Patents by Inventor Rodney I. Barber

Rodney I. Barber 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: 6844300
    Abstract: Gear oils meeting GL-5 specifications are obtained by blending a base oil, a thermally stable phosphorus-containing anti-wear agent; and a metal-free sulfur-containing extreme-pressure agent; wherein the thermally stable phosphorus-containing anti-wear agent is present in an amount sufficient to provide from 100 to 350 ppm phosphorus to the formulated gear oil and wherein the metal-free sulfur-containing extreme-pressure agent is present in an amount sufficient to provide at least 10,000 ppm sulfur to the formulated gear oil and wherein the formulated gear oil contains 350 ppm of phosphorus or less.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: January 18, 2005
    Assignee: Ethyl Corporation
    Inventors: Jeffrey L. Milner, Roger M. Sheets, David R. Ellis, Rodney I. Barber
  • Publication number: 20020160922
    Abstract: Gear oils meeting GL-5 specifications are obtained by blending a base oil, a thermally stable phosphorus-containing anti-wear agent; and a metal-free sulfur-containing extreme-pressure agent; wherein the thermally stable phosphorus-containing anti-wear agent is present in an amount sufficient to provide from 100 to 350 ppm phosphorus to the formulated gear oil and wherein the metal-free sulfur-containing extreme-pressure agent is present in an amount sufficient to provide at least 10,000 ppm sulfur to the formulated gear oil and wherein the formulated gear oil contains 350 ppm of phosphorus or less.
    Type: Application
    Filed: February 15, 2002
    Publication date: October 31, 2002
    Inventors: Jeffrey L. Milner, Roger M. Sheets, David R. Ellis, Rodney I. Barber
  • Patent number: 6184186
    Abstract: Use of at least one friction modifier to reduce micropitting of a metal surface, which comprises lubricating the metal surface with a lubricant composition comprising the at least one friction modifier, wherein the at least one friction modifier is selected such that micropitting is reduced when the metal surface is so lubricated.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: February 6, 2001
    Assignee: Ethyl Petroleum Additives, Ltd
    Inventors: Helen T. Ryan, Rodney I. Barber, Craig R. Paterson
  • Patent number: 5342531
    Abstract: A lubricant composition comprising a major proportion of polyalkylene glycol of lubricating viscosity and a minor proportion dissolved therein of (a) at least one sulphur-containing antiwear or extreme pressure agent, (b) at least one amine salt of at least one partially esterified monothiophosphoric acid, and (c) at least one amine salt of at least one partially esterified phosphoric acid. Such compositions have improved resistance to wear, oxidative degradation and metallic corrosion.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: August 30, 1994
    Assignee: Ethyl Petroleum Additives Limited
    Inventors: David K. Walters, Rodney I. Barber
  • Patent number: 5126064
    Abstract: Lubricant compositions, especially suitable for limited slip differentials, containing sulphur-containing extreme pressure or anti-wear agents, are improved by incorporation of a substituted succinimide friction modifier. The resulting compositions reduce the level of noise produced during operation of the differential.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: June 30, 1992
    Assignee: Ethyl Petroleum Additives, Ltd.
    Inventors: Rodney I. Barber, Charles J. Dain, David K. Walters
  • Patent number: 4305834
    Abstract: A lubricating oil composition for use in the crankcase of an internal combustion engine, having improved resistance to the formation of emulsion-sludge in the area under the engine rocker cover, which contains the combination of an oxyalkylated alkylphenol-formaldehyde condensation product and tetra polyoxyethylene polyoxypropylene derivative of ethylene diamine.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: December 15, 1981
    Assignee: Ethyl Corporation
    Inventors: Rodney I. Barber, David K. Walters
  • Patent number: 4305835
    Abstract: A lubricating oil composition for use in the crankcase of an internal combustion engine, having improved resistance to the formation of emulsion-sludge in the area under the engine rocker cover, which contains the combination of an oxyalkylated alkylphenol-formaldehyde condensation product and an oxyalkylated trimethylolalkane.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: December 15, 1981
    Assignee: Ethyl Corporation
    Inventors: Rodney I. Barber, David K. Walters