Patents by Inventor Ricardo Alberto Icaza-Franceschi

Ricardo Alberto Icaza-Franceschi 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).

  • Hand wash laundry detergent compositions containing a combination of surfactants
    Patent number: 6165967
    Abstract: Laundry granular detergent compositions useful for hand wash and machine-assisted hand wash laundry operations. The composition contains 5% to 40% of a surfactant, the surfactant containing: 1) 60% to 95% primary anionic surfactant selected from alkylbenzene sulfonate, alkyl sulfate, and mixtures thereof; and 2) 2.5% to 18% alkyl ethoxy ether sulfate (AES) surfactant having an average of from about 1 to about 9 moles ethoxy per mole surfactant, the ratio of alkylbenzene sulfate and alkyl sulfate surfactant to alkyl ethoxy ether sulfate surfactant being within the range of from about 30:1 to about 4:1. The composition also preferably contains 2.0% to 5.5% hydroxyalkyl quaternary ammonium cationic surfactant, the ratio of alkylbenzene sulfonate and alkyl sulfate surfactant to such cationic surfactant being from 40:1 to 16:1.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: December 26, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Ricardo Alfredo Prada-Silvy, Francisco Ramon Figueroa, Ricardo Alberto Icaza-Franceschi, Ricardo Leal-Macias, Edgar Manuel Marin-Carrillo