Patents by Inventor Andrew J. Kerslake

Andrew J. Kerslake 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).

  • Manufacture of multi-colored detergent bars
    Patent number: 4634564
    Abstract: Multi-colored detergent bars are manufactured by adding a visually distinct liquid to one part of the detergent feedstock before it enters the refiner stage.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: January 6, 1987
    Assignee: Lever Brothers Company
    Inventor: Andrew J. Kerslake