Patents by Inventor William R. Ruhe, Jr.

William R. Ruhe, Jr. 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: 8455568
    Abstract: A post-treated polymeric dispersant which comprises reacting (I) a post-treating agent selected from a cyclic carbonate, a linear mono-carbonate, a linear poly-carbonate, an aromatic polycarboxylic acid or an aromatic polycarboxylic anhydride or an aromatic polycarboxylic acid ester and (II) an oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one ether compound and with at least one aliphatic compound capable of reacting with at least one monocarboxylic acid or ester thereof, or dicarboxylic acid, anhydride or ester thereof.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: June 4, 2013
    Assignee: Chevron Oronite Company LLC
    Inventor: William R. Ruhe, Jr.
  • Patent number: 8183189
    Abstract: The invention is directed to oil soluble additive compositions, lubricating oil compositions derived from a process for preparing a sulfurized oil soluble molybdenum complex having reduced active sulfur comprising: reacting an acidic molybdenum compound with an amide derived from a carboxylic acid component an polyamine component in a ratio from 2:1 to 1:1; there after sulfurizing to provide a sulfurized oil soluble molybdenum which is subsequently treated with at least one compound capable of reacting with the active sulfur of step b).
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: May 22, 2012
    Assignee: Chevron Oronite Company LLC
    Inventors: Qunlai Chen, Man Hon Tsang, Gaurav Bhalla, William R. Ruhe, Jr.
  • Patent number: 8076275
    Abstract: Antioxidant additives for lubricating oils are prepared by reacting an acidic molybdenum compound or salt thereof and a basic nitrogen compound where the temperature of the process does not exceed 120° C., resulting in a product color that is light in intensity.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: December 13, 2011
    Assignee: Chevron Oronite Company LLC
    Inventors: William R. Ruhe, Jr., Anatoli Onopchenko
  • Patent number: 8067347
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one ether compound, with at least one aliphatic compound, and with at least one aromatic compound.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: November 29, 2011
    Assignee: Chevron Oronite Company LLC
    Inventors: William R. Ruhe, Jr., Casey D. Stokes
  • Patent number: 7928044
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one ether compound and with at least one aromatic compound.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: April 19, 2011
    Assignee: Chevron Oronite Company LLC
    Inventors: Casey D. Stokes, William R. Ruhe, Jr.
  • Publication number: 20110077180
    Abstract: The invention is directed to oil soluble additive compositions, lubricating oil compositions derived from a process for preparing a sulfurized oil soluble molybdenum complex having reduced active sulfur comprising: reacting an acidic molybdenum compound with an amide derived from a carboxylic acid component an polyamine component in a ratio from 2:1 to 1:1; there after sulfurizing to provide a sulfurized oil soluble molybdenum which is subsequently treated with at least one compound capable of reacting with the active sulfur of step b).
    Type: Application
    Filed: September 30, 2009
    Publication date: March 31, 2011
    Inventors: Qunlai Chen, Man Hon Tsang, Gaurav Bhalla, William R. Ruhe, JR.
  • Patent number: 7858566
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one polyether aromatic compound, and with at least one polyether aliphatic compound.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: December 28, 2010
    Assignee: Chevron Oronite Company LLC
    Inventors: William R. Ruhe, Jr., Casey D. Stokes
  • Patent number: 7820605
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one polyether aromatic compound.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: October 26, 2010
    Assignee: Chevron Oronite Company LLC
    Inventors: Casey D. Stokes, William R. Ruhe, Jr.
  • Patent number: 7820604
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one polyether aliphatic amine compound.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: October 26, 2010
    Assignee: Chevron Oronite Company LLC
    Inventors: William R. Ruhe, Jr., Casey D. Stokes
  • Patent number: 7816309
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one ether compound and with at least one aliphatic compound capable of reacting with at least one monocarboxylic acid or ester thereof, or dicarboxylic acid, anhydride or ester thereof.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: October 19, 2010
    Assignee: Chevron Oronite Company LLC
    Inventors: Casey D. Stokes, William R. Ruhe, Jr.
  • Patent number: 7745542
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one ether compound and with at least one aromatic amine.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: June 29, 2010
    Assignee: Chevron Oronite Company LLC
    Inventors: William R. Ruhe, Jr., Casey D. Stokes, James A. Gray
  • Patent number: 7745541
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one ether compound and with at least one aromatic amine.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: June 29, 2010
    Assignee: Chevron Oronite Company LLC
    Inventors: William R. Ruhe, Jr., Casey D. Stokes
  • Publication number: 20100160198
    Abstract: A lubricating oil composition comprising a major amount of base oil of lubricating viscosity and a minor amount of an additive comprising the reaction product obtained by reacting a cyclic carbonate and a hydrocarbyl amine having the formula: R1R2NH in which R1 is hydrogen, or a hydrocarbyl group containing 1 to 40 carbon atoms, and R2 is a hydrocarbyl group containing 1 to 40 carbon atoms.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Inventor: William R. Ruhe, JR.
  • Publication number: 20100160192
    Abstract: An oil-soluble lubricating oil additive composition prepared by a process which comprises reacting a succinimide, succinamide or mixtures thereof with a first post-treating agent, thereby producing an initial post-treated product which is reacted with a second post-treating agent.
    Type: Application
    Filed: December 22, 2008
    Publication date: June 24, 2010
    Inventor: William R. Ruhe, JR.
  • Publication number: 20090270531
    Abstract: A post-treated polymeric dispersant which comprises reacting (I) a post-treating agent selected from a cyclic carbonate, a linear mono-carbonate, a linear poly-carbonate, an aromatic polycarboxylic acid or an aromatic polycarboxylic anhydride or an aromatic polycarboxylic acid ester and (II) an oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one ether compound and with at least one aliphatic compound capable of reacting with at least one monocarboxylic acid or ester thereof, or dicarboxylic acid, anhydride or ester thereof.
    Type: Application
    Filed: April 25, 2008
    Publication date: October 29, 2009
    Inventor: William R. Ruhe, JR.
  • Publication number: 20080113888
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one polyether aromatic compound, and with at least one polyether aliphatic compound.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 15, 2008
    Inventors: William R. Ruhe, Jr., Casey D. Stokes
  • Patent number: 7091306
    Abstract: The present invention relates to an improved process for preparing polyalkenylsuccinimides having a sediment level less than 0.1 vol % comprising the steps of: (a) preparing a polyalkenyl derivative of an unsaturated acidic reagent by (i) reacting a polyalkylene with an unsaturated acidic reagent in the absence of a strong acid until at least 25% of the polyalkylene is converted to a polyalkenyl derivative of an unsaturated acidic reagent; (ii) continuing the reaction with an excess of the unsaturated acidic reagent in the presence of a strong acid to convert at least some of the unreacted polyalkylene to additional polyalkenyl derivative of an unsaturated acidic reagent; and (iii) removing the unreacted unsaturated acidic reagent; (b) reacting the unfiltered product of step (a) with a polyamine having at least one basic nitrogen atom; (c) diluting the product of step (b); and (d) subsequently filtering the polyalkenylsuccinimide product.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: August 15, 2006
    Assignees: Chevron Oronite Company LLC, Chevron Oronite S. A.
    Inventors: Mohammed Heddadj, William R. Ruhe, Jr., Gilles P. Sinquin
  • Patent number: 6962896
    Abstract: Antioxidant additives for lubricating oils are prepared by reacting an acidic molybdenum compound or salt thereof and a basic nitrogen compound where the temperature of the process does not exceed 120° C., resulting in a product color that is light in intensity.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: November 8, 2005
    Assignee: Chevron Oronite Company LLC
    Inventors: William R. Ruhe, Jr., Anatoli Onopchenko
  • Patent number: 6958409
    Abstract: A process for the manufacture of a low sediment overbased metal dithiophosphate composition is disclosed. The process uses delayed addition of a C1 to C5 mono-carboxylic acid promoter during the neutralization of a primary dialkyl dithiophosphoric acid. The process results in reducing crude sediment whereby the resulting overbased metal dithiophosphate may need not undergo additional filtration steps prior to its intended use.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: October 25, 2005
    Assignee: Chevron Oronite Company LLC
    Inventor: William R. Ruhe, Jr.
  • Patent number: 6906011
    Abstract: This invention is directed to a new low molecular weight copolymer (The PIB/UAR copolymer) that may be prepared by reacting a low molecular weight polyisobutene (PIB) having less than about 32 carbon atoms with an unsaturated acidic reagent in the presence of a free radical initiator. No chain transfer agent is required to prepare the low molecular weight PIB/UAR copolymer. The PIB/UAR copolymer may be useful as is, or as an intermediate for (1) polysuccinimides, (2) detergents or dispersants for lube oil or fuels, (3) pour point depressants and (4) surface sizing agents for paper. The PIB/UAR copolymer may be used by itself or as the ester, amide, imide or metal salt derivative of the PIB/UAR copolymer. The PIB/UAR copolymer may be liquid at ambient temperature.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: June 14, 2005
    Assignee: Chevron Oronite Company LLC
    Inventors: James J. Harrison, William R. Ruhe, Jr., Kenneth D. Nelson