Patents by Inventor John Stuart Cottrell

John Stuart Cottrell 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).

  • Patent number: 5807816
    Abstract: Improved light duty cleaning compositions comprising 15-50% surfactant on product can be formulated such that they comprise, on surfactant:a) 50-70% wt of a mixture of primary alkyl sulphate and alkyl ether sulphate, wherein the average ethoxylation value of the mixture is 0.5-2.5,b) 2-8% wt of a betaine, an amine oxide or a mixture of betaine and amine oxide, and,c) 25-45% wt of an alkylpolyglucoside surfactant.It is believed that compositions which have an excess in surfactant of a mixture of both primary alkyl sulphate and alkyl ether sulphate in a specified ratio, i.e. such that the total EO is 0.5-2.5, together with a lesser, but significant level of APG and a minor amount of betaine, provide an acceptable combination of mildness, cleaning and foaming under a broad range of conditions and show surprising benefit in a bowl-wash situation.
    Type: Grant
    Filed: May 9, 1996
    Date of Patent: September 15, 1998
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: John Stuart Cottrell, George Kerr Rennie