Patents by Inventor Arthur George Leigh

Arthur George Leigh 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 assistants
    Patent number: 4111826
    Abstract: A bleaching assistant in the form of granulated particles for use in or with a washing and bleaching composition is provided which comprises:(a) 50-85% by weight of a bleaching activator for percompounds selected from the group consisting of N-acyl and O-acyl compounds and carbonic acid esters;(b) 2-25% by weight of a stabilizing agent for percompounds e.g. organic phosphonic acids or ethylenediaminetetraacetate;(c) 7-30% by weight of a nonionic surface-active compound having a melting point of at least 35.degree. C.
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: September 5, 1978
    Assignee: Lever Brothers Company
    Inventors: Arthur George Leigh, Robin John Green