Patents by Inventor David J. Edge

David J. Edge 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 compositions
    Patent number: 4680143
    Abstract: A high foaming aqueous liquid detergent composition suitable inter alia for manual dishwashing is based on a ternary active detergent system of (a) dialkyl sulphosuccinate, (b) alkylbenzene sulphonate and/or secondary alkane sulphonate and (c) alkyl ether sulphate. This combination gives both performance and formulation (viscosity, hydrotropy) benefits.
    Type: Grant
    Filed: June 25, 1985
    Date of Patent: July 14, 1987
    Assignee: Lever Brothers Company
    Inventors: David J. Edge, Appaya R. Naik, Melvin Scott
  • Liquid detergent composition comprising selected alkylbenzene sulphonates and alkyl ether sulphates
    Patent number: 4537709
    Abstract: In light-duty liquid detergent compositions suitable for hand dishwashing, improved foaming performance, especially in hard water, is obtained by using combinations of particular alkylbenzene sulphonates (linear C.sub.10 -C.sub.13 alkylbenzene sulphonates substantially free of other alkyl chain lengths and containing only minor amounts of C.sub.13 material) and particular alkyl ether sulphates (those containing 20% or less of C.sub.14 and above material and having an average degree of ethoxylation of from 1 to 12).
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: August 27, 1985
    Assignee: Lever Brothers Company
    Inventors: David J. Edge, Appaya R. Naik, Melvin Scott
  • Detergent compositions containing sulphosuccinates and high bloom gel strength protein
    Patent number: 4434088
    Abstract: The foaming performance in hard water of dishwashing detergent compositions containing dialkyl sulphosuccinates is enhanced by including in the composition a substantially water-soluble protein having a Bloom gel strength of at least 50 g, preferably from 150 to 300 g and especially from 200 to 250 g. The protein is advantageously a gelatin.
    Type: Grant
    Filed: July 22, 1982
    Date of Patent: February 28, 1984
    Assignee: Lever Brothers Company
    Inventors: Reginald Billington, David J. Edge, Peter Winterbotham
  • Detergent compositions containing sulphosuccinates and undegraded protein
    Patent number: 4434089
    Abstract: The foaming performance in hard water of dishwashing detergent compositions containing dialkyl sulphosuccinates is enhanced by including in the composition a substantially water-soluble substantially undegraded protein, such as soluble casein, sodium caseinate, soluble gelatin or chicken egg albumen.
    Type: Grant
    Filed: July 22, 1982
    Date of Patent: February 28, 1984
    Assignee: Lever Brothers Company
    Inventors: Reginald Billington, David J. Edge, Peter Winterbotham
  • Process for making detergent compositions
    Patent number: 4298491
    Abstract: The autoxidation of aqueous detergent slurries containing major quantities of nonionic surfactant during spray-drying is inhibited by the use of a charge-transfer agent. The charge-transfer agent may be a charge-transfer acceptor or a charge-transfer donor or a precursor of either of these. The agent may be present in an amount of from 0.05 to 2% by weight and the nonionic surfactant in an amount of 3% or more by weight based on the weight of the fully formulated detergent powder. The preferred charge-transfer agent is potassium iodide.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: November 3, 1981
    Assignee: Lever Brothers Company
    Inventors: Andrew C. Coxon, David J. Edge, Mark L. L. Lapper