polyamide or epoxy resin.
    Type: Grant
    Filed: November 30, 1987
    Date of Patent: March 27, 1990
    Assignee: Stamicarbon B.V.
    Inventors: Rudolf J. H. Burlet, Johannes H. H. Raven, Pieter J. Lemstra