Patents by Inventor David L. Polan

David L. Polan 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: 6158620
    Abstract: There is provided a collapsible container for dispensing liquid products, such as soap. The collapsible container is provided with V-shaped hinged portions at either end of a vertical hinge line on the sides of the container to allow inward collapse of the container and recessed panels on the front and back of the container to provide rigidity to the structure, thus allowing a controlled collapse as well as rapid filling of the collapsible container with the liquid soap.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: December 12, 2000
    Assignee: Chester Labs, Inc.
    Inventor: David L. Polan
  • Patent number: 6152330
    Abstract: There is provided a dispensing apparatus in which the housing includes a cover pivotally attached to a backing plate. The cover is movable from a fully open position in which a liquid container may be inserted therein to a closed position, and the cover may be latched to the backing plate in the closed position. When closed, the cover may be pushed from a non-dispensing position in which no liquid is dispensed from the container to an engaging position in which a projection on the interior surface of the cover engages and actuates a bulb-type pressure valve to dispense liquid from the container through a dispensing tube from the bottom of the housing.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: November 28, 2000
    Assignee: Chester Labs, Inc.
    Inventor: David L. Polan
  • Patent number: D417111
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: November 30, 1999
    Assignee: Chester Labs, Inc.
    Inventor: David L. Polan
  • Patent number: D433938
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: November 21, 2000
    Assignee: Chester Labs, Inc.
    Inventor: David L. Polan