Patents by Inventor Carlos A. Ricci

Carlos A. Ricci 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).

  • Liquid aqueous bleaching compositions
    Patent number: 6448214
    Abstract: The present invention relates to a low viscosity, aqueous liquid composition suitable for bleaching and pretreating soiled fabrics. Such composition contains a peroxygen bleach, an ethoxylated nonionic surfactant, a zwitterionic betaine surfactant and a viscosity reducing agent. In addition to improved cleaning performance, such composition provides satisfactory fabric and color safety when used as a laundry pretreater.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: September 10, 2002
    Assignee: The Proctor & Gamble Company
    Inventors: Valerio Del Duca, Carlo Ricci, Roberto Scaramella
  • Process for cleaning carpets comprising polyvinyl pyridine-N-oxide
    Patent number: 6407048
    Abstract: The present invention relates to a process of cleaning a carpet with a liquid composition comprising an anti-resoiling agent, said process comprising the steps of applying said composition to the surface of the carpet and leaving said composition to dry onto the carpet. The carpet cleaning composition according to the present invention provides carpet cleaning and/or carpet anti-resoiling henefits. The preferred anti-resoiling agent is poly(4-vinylpyridine-N-oxide).
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: June 18, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Gabriella Grippaudo, Carlo Ricci, Luca Sarcinelli
  • Process of cleaning carpets with a composition comprising peroxygen bleach
    Patent number: 6403547
    Abstract: The present invention relates to a process of cleaning a carpet with a liquid composition comprising a peroxygen bleach and an N-vinyl polymer, said process comprising the steps of applying said composition to the surface of the carpet and leaving said composition to dry onto the carpet. The carpet cleaning composition according to the present invention provides carpet cleaning and/or carpet anti-resoiling benefits.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: June 11, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Gabriella Grippaudo, Carlo Ricci, Luca Sarcinelli
  • Laundry bleaching compositions
    Patent number: 6242407
    Abstract: The present invention relates to a liquid composition suitable for bleaching fabrics comprising a peroxygen bleach, from 0.001% to 10% by weight of the total composition of propyl gallate, and from 0.001% to 10% by weight of an antioxidant. These compositions are suitable for bleaching soiled fabrics, and especially pretreating fabrics while being safe to the fabrics and colors.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: June 5, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Gabriella Bertacchi, Valerio Del Duca, Carlo Ricci, Roberto Scaramella
  • Liquid aqueous cleaning compositions
    Patent number: 6235699
    Abstract: Liquid compositions having a pH up to 7 comprise from 0.01% to 20% by weight of the total composition of a peroxygen bleach, from 0.001% to 30% by weight of the total composition of an ethoxylated nonionic surfactant, from 0.001% to 20% by weight of a zwitterionic betaine surfactant at a weight ratio of the ethoxylated nonionic surfactant to the zwitterionic betaine surfactant of from 0.01 to 20. These compositions are suitable to deliver improved stain removal performance and improved bleaching performance on various inanimate surfaces.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: May 22, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Valerio Del Duca, Dennis Gerard O'Sullivan, Carlo Ricci, Roberto Scaramella, Stefano Giunti, Sabina Antonioli
  • Laundry pretreatment peroxygen bleach with radical scavenger giving improved fabric/color safety
    Patent number: 6001794
    Abstract: The present invention relates to the use of a liquid composition comprising a peroxygen bleach and a radical scavenger or mixtures thereof, for pretreating soiled fabrics before said fabrics are washed, for reducing the loss of tensile strength in said fabrics and/or for reducing the color damage of said fabrics. The present invention further encompasses a liquid composition suitable for pretreating soiled fabrics, said composition comprising a peroxygen bleach and a radical scavenging system.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: December 14, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Valerio Del Duca, Carlo Ricci, Marina Trani
  • Granular laundry bleaching composition
    Patent number: 5702635
    Abstract: A particulate bleaching composition is disclosed which comprises particles of an alkali metal salt of percarbonate or mixtures thereof. The particles of the percarbonate bleach are coated and/or agglomerated with a stabilizing effective amount of a hydrophobic ester of citric acid or mixtures of the hydrophobic esters of citric acid.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: December 30, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Marina Trani, Carlo Ricci