Patents by Inventor Paul E. Correa

Paul E. Correa 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).

  • Stabilized proteinaceous protease inhibitors and variants thereof
    Patent number: 6579698
    Abstract: Protein protease inhibitors and their variants have increased stability in detergent composition. The genes encoding such variants are provided. The variants are used in cleaning compositions.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: June 17, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Paul E. Correa, Charles Winston Saunders, Michael Laskowski, Jr.
  • Oxidation of tertiary amines using octacyanomolybdate or iron (III) salts as catalysts
    Patent number: 4565891
    Abstract: A process for the catalytic oxidation of nonaromatic tertiary amines to the respective amine oxides is disclosed. An aqueous solvent system containing the tertiary amine is formed with an initial pH about equal to or greater than the pKa of the tertiary amine. This aqueous system is contacted with gaseous molecular oxygen at an oxygen partial pressure of at least about 50 psi and a temperature of at least about 80.degree. C. in the presence of certain octacyanomolybdate or iron (III) salts. The resulting oxidation converts the tertiary amine to the respective amine oxide in good yield.
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: January 21, 1986
    Assignee: The Procter & Gamble Company
    Inventors: Paul E. Correa, Dennis P. Riley