Patents by Inventor David Maddison

David Maddison 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).

  • Liquid soap dispenser
    Patent number: 4573612
    Abstract: A liquid dispenser has a reservoir to which a refill container may be connected via a fitment in order to determine the level of soap in the dispenser through a window of the reservoir. The refill container further has a dispensing tube through which a predetermined amount of soap is dispensed on actuation of the lever.The tube and fitment are both mounted to a mounting component to which the bag is fixed, a duct being provided between the tube and fitment for liquid communication thereto.
    Type: Grant
    Filed: November 28, 1983
    Date of Patent: March 4, 1986
    Assignee: Kimberly-Clark Limited
    Inventors: David Maddison, Christopher Dawson
  • Module for liquid detergent pump and control components
    Patent number: D289480
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: April 28, 1987
    Assignee: Lever Brothers Company
    Inventors: Wilhelmus K. der Kinderen, Veronica Steel, David Maddison
  • Multicolor shooting tripod for use on ice and rocky surfaces
    Patent number: D680612
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: April 23, 2013
    Inventor: Ryan David Maddison