Patents by Inventor Adrian W. Walker

Adrian W. Walker 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).

  • Solid bleaching block
    Patent number: 4741853
    Abstract: The present invention provides a solid bleaching block on the basis of an alkali metal monopersulphate for use in an in-cistern dispensing device, also comprising at least 5% by weight of an alkaline earth metal soap. By the use of these soaps, blocks are obtained which release the bleaching agent at an acceptable rate yet maintain their block structure.
    Type: Grant
    Filed: February 11, 1987
    Date of Patent: May 3, 1988
    Assignee: Lever Brothers Company
    Inventors: Adrian W. Walker, David E. Clarke
  • Liquid bleaching compositions
    Patent number: 4642198
    Abstract: Aqueous liquid bleaching compositions comprising a solid, particulate, substantially water-insoluble organic peroxy acid, e.g. diperoxydodecanedioic acid, stably suspended in an acidic surfactant structured liquid comprising a surfactant, an electrolyte and water in the substantial absence of a thickening agent.
    Type: Grant
    Filed: April 26, 1985
    Date of Patent: February 10, 1987
    Assignee: Lever Brothers Company
    Inventors: Robert W. Humphreys, Adrian W. Walker, Robin J. Green, Stephen W. Russell
  • Detergent bleach compositions
    Patent number: 4579678
    Abstract: Built detergent bleach compositions having improved low temperature bleach performance comprising a sequestrant builder; a peroxyacid selected from peracetic acid, monoperoxyphthalic acid and monopersulphate and water soluble salts thereof; and 0.005 to 0.1% by weight of Manganese (II) ions, in the substantial absence of hydrogen peroxide. The compositions can be used for washing and cleaning fabrics at temperatures below 40.degree. C.
    Type: Grant
    Filed: June 13, 1984
    Date of Patent: April 1, 1986
    Assignee: Lever Brothers Company
    Inventor: Adrian W. Walker
  • Detergent bleach compositions
    Patent number: 4578206
    Abstract: Built detergent bleach compositions comprising a surface active agent, a peroxide compound/peracid precursor bleach system which forms peracids in solution, an alkali metal carbonate builder and trace levels of manganese (II) ions.The detergent bleach compositions deliver an improved bleach performance and can be used for washing/cleaning of fabrics at temperatures of below 40.degree. C.
    Type: Grant
    Filed: June 13, 1984
    Date of Patent: March 25, 1986
    Assignee: Lever Brothers Company
    Inventor: Adrian W. Walker