Patents by Inventor Pierre J. Ekkerink

Pierre J. Ekkerink 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).

  • Mattress assembly
    Patent number: 4369535
    Abstract: The invention relates to a mattress assembly comprising an elongated framework, a plurality of parallel laths fastened therein in the direction of width and a mattress consisting at least partly of foam material said mattress assembly being characterized in that the central parts (10) of the laths (8) are located in the mattress and surrounded by foam material and in that the two end parts emerge from the mattress.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: January 25, 1983
    Assignee: Vredestein N.V.
    Inventor: Pierre J. Ekkerink