Patents by Inventor Hubertus Vonken

Hubertus Vonken 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).

  • Foamed polyolefin film or sheet product
    Patent number: 4251584
    Abstract: Disclosed is a film or sheet product comprising a closed cell foam comprised of a mixture of low density polyethylene and at least one ethylene polymer containing polar groups, and, optionally, a crystalline olefin polymer in which the mixture contains from about 0.025 to 1 percent by weight of said polar groups. Also disclosed is a method of making this film or sheet product and a wall covering material based thereon.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: February 17, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerardus van Engelen, Tom van Utteren, Hubertus Vonken