Patents by Inventor Maria Rosa Rescio

Maria Rosa Rescio 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 neutral to alkaline hard-surface cleaning composition
    Patent number: 6718992
    Abstract: Neutral to basic compositions comprising surfactants other than amphoteric surfactants, copolymers of vinylpyrrolidone and an alkylenically unsaturated monomer, and a polysaccharide polymer. Also, employment of these compositions in processes for treating hard surfaces, providing a shine benefit to the hard surfaces, reducing limescale deposits and watermarks from hard surfaces, and for providing a “next-time” cleaning benefit to hard surfaces.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: April 13, 2004
    Inventors: Sergio Cardola, Panos Iakovides, Laura Orlandini, Maria Rosa Rescio
  • Enamel safe cleaning process
    Patent number: 6656897
    Abstract: The present invention describes a process of cleaning an enamel surface with a liquid acidic composition comprising an enamel safe acid wherein the pKa of said acid is 3.5 or higher, with the proviso that non mono-lower alkyl ethers or phenyl ethers or benzyl ethers of diethylene glycol, wherein the lower alkyl is of 2 to 6 carbon atoms, are present in said composition. The composition employed in said process is safe to enamel.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: December 2, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Sergio Cardola, Panos Iakovides, Laura Orlandini, Maria Rosa Rescio
  • Process of cleaning enamel surfaces
    Patent number: 6648983
    Abstract: A process of cleaning an enamel surface with a liquid acidic composition comprising an enamel safe buffering system, wherein said buffering system comprises a salt having an anion selected from the group consisting of hydroxide and carbonate; and a cation that has an ionic radius larger than 115 pm; with the proviso that no ethers of diethylene glycol are present in said composition.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: November 18, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Sergio Cardola, Panos Iakovides, Laura Orlandini, Maria Rosa Rescio
  • Liquid acidic hard surface cleaning composition
    Patent number: 6537957
    Abstract: The present invention describes liquid acidic cleaning compositions suitable for cleaning bathroom surfaces comprising a homo- or copolymer or vinylpyrrolidone, or a mixture thereof, a polysaccharide polymer, or a mixture thereof, an anionic surfactant, and an acid. These compositions deliver improved shine to the treated surface as well as improved next-time cleaning benefit on said surface.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: March 25, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Sergio Cardola, Panos Iakovides, Laura Orlandini, Maria Rosa Rescio