Patents by Inventor Koen Velleman

Koen Velleman 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).

  • Membrane for membrane switches and composing elements thereof
    Patent number: 4695681
    Abstract: Membrane for membrane switches and composing elements thereof, characterized thereby that it mainly consists of a profiled top layer (2) made of a resilient material and of an underlying supporting layer (1) that is provided with an opening (3), the top layer (2) having a recess fitting in the opening (3) and consisting of side-walls (5) and a part suspended therebetween having the shape of a spherical segment constituting the membrane (6) proper.
    Type: Grant
    Filed: May 15, 1986
    Date of Patent: September 22, 1987
    Assignee: Velleman-Switch, naamloze vennootschap
    Inventor: Koen Velleman