Patents by Inventor Sheldon Parker

Sheldon Parker 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).

  • Patent number: 4800841
    Abstract: The combination of a disposable self supporting structure, sorbent pad laminate and litter for the collection of animal urine. The self supporting structure has a base and wall. The sorbent pad laminate includes a moisture impermeable bottom sheet layer in contact with the base and walls, an intermediate sorbent layer of material having a high absorbency capacity for urine, a top claw resistant screen and litter granules. The screen is a urine permeable, flexible member of material which is substantially inert to urine. The screen is formed of strands which are bonded at their intersections and have sufficient tear strength to withstand the clawing action of a cat. The screen must also have sufficiently small hole size to protect the sorbent layer and sheet layer of moisture impermeable material from being torn by animal claws. The bottom sheet layer and top screen are bonded to each other along at least a substantial portion of the screen's periphery.
    Type: Grant
    Filed: February 3, 1987
    Date of Patent: January 31, 1989
    Inventors: Patrick Yananton, Sheldon Parker