Patents by Inventor Kjell E. Berg

Kjell E. Berg 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).

  • Fluid directing systems
    Patent number: 5017042
    Abstract: Collapsible cellular arrays constructed of biodegradable material are employed to define liquid flow courses in a subterranean environment. The cellular arrays receive and support, in a desired orientation and position, liquid delivery/removal conduits. The cells of the arrays are preferrable hexagonal in shape and are filled with a particulate filter material.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: May 21, 1991
    Inventors: Robert N. Minor, Kjell E. Berg