Patents by Inventor Jayne Elisabeth Nation

Jayne Elisabeth Nation 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).

  • Bleaching compositions comprising hypochlorite and delivery systems therefor
    Patent number: 6042744
    Abstract: The invention provides a bleaching composition of pH 8-14 which comprises an oxygen transfer agent and hypochlorite or a source thereof and a method for bleaching a stained substrate which comprises the step of treating the substrate with a bleaching composition of pH 8-14 which bleaching composition comprises an oxygen transfer agent and hypochlorite or a source thereof. Particularly preferred oxygen transfer agents are imine quaternary ammonium salts such as N-methyl-3,4-dihydroisoquinolinium salts. Where these salts are used, suitable counter-ions include halides, sulphate, methosulphate, sulphonate, p-toluene sulphonate and phosphate. Oxygen transfer agents which comprise a quaternary nitrogen atom are preferred. In the alternative, the oxygen transfer agent can be a sulphonimine.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: March 28, 2000
    Assignee: Lever Brothers Company, division of Conopco, Inc.
    Inventors: Jayne Elisabeth Nation, Katherine Mary Thompson, David William Thornthwaite