Patents by Inventor Douglas J. Kruger

Douglas J. Kruger 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).

  • Thermoinsulated container with internal structures, for rapid composting
    Patent number: 5152414
    Abstract: An improved composting container comprising a plurality of panels fixed edge-to-edge to form a curved enclosure. Rods are inserted through some of the panels such that the rods form pyramidal shaped groups within the enclosure, in one hemisphere of the container. The panels are each thin walled enclosures having insulating spaces therein, with gas passageways passing through the panels. Straps are provided to maintain the panels in edge-wise interrelationships. Alternative embodiments provide towable and stationary composting devices.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: October 6, 1992
    Inventor: Douglas J. Kruger