Patents by Inventor Jos Valkenburg

Jos Valkenburg 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).

  • Filter device for the filtration of gases and/or fluids
    Patent number: 5509950
    Abstract: The filter device (10) has a filter element (12) including a filter medium (20) arranged in zig-zag shaped pleats. On its two longitudinal sides extending in the pleating direction (36), the filter medium (20) is provided with stabilizing strips (34) bonded thereto for stabilizing the zig-zag-shaped pleated configuration of the filter medium (20). During use of the filter device (10), the filter element (12) is arranged within a filter element holding frame (14) which is inserted in a holding members, e.g. in the air inlet shaft (18) of an air conditioning system. Due to a certain inherent stability of shape of the filter medium (20) and the stabilizing strips (34), the filter element (12) is sufficiently firm and has a self-supporting construction. The filter element (12) is easy to handle and can be inserted into the filter element holding frame (14) in a simple manner. Except for the actual filter medium (20), the filter element (12) requires little extra material, i.e.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: April 23, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Peter van de Graaf, Jos Valkenburg