Patents by Inventor Henricus E. H. Meyer

Henricus E. H. Meyer 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).

  • Laminates on the basis of polypropylene and process for preparing such laminates
    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