Patents by Inventor Dennis P. Riley

Dennis P. Riley 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).

  • Patent number: 4851131
    Abstract: Waste streams from N-phosphonomethylglycine facilities are treated to remove by-products and unreacted raw materials by heating the waste stream in the presence of a transition metal catalyst and contacting the waste stream with an oxygen-containing gas.
    Type: Grant
    Filed: December 31, 1987
    Date of Patent: July 25, 1989
    Assignee: Monsanto Company
    Inventors: Raymond C. Grabiak, Dennis P. Riley
  • Patent number: 4590007
    Abstract: Fluronaphthalene chromium tricarbonyls useful as hydrogenation catalysts are disclosed. Compositions suitable for hydrogenation comprise glycerides, nonglyceride esters, or mixtures thereof having polyunsaturated fatty acid residues, in particular polyunsaturated vegetable oils and those containing methyl linoleate. After being placed in a reactor having an inert inner surface, the polyunsaturated fatty acid residue-containing composition is contacted with hydrogen in the presence of the fluoronaphthalene chromium tricarbonyl to effect hydrogenation of the polyunsaturated fatty acid residues.
    Type: Grant
    Filed: July 20, 1984
    Date of Patent: May 20, 1986
    Assignee: The Procter & Gamble Company
    Inventors: James R. Tucker, Dennis P. Riley
  • Patent number: 4571391
    Abstract: Chromium(III) tris-acetylacetonate, a coordinatively saturated, stable chromium(III) compound provides a dietary chromium supplement for humans and lower animals and is a useful hypoglycemic pharmaceutical agent for treating diabetes, especially when used in conjunction with insulin therapy.
    Type: Grant
    Filed: November 7, 1980
    Date of Patent: February 18, 1986
    Assignee: The Procter & Gamble Company
    Inventors: Dennis P. Riley, Mark M. Anderson, John T. Rotruck
  • 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
  • Patent number: 4440936
    Abstract: The chiral phosphine ligand (R)-1,2-bis(diphenylphosphino)-1-cyclohexylethane, when complexed to Rh(I), functions as a superior chiral hydrogenation catalyst. The chiral phosphine ligand is more stereochemically rigid than previous compounds; consequently, virtually optically pure materials can be produced from the chiral hydrogenation of prochiral compounds using the catalyst of this invention. This catalyst is especially useful in the chiral hydrogenation of alpha-acylamido acrylic acids.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: April 3, 1984
    Assignee: The Procter & Gamble Company
    Inventor: Dennis P. Riley
  • Patent number: 4397787
    Abstract: Rhodium (1) complexes containing the chiral phosphine ligand (R)-1,2-bis(diphenylphosphino)-1-cyclohexylethane which are useful as chiral hydrogenation catalysts. These catalysts are especially useful in the chiral hydrogenation of alpha-acylamido acrylic acids.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: August 9, 1983
    Assignee: The Procter & Gamble Company
    Inventor: Dennis P. Riley
  • Patent number: 4331818
    Abstract: The chiral phosphine ligand (R)-1,2-bis(diphenyl-phosphino)-1-cyclohexylethane, when complexed to Rh(I), functions as a superior chiral hydrogenation catalyst. The chiral phosphine ligand is more stereochemically rigid than previous compounds; consequently, virtually optically pure materials can be produced from the chiral hydrogenation of prochiral compounds using the catalyst of this invention. This catalyst is especially useful in the chiral hydrogenation of alpha-acylamido acrylic acids.
    Type: Grant
    Filed: March 19, 1980
    Date of Patent: May 25, 1982
    Assignee: The Procter & Gamble Company
    Inventor: Dennis P. Riley