Patents by Inventor Leigh, Arthur G.

Leigh, Arthur G. 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: 4338210
    Abstract: A low temperature bleach system comprises a peracid percursor system and bromide ions. The bromide ions may be supplied by sodium bromide. A theoretical peracid to bromide equivalent ratio between 2:1 and 1:2 is preferred, but dye transfer and hygiene benefits are possible with a ratio up to 1:32. The precursor system is typically diphthaloyl peroxide or sodium perborate plus tetraacetyl ethylenediamine (TAED). If the perborate is in excess, a scavenger such as catalase should be included. The system may be used as such or incorporated in a conventional detergent base.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: July 6, 1982
    Assignee: Lever Brothers Company
    Inventors: Anthony H. Clements, Leigh, Arthur G.