Patents by Inventor Anthony H. Clements

Anthony H. Clements 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: 5409633
    Abstract: The invention relates to bleach compositions containing, as the bleach, a hydrophobic peroxyacid which is sterically bulky, so that the smallest cross-sectional area of the peroxyacid, defined by multiplying together the two smallest dimensions of the molecule, is from 30 to 80 .ANG..sup.2. Preferred are peroxyacids containing a tertiary alkyl group, a norbornane ring or an adamantone ring. Such peroxyacids are effective for the bleaching of stains, especially hydrophobic stains, with low accompanying dye damage.
    Type: Grant
    Filed: September 15, 1993
    Date of Patent: April 25, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Anthony H. Clements, Colin W. Kerr, John R. Nicholson
  • Patent number: 5336447
    Abstract: A process and composition for treating fabrics or textiles to help restore and/or prevent changes in hue brought about by fluorescer agent absorption on fabrics or textiles.In one aspect, the composition comprises a quenching agent and a detergent active.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: August 9, 1994
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventor: Anthony H. Clements
  • Patent number: 5089166
    Abstract: Storage-stable washing and/or bleaching compositions containing a peroxyacid and/or a peroxyacid-yielding compound as bleaching agent are disclosed which contain as optical brightener a benzofuranyl biphenyl compound of the formula: ##STR1## wherein R is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, phenoxy or benzyloxy as mono or multiple substituent; M is hydrogen and/or an equivalent of a non-chromophoric cation; n is an integer from 0-2, and m is 0 or 1, with the proviso that n and m are not both zero.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: February 18, 1992
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventor: Anthony H. Clements
  • Patent number: 4427566
    Abstract: Washing compositions especially designed for washing mixed colored fabrics including mixed loads of colored and white fabrics at lower temperatures are disclosed. The washing compositions comprise a bleach system useful for the reduction of dye-transfer in fabric washing at lower temperatures, said bleach system consisting essentially of (1) a peracid compound which may be an organic peracid, a peracid salt or an organic peracid precursor which generates peracids by hydrolysis or perhydrolysis, and (2) an organic or inorganic material which delivers iodide ions in aqueous media. Preferred material which delivers iodide ions in aqueous media is a water-soluble iodide salt, such as potassium or sodium iodide.
    Type: Grant
    Filed: February 4, 1982
    Date of Patent: January 24, 1984
    Assignee: Lever Brothers Company
    Inventor: Anthony H. Clements
  • 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.
  • Patent number: 4337164
    Abstract: A low temperature bleach system comprises an organic peracid and bromide ions in the absence of aldehydes and ketones. The bromide ions may be supplied from sodium bromide and typical peracids include diperisophthalic acid and monoperoxyphthalic acid. The peracid to bromide equivalent ration between 2:1 and 1:2 is preferred, but dye transfer and hygiene benefits are possible with a ratio up to 1:50. The system may be used as such or incorporated in a conventional detergent base.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: June 29, 1982
    Assignee: Lever Brothers Company
    Inventor: Anthony H. Clements