Patents by Inventor Nancy Pergament

Nancy Pergament 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).

  • Non-cationic systems for dryer sheets
    Patent number: 6133226
    Abstract: Tumble dryer articles having a fabric conditioning composition providing anti-static softening, stain removal, stain guard and anti-active build-up benefits in an automatic clothes dryer are described. The composition comprises 3 to 80 wt. % of a nonionic surfactant having an HLB value of greater than 11, 3 to 50 wt. % of an anionic surfactant, 0 to 80 wt. % of a non-surfactant release aid and up to 25 wt. % of an aqueous ingredient provided the total amount of the nonionic and anionic surfactant is 20 wt. % or more and the ratio of the aqueous ingredient to the anionic surfactant is less than 2:1.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: October 17, 2000
    Assignee: Lever Brothers Company, division of Conopco, Inc.
    Inventors: Charles Nathaniel Knowlton, Nancy Pergament, Feng-Lung Gordon Hsu
  • Dye transfer inhibiting fabric softener compositions
    Patent number: 5964939
    Abstract: A concentrated aqueous fabric conditioning composition which both conditions and inhibits dye transfer is described. The composition includes a fabric conditioning active and a dye transfer inhibiting compound preferably polyvinyl pyrrolidone and a colorant. Methods of preparing and using the compositions are also described.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: October 12, 1999
    Assignee: Lever Brothers Company Division of Conopco, Inc.
    Inventors: Daniel Joseph Fox, Nancy Pergament, Feng-Lung Hsu