Patents by Inventor Gregory Stephen Caravajal

Gregory Stephen Caravajal 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).

  • Cleaning compositions containing bleach and stability-enhanced enzymes
    Patent number: 5904161
    Abstract: Cleaning compositions, particularly automatic dishwashing detergent compositions, comprising a stability-enhanced amylase and bleach-improving materials are provided. More specifically, the invention relates to granular automatic dishwashing detergents which provide enhanced cleaning/bleaching benefits. The automatic dishwashing compositions comprise stability-enhanced amylase enzymes and one or more bleach-improving compounds, such as organic peroxides, quaternary substituted bleach activators, quaternary substituted peracids and manganese or iron bleach catalysts.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: May 18, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Saroj Rai, William Michael Scheper, Lucille Florence Taylor, Gregory Stephen Caravajal, James Charles Theophile Roger Burckett-St. Laurent, Kakumanu Pramod
  • Monomeric rich silicate system in automatic dishwashing composition with improved glass etching
    Patent number: 5703027
    Abstract: Automatic dishwashing detergent compositions comprising a certain combination of metasilicate with other silicate (polymeric) components are disclosed. Particularly preferred compositions also comprise low foaming surfactant and detergency builders.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: December 30, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Gregory Stephen Caravajal, Janet Layne Marshall
  • Perfume delivery system comprising zeolites
    Patent number: 5691303
    Abstract: Granular detergent compositions comprise conventional ingredients and a perfume delivery system which comprises Type X or Type Y Zeolites having a perfume releasably adsorbed within their pores, and a barrier matrix comprising a fluid polyol or diol which is insoluble with the perfume and a solid polyol containing more than three hydroxyl moieties. Methods of depositing said perfume onto fabric surfaces are disclosed.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: November 25, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Robert Ya-Lin Pan, Jing-Feng You, Gregory Stephen Caravajal, Sharon Anne Graves, William Richard Mueller