Patents by Inventor Mayela Rivero

Mayela Rivero 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).

  • Conduit having hydrophilic and oleophobic inner surfaces for oil transportation
    Patent number: 5385175
    Abstract: A conduit for transporting an oil and water mixture wherein the conduit has an inner surface is substantially hydrophilic and oleophobic. The surface is characterized by a water absorption capacity of greater than or equal to about 8% by weight, and by a contact angle with the oil of greater than or equal to about 120.degree.. The inner surface material may be a silica containing concrete composition or a polymeric coating composition. A conduit having such an inner surface is wetted by water so as to inhibit adhesion of oil to the conduit.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: January 31, 1995
    Assignee: Intevep, S.A.
    Inventors: Mayela Rivero, Valmore Rodriquez, Dan Joseph, Emilio Guevara, Nelson Carabano
  • Viscous hydrocarbon-in-water emulsions
    Patent number: 4923483
    Abstract: Methods for the formation, processing, transportation and end use of a hydrocarbon-in-water emulsion.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: May 8, 1990
    Assignee: Intevep, S.A.
    Inventors: Ignacio A. Layrisse R., Domingo R. Polanco, Hercilio Rivas, Euler Jimenez G., Lirio Quintero, Jose Salazar P., Mayela Rivero, Antonio Cardenas, Maria L. Chirinos, Daysi Rojas, Humberto Marquez
  • Process for the production and burning of a natural-emulsified liquid fuel
    Patent number: 4801304
    Abstract: A process for the preparation of a natural liquid fuel and, more particularly, a process that allows a high sulfur natural fuel to be converted into energy by combustion with a substantial reduction in sulfur oxide emissions.
    Type: Grant
    Filed: June 17, 1986
    Date of Patent: January 31, 1989
    Assignee: Intevep, S.A.
    Inventors: Domingo R. Polanco, Ignacio Layrisse, Hercilio Rivas, G. Euler Jimenez, Lirio Q. de Paz, Jose P. Salazar, Mayela Rivero, Emilio Guevara, Maria L. Chirinos
  • Viscous hydrocarbon-in-water emulsions
    Patent number: 4795478
    Abstract: Method for the formation, processing, transportation and end use of a hydrocarbon-in-water emulsion.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: January 3, 1989
    Assignee: Intevep, S.A.
    Inventors: Ignacio A. Layrisse R., Domingo R. Polanco, Hercilio Rivas, Euler Jimenez G., Lirio Quintero, Jose Salazar P., Mayela Rivero, Antonio Cardenas, Maria L. Chirinos, Daysi Rojas, Humberto Marquez