Patents by Inventor Ralph P. Overend

Ralph P. Overend 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: 5504259
    Abstract: A process for conversion of a feedstock selected from the group consisting of biomass and refuse derived fuel (RDF) to provide reformulated gasoline components comprising a substantial amount of materials selected from the group consisting of ethers, alcohols, or mixtures thereof, comprising: drying said feedstock; subjecting said dried feedstock to fast pyrolysis using a vortex reactor or other means; catalytically cracking vapors resulting from said pyrolysis using a zeolite catalyst; condensing any aromatic byproduct fraction; catalytically alkylating any benzene present in said vapors after condensation; catalytically oligomerizing any remaining ethylene and propylene to higher olefins; isomerizing said olefins to reactive iso-olefins; and catalytically reacting said iso-olefins with an alcohol to form ethers or with water to form alcohols.
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: April 2, 1996
    Assignee: Midwest Research Institute
    Inventors: James P. Diebold, John W. Scahill, Helena L. Chum, Robert J. Evans, Bahman Rejai, Richard L. Bain, Ralph P. Overend
  • Patent number: 5096566
    Abstract: A process is described for reducing the viscosity of heavy hydrocarbon oils which comprises separately heating a stream of heavy hydrocarbon oil and a stream of gas, mixing the hot gas and hot heavy hydrocarbon oil under pressure and immediately thereafter passing the heavy oil/gas mixture through a small nozzle or orifice such that a substantial pressure drop occurs across the orifice and the heavy oil/gas mixture is ejected from the orifice as a spray in the form of fine oil droplets entrained by highly turbulent gas flow. This spray is discharged into a confined reaction zone from which the oil of reduced viscosity is collected.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: March 17, 1992
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of Energy, Mines and Resources
    Inventors: William H. Dawson, Esteban Chornet, Ralph P. Overend, Amitabha Chakma, Jean-Pierre Lemonnier
  • Patent number: 4895577
    Abstract: A continuous, low severity process for dewatering peat. The process comprises the steps of flowing a slurry of peat through a reactor directly heated by the addition of live steam to heat the slurry to a temperature of between 160.degree. C. to 200.degree. C., subjecting the heated slurry to intense mechanical shear and mixing, and then, after a period of between 1 to 3 minutes, quenching the product.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: January 23, 1990
    Assignee: Canadian Patents and Development Limited/Societe Canadienne des Brevets et D'Exploitation Limitee
    Inventors: Esteban Chornet, Ralph P. Overend