Patents by Inventor Rodney Cravey

Rodney Cravey 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).

  • Polymeric imides as pour point depressant additives for oil compositions
    Publication number: 20070173419
    Abstract: The present invention generally relates to oil compositions, primarily to fuel oil and petroleum compositions produced there from susceptible to wax formation at low temperatures, to polymeric imides for use with such fuel oil compositions, and to methods for their manufacture.
    Type: Application
    Filed: February 8, 2007
    Publication date: July 26, 2007
    Applicant: Akzo Nobel N.V.
    Inventors: Stephen Mead, Rodney Cravey, Mohammad Rahman
  • Pour point depressant additives for oil compositions
    Publication number: 20070161519
    Abstract: The present invention generally relates to oil compositions, primarily to fidel oil and petroleum compositions produced there from susceptible to wax formation at low temperatures, to polymeric amides for use with such fuel oil compositions, and to methods for their manufacture.
    Type: Application
    Filed: April 5, 2005
    Publication date: July 12, 2007
    Applicant: Akzo Nobel N.V.
    Inventors: Rodney Cravey, Stephen Mead
  • Citric acid based emulsifiers for oilfield applications exhibiting low fluororescence
    Publication number: 20070066795
    Abstract: The present invention relates to a composition of citric acid based emulsifiers comprising polyamides for oilfield drilling applications that exhibit very low fluorescence, and to a process for their preparation.
    Type: Application
    Filed: May 19, 2004
    Publication date: March 22, 2007
    Inventor: Rodney Cravey
  • Alkoxylated alkyl substituted phenol sulfonates compounds and compositions, the preparation thereof and their use in various applications
    Patent number: 5049311
    Abstract: The present invention relates to novel compounds of the formula ##STR1## wherein R.sub.1 is an alkyl group, M.sup.+ is a cation, R.sub.2 is an alkylene oxide and n is an integer from 1 to 4. Surfactant compositions containing these novel compounds, the process of preparing these novel compounds as well as the methods of using these surfactant compounds in enhanced oil recovery, as emulsifiers, in emulsion polymerization, as hydrotropes, in foamed drilling fluids, as dye carriers, as textile detergents, as foaming agents for concrete formation and as fiber lubricants are also disclosed.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: September 17, 1991
    Assignee: Witco Corporation
    Inventors: Khalid Rasheed, Rodney Cravey, Paul D. Berger, Edwin O'Brien