Patents by Inventor William J. Iley

William J. Iley 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).

  • Detergent tablets having specific particle size distribution
    Patent number: 5407594
    Abstract: A tablet of compacted particulate detergent composition in which the tablet, or a discrete region thereof, consists essentially of a matrix of particles substantially free of particles <200 .mu.m. Particles of detergent-active compound and detergent builder and optionally particles of detergent base powder are individually coated with binder/disintegrant capable, when the tablet is immersed in water, of disrupting the structure of the tablet.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: April 18, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Alan J. Fry, Michael J. Garvey, William J. Iley, Geoffrey Newbold, Douglas Wraige
  • Process for preparing particulate detergent additive bodies and use thereof in detergent compositions
    Patent number: 5167852
    Abstract: Sensitive and/or chemically reactive detergent additives can be shaped in the form of spherical particles having the desirable properties of being non-friable, non-dusty and at the same time fast-dissolving. The process comprises the steps of treating a mixture comprising said detergent additive and a hydratable material with a polymeric material of high Tg in a high-speed mixer/granulator. A preferred detergent additive is a peroxyacid bleach precursor.
    Type: Grant
    Filed: October 24, 1990
    Date of Patent: December 1, 1992
    Assignee: Lever Brothers Company, Division of Conopco Inc.
    Inventors: William D. Emery, William J. Iley, Peter C. Knight
  • Process for preparing needle-shaped crystal growth modified burkeite detergent additive
    Patent number: 4900466
    Abstract: Powders prepared by drying a slurry and suitable for use as detergent powders or components thereof contain (or consist of) sodium carbonate and/or the sodium carbonate/sodium sulphate double salt Burkeite the crystal forms of which have been modified by means of a low level of an organic polycarboxylate. The powders are able to absorb and retain very high levels of liquid components such as nonionic surfactants.
    Type: Grant
    Filed: September 20, 1988
    Date of Patent: February 13, 1990
    Assignee: Lever Brothers Company
    Inventors: Colin Atkinson, Michael J. Heybourne, William J. Iley, Peter C. Knight, Peter J. Russell, Thomas Taylor, David P. Jones
  • Antifoam ingredient for detergent compositions
    Patent number: 4818292
    Abstract: A particulate antifoam ingredient suitable for incorporation in a detergent powder product comprises an oily antifoam active substance effective at low wash temperatures, for example, silicone oil/hydrophobic silica or alkyl phosphate/petroleum jelly, on a carrier of swollen hydrated hydrophilic starch. The antifoam ingredient combines improved storage stability and improved flow properties with rapid release of the antifoam active substance at all wash temperatures.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: April 4, 1989
    Assignee: Lever Brothers Company
    Inventors: William J. Iley, John W. Yorke