Patents by Inventor Leonora M. Ilardi

Leonora M. Ilardi 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).

  • Fabric conditioning molecules derived from glycerol and betaine
    Patent number: 5527477
    Abstract: Novel fabric conditioning compounds derived from glycerol and betaine are described. Compositions containing the compounds as well as the method of using the compositions is also described.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: June 18, 1996
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Leonora M. Ilardi, Stephen A. Madsion
  • Fabric conditioning molecules derived from glycerol and betaine
    Patent number: 5429755
    Abstract: Novel fabric conditioning compounds derived from glycerol and betaine are described. Compositions containing the compounds as well as the method of using the compositions is also described.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: July 4, 1995
    Assignee: Lever Brothers Company
    Inventors: Leonora M. Ilardi, Stephen A. Madsion
  • Sulfoethyl carbonate wetting agents and their use in detergent compositions
    Patent number: 5232633
    Abstract: Carbonated isethionate surfactants, compositions containing them and methods for their preparation are disclosed.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: August 3, 1993
    Assignee: Lever Brothers
    Inventors: Leonora M. Ilardi, Stephen Madison, Deanne Oppermann
  • Sulfur trioxide sulfonation of aromatic chloroformates
    Patent number: 4985561
    Abstract: A process is described for obtaining sulfophenyl quaternary ammonium or phosphonium substituted carbonic acid esters. These esters are prepared through sulfonation with sulfur trioxide of aromatic chloroformates followed by reaction of the sulfonated aromatic chloroformate with quaternary ammonium or phosphonium substituted alcohols. The resultant sulfophenyl esters are useful as bleach precursors in combination with peroxygen compounds such as sodium perborate or percarbonate.
    Type: Grant
    Filed: August 29, 1989
    Date of Patent: January 15, 1991
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Stephen A. Madison, Leonora M. Ilardi, Hans Cerfontain
  • Oleum sulfonation of phenyl quaternary alkyl ammonium and phosphonium carbonate esters
    Patent number: 4931563
    Abstract: A process is provided for obtaining sulfophenyl quarternary ammonium or phosphonium substituted carbonic acid esters. The important step in this process involves reacting a phenyl quaternary ammonium or phosphonium substituted carbonic ester with oleum that contains from 0.5 to 33% sulfur trioxide. Amounts in excess of 33% sulfur trioxide lead to increased reaction times and, eventually, unacceptable product conversons.
    Type: Grant
    Filed: November 16, 1988
    Date of Patent: June 5, 1990
    Assignee: Lever Brothers Company
    Inventors: Stephen A. Madison, Leonora M. Ilardi
  • Stably suspended 4,4'-sulfonylbisperoxybenzoic acid bleach in an aqueous liquid
    Patent number: 4822510
    Abstract: An aqueous liquid bleaching composition is described having a pH from 1 to 6.5 and comprising 4,4'-sulfonylbisperoxybenzoic acid stably suspended by a surfactant system.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: April 18, 1989
    Assignee: Lever Brothers Company
    Inventors: Stephen A. Madison, Leonora M. Ilardi, Patricia Liberati, Joshua Schwarz