Patents by Inventor Rudolf J. H. Burlet

Rudolf J. H. Burlet 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).

  • Patent number: 5102594
    Abstract: The invention relates to a process for the processing of a thermoplastic polycondensation polymer by supplying the polymer in finely distributed form to a first vented extruder in which the polymer is devolatilized at a temperature below its melting temperature. The polymer is then placed in a second extruder where the polymer is transported below the melting temperature of the polymer over a first length of the screw from the inlet of the extruder, with constant evacuation of volatile components by means of a vacuum exhausting device at a vacuum of less than 10 mbar and the polymer is compressed and melted over a second length of the screw and then leaves the extruder as an end product of a semimanufacture.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: April 7, 1992
    Assignee: Stamicarbon B.V.
    Inventors: Rudolf J. H. Burlet, Jozef M. H. Lemmens
  • 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
  • Patent number: 4830699
    Abstract: Process and device for delabeling of plastic containers by immersing them in a liquid bath heated to above the disorientation temperature of the containers and thereafter separating the loose labels (optionally cups) from the container bodies by bringing them on an inclined sieve vibrating in such a way that when the screen deck is in its highest position in the vibrating motion, the component of motion parallel to the screen deck is directed toward the highest point of the screen.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: May 16, 1989
    Assignee: Stamicarbon B.V.
    Inventors: Rudolf J. H. Burlet, Lambertus M. J. Tabor
  • Patent number: 4579784
    Abstract: The invention accords to a laminate at least consisting of a first layer from a mixture of at least a propylene polymer and an ethylene-vinylalcohol copolymer and a second layer from at least one propylene polymer, the first layer at least consisting of a mixture of 60-99 parts by weight of a substantially crystalline propylene polymer and 1-40 parts by weight of an ethylene-vinylalcohol copolymer, the second layer at least consisting of a substantially crystalline propylene polymer, the said ethylene-vinylalcohol copolymer having a melting temperature at atmospheric pressure which is at most equal to and not more than 30K lower than the melting temperature at atmospheric pressure of the one of the substantially crystalline propylene polymers used having the highest melting temperature, and the laminate having been subjected to multi-axial stretching to a degree of at least twice in at least 2 directions at a temperature which at most equals the melting temperature of the one of the substantially crystalline
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: April 1, 1986
    Assignee: Stamicarbon B.V., Licensing Subsidiary of DSM
    Inventors: Pieter J. Lemstra, Henricus E. H. Meyer, Rudolf J. H. Burlet