Patents by Inventor John H. Kuipers

John H. Kuipers 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).

  • Poultry manure panel and method of making same
    Patent number: 4358496
    Abstract: A poultry panel (20) for collecting manure comprising fiberglass reinforced layers (22, 30) with a preformed corrugated board (24) therebetween. The fiberglass reinforced layers (22, 30) consist of a resin-catalyst mixture (22, 30) containing calcium carbonate as a filler. The corrugated board (24) consists of two layers - one flat (26) and one corrugated (28). The poultry panel (20) provides a hard, rigid material which is easy to handle, inexpensive to manufacture, and resistant to corrosion. The poultry panel (20) is formed by spraying and laying successive layers of the resin-catalyst mixture and fiberglass sheets onto a metal form (44) with the preformed corrugated board (24) embedded between two such layers. The resulting composite is rolled to eliminate air bubble formation, cured until dry, removed from the metal form (44), and cured until hard.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: November 9, 1982
    Assignee: Agri Environment Systems, Inc.
    Inventor: John H. Kuipers