Patents by Inventor John Anthony Rippon

John Anthony Rippon 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).

  • Process for dyeing wool and other keratin fibres
    Patent number: 5795354
    Abstract: A method of applying an anionic dye to keratin fibers which involves pre-treating the fibers by contacting them with a solution of an amphoteric surfactant, and then applying the dye to the pre-treated fibers. A method of preparing keratin fibers for dyeing, printing, or other treatments by contacting the fibers with a solution containing an amphoteric surfactant but substantially no dye.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: August 18, 1998
    Assignee: Commonwealth Scientific and Industrial Research Organization
    Inventor: John Anthony Rippon