Patents by Inventor Pamela C. Lam

Pamela C. Lam 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 composition with enhanced whitening power
    Patent number: 7754669
    Abstract: A laundry detergent for enhancing fabric whiteness comprising at least an alkyl ethoxysulfate having an alkyl chain length of 12-18 carbons and 5-9 moles of ethylene oxide. In accordance with one embodiment of the invention, the composition further includes an alcohol ethoxylate having an alkyl chain length of 12-18 carbons and 5-9 moles of ethylene oxide.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: July 13, 2010
    Assignee: The Dial Corporation
    Inventors: Thorsten Bastigkeit, Joan Bergstrom, Aleida M. Lester, Pamela C. Lam, Daniel Wood
  • Polymeric bleach precursors and methods of bleaching substrates
    Patent number: 5560749
    Abstract: A bleaching composition and method is described that includes contacting a substrate with a peroxygen compound and a polymeric bleach precursor which has a monomer repeating unit of the structure: ##STR1## wherein R is hydrogen or a C.sub.1 -C.sub.20 radical selected from the group consisting of alkyl, cycloalkyl, alkenyl, cycloalkenyl and aryl radicals; andR.sup.1 is a C.sub.1 -C.sub.40 radical selected from the group consisting of alkyl, cycloalkyl, alkenyl, cycloalkenyl and aryl radicals.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: October 1, 1996
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Stephen A. Madison, Pamela C. Lam
  • Unsymmetrical dicarboxylic esters as bleach precursors
    Patent number: 5078907
    Abstract: A bleach precursor compound, its peroxygen derivative, and detergent compositions containing these materials are disclosed herein. The bleach precursors structurally comprise a pair of different diesters, one ester containing an electrically-charged functional group. Perhydrolysis of the precursor in the presence of hydrogen peroxide and a basic aqueous media generates a peroxycarboxylic acid.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: January 7, 1992
    Assignee: Lever Brothers Company, division of Conopco, Inc.
    Inventors: Stephen A. Madison, Pamela C. Lam