The Heavy Metal Is Molybdenum, A Rare Earth Metal, Gold, Silver, Or Mercury Patents (Class 508/379)
  • Publication number: 20140309150
    Abstract: A lubricant composition and a method of lubricating off-road vehicles and/or machinery. The lubricant composition includes (i) a base oil, (ii) at least one ashless component (A) having the structure P(?S)(SR1)(OR2)(OR3), wherein R1, R2 and R3 are independently selected form the group consisting of alkyl, aryl, alkylaryl, cycloalkyl, alcohol, carboxylic acid and ester having 1 to 24 carbon atoms; and (iii) at least one component (B) being a metal dialkyl dithio phosphate salt. The total of ashless components (A) provides to the lubricant composition from 0.010 to 0.080 wt. % phosphorus based on the total weight of the lubricant composition and the total of components (B) provides to the lubricant composition from 0.010 to 0.080 wt. % phosphorus based on the total weight of the lubricant composition.
    Type: Application
    Filed: April 11, 2013
    Publication date: October 16, 2014
    Applicant: Afton Chemical Corporation
    Inventor: Jonathan W. BENDER
  • Patent number: 8664442
    Abstract: A dialkylanilino-cyclohexane compound useful as an antioxidant has the following formula I or formula II: wherein Ar1 and Ar2 can be the same or different and each is an alkylaromatic group; each of R1, R2, R3, and R4 is independently selected from hydrogen or CR7R8; each of R5, R6, and R7 is independently selected from hydrogen and a substituted or unsubstituted C1 to C32 hydrocarbyl group; and each R8 is independently selected from hydrogen and a C1 to C2 alkyl group, provided that when, each of R1 and R2 is CR7R8 and each such R8 is other than hydrogen, R1 and R2 may be joined to form a five or six-membered ring, and provided further that when, each of R3 and R4 is an adjacent CR7R8 and each such R8 is other than hydrogen, R3 and R4 may be joined to form a five or six-membered ring.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: March 4, 2014
    Assignee: Chemtura Corporation
    Inventor: Theodore E. Nalesnik
  • Publication number: 20140045733
    Abstract: The grease composition for a clean environment includes, a base oil, a thickener and a extreme-pressure agent, in which a kinetic viscosity of the base oil at 40° C. is 100˜300 mm2/s, the thickener comprising a lithium complex soap, a content of the thickener is 10˜40 mass % with respect to the total amount of the grease composition.
    Type: Application
    Filed: April 11, 2012
    Publication date: February 13, 2014
    Applicants: IDEMITSU KOSAN CO., LTD., THK CO., LTD.
    Inventors: Akira Nogami, Terumoto Hayami, Hiroshi Sampei, Yukitoshi Fujinami, Kouji Takane
  • Publication number: 20130244915
    Abstract: Combining a metal based friction modifier, such as a molybdenum dialkyldithiocarbamate, and certain esters of hydroxy carboxylic acids, such as short chain alkyl esters of citric or tartaric acid, e.g., tributyl citrate, has a synergistic effect on lowering the friction coefficient of lubricating oils allowing one to reduce the amount of metal based friction modifier needed to adequately formulate a lubricant with low friction characteristics.
    Type: Application
    Filed: February 28, 2013
    Publication date: September 19, 2013
    Applicant: Chemtura Corporation
    Inventors: Frank J. DeBlase, Venkatramanan K. Madabusi, Susan Ferrarotti, Faith Gaenzler, Cyril A. Migdal, Gerard Mulqueen
  • Patent number: 8293689
    Abstract: The invention provides a lubricating composition containing an oil of lubricating viscosity and polymer with pendant groups. The invention further provides for a method of controlling viscosity index by supplying to an oil of lubricating viscosity the polymer with pendant groups.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: October 23, 2012
    Assignee: The Lubrizol Corporation
    Inventors: Bryan A. Grisso, Mark R. Baker, Daniel C. Visger, Marina Baum, Barton J. Schober, Calvin A. James
  • Publication number: 20120258897
    Abstract: The present invention provides a cylinder lubricating oil composition for a crosshead-type diesel engine, which is improved in oxidation stability and anti-scuffing properties besides the properties of the conventional cylinder lubricating oil composition and comprises a base oil having an aromatic content of 8.5 percent by mass or more and on the basis of the total mass of the composition (A) an alkaline earth metal phenate in an amount of 0.005 mole/kg or more on the basis of phenate soap content, (B) an aminic antioxidant in an amount of 0.1 to 5 percent by mass and (C) an oil-soluble molybdenum compound in an amount of 30 to 500 ppm by mass on the basis of molybdenum and having a base number of 20 to 100 mgKOH/g and a 100° C. kinematic viscosity of 12.6 mm2/s or higher.
    Type: Application
    Filed: October 8, 2010
    Publication date: October 11, 2012
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Shigeki Takeshima, Naozumi Arimoto
  • Patent number: 8178478
    Abstract: An internal combustion engine crankcase lubricating oil composition is disclosed. The crankcase lubricating oil composition has a TBN no greater than 6 and contains the following additives: (B1) a metal detergent system having a metal ratio no greater than 3, as the sole detergent system; (B2) an organic ashless friction modifier; (B3) an oil-soluble molybdenum friction modifier; and (B4) a metal dihydrocarbyl dithiophosphate.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: May 15, 2012
    Assignee: Infineum International Limited
    Inventors: Brian Lawrence, Christopher Locke
  • Publication number: 20120021956
    Abstract: The invention provides a lubricating composition containing a ?-amino compound. The invention further relates to a method of lubricating an internal combustion engine by lubricating the engine with the lubricating composition. The invention further relates to the use of the ?-amino carbonyl compound as copper corrosion inhibitors, friction control agents, antiwear and/or extreme pressure agents.
    Type: Application
    Filed: February 5, 2010
    Publication date: January 26, 2012
    Applicant: The Lubrizol Corporation
    Inventors: Matthew D. Gieselman, Jody A. Kocsis
  • Patent number: 8101558
    Abstract: A composition containing an oil of lubricating viscosity in a concentrate-forming or major amount; and, as an additive component, an oil-soluble or oil dispersible mononuclear molybdenum compound having a molybdenum atom having bonded thereto one or more diazenide ligands and one or more hydrocarbyl group-carrying ligands, other than diazenide ligands, the hydrocarbyl groups conferring oil-solubility or oil-dispersibility on the molybdenum compound.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: January 24, 2012
    Assignee: Infineum International Limited
    Inventors: Benjamin R. Elvidge, Aleka Hinni, Jonathan Dilworth
  • Patent number: 8093190
    Abstract: An antioxidant lubricant composition has at least 50 wt % of a lubricating base oil and an oil-soluble metal compound providing between 1 and 2,000 parts per million of metal to the lubricant composition, the metal compound being chosen from the group consisting of molybdenum, tungsten titanium and boron compounds, and an oil-soluble hindered amine providing between about 0.001 and about 2 wt % of oil-soluble hindered amine to the lubricant composition, and optionally, an oil-soluble diarylamine providing between 0.001 and about 2 wt % of oil-soluble diarylamine to the lubricant composition.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: January 10, 2012
    Assignee: R.T. Vanderbilt Company, Inc.
    Inventors: Kevin J. Chase, John M DeMassa, Brian Stunkel, Glenn A. Mazzamaro, Steven G. Donnelly
  • Patent number: 8071801
    Abstract: Provided is a phosphorus molybdenum amine compound, represented by the following general formula (I). where R1 to R6 each independently represent a hydrogen atom or a hydrocarbon group and p represents a number of 1 to 5, provided that all of R1 to R6 are can not all be hydrogen atoms at the same time and the phosphorus molybdenum compound is obtained by reducing a hexavalent molybdenum compound with a reducing agent, and then reacting the resulting with an acidic phosphate after neutralization with a mineral acid.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: December 6, 2011
    Assignee: Adeka Corporation
    Inventors: Yukio Tatsumi, Kazuhiro Umehara, Kenji Yamamoto
  • Patent number: 8030257
    Abstract: The present invention is directed to lubricating oils of improved antioxidancy comprising a base oil selected from the group consisting of mineral oils, synthetic oils and mixtures thereof containing an effective amount of one or more organometallic compound and/or coordination complex selected from the group consisting of (a) a metal or metal cation with more than one oxidation state, above the ground state, and two or more anions, (b) a metal or metal cation with more than one oxidation state above the ground state and one or more bidentate or tridentate ligands, (c) a metal or metal cation with more than one oxidation state above the ground slate, and one or more amines and one or more ligands, and (d) mixtures thereof, to a method for improving the antioxidancy of formulated lubricating oil compositions by the addition thereto of an effective amount of the aforementioned organometallic compound, and/or coordination complex, and to an additive concentrate containing the aforementioned organometallic compou
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: October 4, 2011
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Jacob Joseph Habeeb, Steven Paul Rucker
  • Patent number: 8012916
    Abstract: A lubricating oil additive capable of providing an antioxidant which enables a lubricating oil composition to have long drain intervals, while reducing specific components such as metals and phosphorus atoms, and a lubricating oil composition containing the lubricating oil additive are provided. A phosphorus molybdenum compound represented by the following general formula (1) where R1, R2, and R3 each independently represent a hydrocarbon group having 1 to 20 carbon atoms is also provided.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: September 6, 2011
    Assignee: Adeka Corporation
    Inventors: Yukiya Moriizumi, Kazuhiro Umehara, Yukio Tatsumi
  • Patent number: 7989407
    Abstract: The present invention is directed to lubricating oils exhibiting improved resistance to oxidation and deposit/sludge formation comprising a lubricant base oil and an effective amount of a catalytic antioxidant comprising one or more polymetal organometallic compound, to a method for improving the antioxidancy and the resistance to deposit/sludge formation of formulated lubricating oil compositions by the addition thereto of an effective amount of the aforementioned polymetal organometallic compound, and to an additive concentrate containing the aforementioned polymetal organometallic compound.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: August 2, 2011
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Jacob J. Habeeb, Steven P. Rucker, Michael E. Landis, Abhimanyu O. Patil
  • Patent number: 7989406
    Abstract: An additive to a fuel oil for a Diesel engine having a Diesel particulate filter (DPF), which comprises a molybdenum compound and having the function of improving the combustion property of a particulate matter (PM) trapped with DPF; a fuel oil comprising the additive; a lubricating oil composition for a Diesel engine having DPF, which has a sulfated ash content of 1.0% by weight or smaller, a sulfur content of 0.3% by weight or smaller and a molybdenum content of 100 ppm or greater; and DPF for removing PM in combustion gas discharged from a Diesel engine vehicle by trapping and burning PM, DPF comprising a filter supporting a molybdenum compound. The combustion property of PM trapped with the filter of DPF is improved, PM is burned at a low temperature with stability, the efficiency of removal of PM is improved and the life of DPF is increased.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: August 2, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Tadashi Katafuchi
  • Patent number: 7875579
    Abstract: An antioxidant lubricant composition has at least 50 wt % of a lubricating base oil and an oil-soluble metal compound providing between 1 and 2,000 parts per million of metal to the lubricant composition, the metal compound being chosen from the group consisting of molybdenum, tungsten titanium and boron compounds, and an oil-soluble hindered amine providing between about 0.001 and about 2 wt % of oil-soluble hindered amine to the lubricant composition, and optionally, an oil-soluble diarylamine providing between 0.001 and about 2 wt % of oil-soluble diarylamine to the lubricant composition.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: January 25, 2011
    Assignee: R.T. Vanderbilt Company, Inc.
    Inventors: Kevin J. Chase, John M. DeMassa, Brian W. Stunkel, Glenn A. Mazzamaro, Steven G. Donnelly
  • Patent number: 7838472
    Abstract: An oil composition for cutting and grinding by minimal quantity lubrication system and for sliding surface according to the present invention comprises an ester and a sulfur compound and/or a phosphorus compound.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: November 23, 2010
    Assignee: Nippon Oil Corporation
    Inventors: Hideo Yokota, Masanori Ibi, Satoshi Suda
  • Patent number: 7790659
    Abstract: Disclosed are lubricating oil compositions excellent in friction reducing effect and long drain properties and particularly suitable for internal combustion engines, which comprise a lubricating base oil, a specific phosphorus compound in an amount of 0.005 to 0.5 percent by mass in terms of phosphorus based on the total mass of the composition, and at least one additive selected from the group consisting of (C) metallic detergents, (D) ashless dispersants, and (E) anti-oxidants, and further contains (F) a sulfur-containing organic molybdenum complex and (G) an ashless friction modifier and which satisfy prescribed requirements and have a sulfated ash content not exceeding a specified level.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: September 7, 2010
    Assignee: Nippon Oil Corporation
    Inventors: Kazuhiro Yagishita, Akira Yaguchi
  • Publication number: 20100062955
    Abstract: A dialkylanilino-cyclohexane compound useful as an antioxidant has the following formula I or formula II: wherein Ar1 and Ar2 can be the same or different and each is an alkylaromatic group; each of R1, R2, R3, and R4 is independently selected from hydrogen or CR7R8; each of R5, R6, and R7 is independently selected from hydrogen and a substituted or unsubstituted C1 to C32 hydrocarbyl group; and each R8 is independently selected from hydrogen and a C1 to C2 alkyl group, provided that when, each of R1 and R2 is CR7R8 and each such R8 is other than hydrogen, R1 and R2 may be joined to form a five or six-membered ring, and provided further that when, each of R3 and R4 is an adjacent CR7R8 and each such R8 is other than hydrogen, R3 and R4 may be joined to form a five or six-membered ring.
    Type: Application
    Filed: September 9, 2008
    Publication date: March 11, 2010
    Inventor: Theodore E. Nalesnik
  • Publication number: 20090312210
    Abstract: The invention provides a lubricating composition containing an oil of lubricating viscosity and polymer with pendant groups. The invention further provides for a method of controlling viscosity index by supplying to an oil of lubricating viscosity the polymer with pendant groups.
    Type: Application
    Filed: May 7, 2007
    Publication date: December 17, 2009
    Applicant: The Lubrizol Corporation
    Inventors: Bryan A. Grisso, Mark R. Baker, Daniel C. Visger, Marina Baum, Barton J. Schober, Calvin A. James
  • Publication number: 20090247437
    Abstract: In order to provide for a grease composition reducing or preventing noise, vibration and harshness (NVH) in the driveline, a grease composition for use in constant velocity joints is suggested, comprising a) a base oil composition; b) at least one tri-nuclear molybdenum compound of the formula MO3SkLnQZ, wherein L are independently selected ligands having organo groups with a sufficient number of carbon atoms to render the compound soluble or dispersible in the oil, n is from 1 to 4, k varies from 4 though 7, Q is selected from the group of neutral electron donating compounds such as amines, alcohols, phosphines, and ethers, and z ranges from 0 to 5 and includes non-stoichiometric values. c) at least one further molybdenum containing compound; and d) at least one simple and/or complex soap thickener.
    Type: Application
    Filed: April 7, 2009
    Publication date: October 1, 2009
    Inventors: Jisheng E., Frank Resher, Leandro Muntada, Stefanie Rosenkranz
  • Publication number: 20090247435
    Abstract: To solve the problem to provide for a new grease composition giving low wear and low friction primarily to constant velocity joints, a grease composition is suggested comprising a) a base oil composition; and b) 0.25% by weight to 5% by weight of at least one tri-nuclear molybdenum corn pound of the formula Mo3SkLnQz wherein L are independently selected ligands having organo groups with a sufficient number of carbon atoms to render the compound soluble or dispersible in the oil, n is from 1 to 4, k varies from 4 though 7, Q is selected from the group of neutral electron donating compounds such as amines, alcohols, phosphines, and ethers, and z ranges from 0 to 5 and includes non-stoichiometric values.
    Type: Application
    Filed: April 7, 2009
    Publication date: October 1, 2009
    Inventors: Jisheng E, Frank Reher, Stefanie Rosenkranz
  • Patent number: 7595286
    Abstract: An oil composition for cutting and grinding by minimal quantity lubrication system and for sliding surface according to the present invention comprises an ester and a sulfur compound and/or a phosphorus compound.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: September 29, 2009
    Assignee: Nippon Oil Corporation
    Inventors: Hideo Yokota, Masanori Ibi, Satoshi Suda
  • Publication number: 20080234153
    Abstract: The present invention provides a lubricating oil composition, which is capable to maintain sufficient low-friction (i.e. fuel saving performance) even when the lubricating oil is contaminated with soot and metal abrasion powder, which is excellent in durability with regard to anti-wear property and detergency, as well as oxidation stability, and which is capable to lower the ash content and to sufficiently maintain the performance of exhaust-gas after-treatment device for a long term. The lubricating oil composition comprises a lubricant base oil containing a base oil (X) of which % CP is 70 or more, % CA is 1 or less, viscosity index is 115 or more, and CCS viscosity at ?35° C. is 3000 mPa·s or less, wherein the lubricant base oil, to total mass of the composition, contains following components (A)˜(D): (A) 0.01˜10 mass % of ashless friction modifier; (B) 0.01˜0.2 mass % of phosphorus-containing anti-wear agent as phosphorous content; (C) 0.01˜1 mass % of metallic detergent as metal content; and (D) 0.01˜0.
    Type: Application
    Filed: March 18, 2008
    Publication date: September 25, 2008
    Inventor: Shigeki MATSUI
  • Publication number: 20080221000
    Abstract: An antioxidant lubricant composition has at least 50 wt % of a lubricating base oil and an oil-soluble metal compound providing between 1 and 2,000 parts per million of metal to the lubricant composition, the metal compound being chosen from the group consisting of molybdenum, tungsten titanium and boron compounds, and an oil-soluble hindered amine providing between about 0.001 and about 2 wt % of oil-soluble hindered amine to the lubricant composition, and optionally, an oil-soluble diarylamine providing between 0.001 and about 2 wt % of oil-soluble diarylamine to the lubricant composition.
    Type: Application
    Filed: March 3, 2008
    Publication date: September 11, 2008
    Applicant: R.T. VANDERBILT COMPANY, INC.
    Inventors: KEVIN J. CHASE, JOHN M. DeMASSA, BRIAN W. STUNKEL, GLENN A. MAZZAMARO, STEVEN G. DONNELLY
  • Publication number: 20080176776
    Abstract: In order to provide for a grease composition which has a good compatibility with boots made of rubber or thermoplastic elastomer, and which also gives low wear and low friction, a grease composition for use in constant velocity joints is suggested, comprising a) a base oil composition; b) at least one tri-nuclear molybdenum compound of the formula Mo3SkLnQz, wherein L are independently selected ligands having organo groups with a sufficient number of carbon atoms to render the compound soluble or dispersible in the oil, n is from 1 to 4, k varies from 4 though 7, Q is selected from the group of neutral electron donating compounds such as amines, alcohols, phosphines, and ethers, and z ranges from 0 to 5 and includes non-stoichiometric values; c) at least one urea derivative thickener.
    Type: Application
    Filed: October 8, 2007
    Publication date: July 24, 2008
    Applicants: GKN Driveline International GmbH, Kyodo Yushi Co., Ltd.
    Inventors: Jisheng E., Shinya Kondo, Frank Reher, Akira Taniguchi
  • Publication number: 20080119377
    Abstract: The lubricant compositions of the present disclosure comprises a base oil and an additive composition comprising, for example, a detergent and an additive chosen from a phosphorus-containing compound, a friction modifier, and a dispersant, wherein the additive composition exhibits at least one of reduced thin-film friction and increased fuel efficiency as compared to an additive composition that is devoid of the detergent and the additive. As a further example, the additive composition can comprise a friction modifier and a dispersant, wherein the additive composition exhibits at least one of reduced thin-film friction and increased fuel efficiency as compared to an additive composition that is devoid of the friction modifier and the dispersant. Methods of using the additive and lubricant compositions are also disclosed.
    Type: Application
    Filed: November 22, 2006
    Publication date: May 22, 2008
    Inventors: Mark T. DEVLIN, Tze-chi Jao
  • Publication number: 20080015127
    Abstract: There is disclosed a lubricating composition having a base oil, a friction modifier, and a dispersant, wherein the lubricating composition has less than about 325 ppm of boron. Methods of making and using the disclosed lubricating composition are also disclosed.
    Type: Application
    Filed: July 14, 2006
    Publication date: January 17, 2008
    Inventors: John T. Loper, William Y. Lam, Mark T. Devlin
  • Publication number: 20080015125
    Abstract: A lubricant composition comprising a phosphorus-containing compound and a base oil comprising less than about 3% by weight of tetracycloparaffins is disclosed. Methods of making and using the lubricant composition are also disclosed.
    Type: Application
    Filed: July 14, 2006
    Publication date: January 17, 2008
    Inventors: Mark T. Devlin, Tze-chi Jao, John T. Loper, Roger M. Sheets, Gregory H. Guinther
  • Publication number: 20080015128
    Abstract: There is disclosed a lubricating composition comprising a friction modifier and a base oil comprising less than about 3% by weight of tetracycloparaffins. Methods of making and using the composition are also disclosed.
    Type: Application
    Filed: July 14, 2006
    Publication date: January 17, 2008
    Inventors: Mark T. Devlin, Tze-chi Jao, John T. Loper, Helen T. Ryan, Carl K. Esche
  • Patent number: 7309680
    Abstract: A process for making an additive comprising one or more oil-soluble or oil-dispersible molybdenum-sulfur compounds, said process comprising the steps of: (I) reacting in a polar medium a reactant molybdenum compound (A) and a source of a ligand (B), which ligand (B) is capable of rendering the or each molybdenum-sulfur compound oil-soluble or oil-dispersible; and (II) reacting a compound (C), which is capable of reacting with labile sulfur, either with (a) the reaction mixture of step (I) after the reaction of (A) and (B) has begun or (b) the product of step (I). The additive has improved color characteristics and a lubricating oil composition comprising said additive is more benign to corrosion of metals.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: December 18, 2007
    Assignee: Infineum International Limited
    Inventors: Joby V. John, Ronald P. Wangner, Antonio Gutierrez, Gregory C. Giffin
  • Patent number: 7214648
    Abstract: An engine lubricant formulated as a complete crankcase motor oil or additive concentrate composed of a combination of chemical constituents including a base oil selected from a synthetic oil, a mineral oil or semi-synthetic base oil (hydrogenated oil) or combination thereof, an oil soluble molybdenum additive, a dispersant inhibitor containing zinc dithiophosphate, and viscosity index improvers and one or more seal swelling agents to lubricate the engine and recondition the seals of new and/or high mileage engines. Addition of a polyalphaolefin and/or one or more esters such as a diester or polyolester may also be utilized therein. The lubricant may be formulated as a complete engine oil crankcase lubricant, or concentrated into an additive for addition to conventional mineral oil based engine oil, synthetic engine oils, or blends thereof in an effective amount of up to 30 percent volume percent, typically from 20 to 25 percent by volume.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: May 8, 2007
    Assignee: Ashland Licensing and Intellectual Property, LLC
    Inventors: Mandeep S. Saini, Thomas R. Smith, Michael A. Dituro, Richard J. Baumgart, Frances E. Lockwood
  • Patent number: 7176167
    Abstract: According to the invention, a self contained vibration resistant bearing is provided. The bearing is coated with a film formed from a rust preventive oil having an extreme-pressure additive content of 0.5 to 10% by weight. Desirably the extreme-pressure additive is an organometallic compound, an organofatty acid compound, organofatty acid derivative, an organophosphoric acid compound or a combination of two(2) or more of such compounds. When a rust preventive film that contains an extreme-pressure additive is formed all over bearing components during the assembling process, the bearing components are fully protected even from sudden vibrations from transportation.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: February 13, 2007
    Inventors: Motoharu Akiyama, Noriyuki Yoshimura
  • Patent number: 7067463
    Abstract: A pivot assembly bearing used in an information storage device maintains its capabilities for a longer period of time under frequent quick starting and stopping by containing a grease composition made up of a base oil, a thickener and an extreme-pressure agent.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: June 27, 2006
    Assignee: Minebea Co., Ltd.
    Inventor: Motoharu Akiyama
  • 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: 6953771
    Abstract: A lubricating oil composition comprising, or made by mixing, a major amount of an oil of lubricating viscosity and a minor amount of at least one compound comprising a polynuclear molybdenum core having bonded thereto one or more monoanionic ligands capable of rendering the compound oil-soluble or oil-dispersible, and further comprising at least one ionic species that is not required to confer oil-solubility or oil-dispersibility to the compound, wherein the combination of said one or more monoanionic ligands and said at least one ionic species confers electrical neutrality to the compound and wherein the ratio of the number of molybdenum atoms in the core to the number of said ligands is greater than 1:1.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: October 11, 2005
    Assignee: Infineon International Limited
    Inventors: Jonathan M. McConnachie, Ian A. W. Bell, Alisdair J. Brown, Edward I. Stiefel, Ernestine W. Hill
  • Patent number: 6919300
    Abstract: A protective lubricating composition is provided which will penetrate readily to closely fitting frictional parts and form a protective non-migrating lubricating film improving lubrication between the moving parts reducing friction and wear and preventing corrosion. The lubricant composition may be combined with solvents and propellants to make a sprayable lubricant composition.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: July 19, 2005
    Assignee: Ashland Inc.
    Inventors: Michael A. Dituro, Richard J. Baumgart, Mandeep S. Saini, Christopher J. Nonevski
  • Patent number: 6894009
    Abstract: A grease composition for constant velocity joints, having a base oil and a urea-based thickener, which grease additionally contains, (A) molybdenum sulphide dialkyldithiocarbamate and (B) 5,5-dithiobis (1,3,4-thiadiazole-2-thiol); a method of lubricating a constant velocity joint including packing it with grease and a constant velocity joint packed with said grease.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: May 17, 2005
    Assignee: Shell Oil Company
    Inventors: Yasushi Kawamura, Kouichi Nakazawa, Noriaki Shinoda, Keiji Tanaka, Tetsuo Nimura, Kouji Saitou, Tomoyasu Wada
  • Patent number: 6890890
    Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) an antiwear improving amount of at least one molybdenum containing composition, (B) at least one phosphorus antiwear or extreme pressure agent, and (C) at least one dispersant, provided that the lubricating composition is free of polysulfurized olefins. The lubricating compositions have improved antiwear properties. When the lubricating composition is used in a manual transmission, the amount of brass wear is reduced.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: May 10, 2005
    Assignee: The Lubrizol Corporation
    Inventor: Michael P. Gahagan
  • Patent number: 6852678
    Abstract: An aqueous lubricant is provided which by simple application onto metal surfaces forms lubricating films required for heavy working of metals, and which contains no oil. The aqueous lubricant is prepared by suspending or dispersing a metal chelate compound in water with a surfactant or the like. The metal chelate compound has a polydentate or multidentate chelate ligand, in which at least one of the coordinating atoms is sulfur, coordinated to the coordination site of at least one metal species selected from among zinc, manganese, iron, molybdenum, tin and antimony. When applied onto metal surfaces, the aqueous lubricant forms effective lubricating films on the metal surfaces. The lubricating films contain sulfur as coordinating atoms and therefore, extreme pressure produces sulfur radicals through decomposition by tribo-chemical reactions. The sulfur radicals are highly reactive and react rapidly with the metal surface to produce metal sulfides with a lubricating effect.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: February 8, 2005
    Assignees: MEC International Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Heijiro Ojima, Masahiko Takeuchi, Fumio Ikesue, Noritoshi Kaskimura, Fumio Kawahara, Mitsuru Tomono
  • Publication number: 20040224859
    Abstract: A urea grease composition is provided containing a lubricating base oil and from 2 to 30 wt.
    Type: Application
    Filed: December 4, 2003
    Publication date: November 11, 2004
    Inventors: Kouichi Numazawa, Kazushige Ohmura, Takahiro Ozaki, Keiji Tanaka
  • Patent number: 6774092
    Abstract: Disclosed is an additive composition that can be mixed with various types of basic oils to produce a lubricant that can meet the international standards of manual truck gearbox oils. A preferred embodiment includes various quantities of an isobutylene sulfide, zinc dialklydithiophosate and other components. Component properties of the additive composition are selected to produce a lubricant that has good thermal stability, rust-resisting and endurance qualities and that has a low cost of use and production.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: August 10, 2004
    Assignee: PetroChina Company, Ltd.
    Inventors: Xisheng Fu, Xiuling Hua
  • Patent number: 6774091
    Abstract: A lubricant additive formulation for increasing the performance of conventional engine lubricants for use as an engine treatment oil additive formulated for addition to conventional motor oil to improve the lubricating properties of the engine oil and enhance the performance of the engine. A preferred embodiment of the engine treatment oil additive comprises a blend of chemical constituents including a base stock selected from a synthetic base stock, a mineral oil base stock, and a severely hydrocracked base stock or combinations thereof, an oil soluble molybdenum additive, dispersant inhibitor, and selected additives such as polytetrafluoroethylene, viscosity index improvers, and extreme pressure wear agent used in combination with a conventional crankcase lubricant at about a 20 to about a 25% volume/percent or as a complete motor oil. Additional components may be added to the engine treatment oil additive formulation to enhance specific properties for special applications.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: August 10, 2004
    Assignee: Ashland Inc.
    Inventors: Michael A. Dituro, Richard J. Baumgart, Frances E. Lockwood
  • Publication number: 20040138073
    Abstract: An additive for imparting antiwear properties to a lubricant composition is based on a combination of (1) an organo borate ester composition and (2) one or more sulfur- or phosphorus-containing compounds or a non-sulfur molybdenum compound. The sulfur- or phosphorus-containing compounds are dithiocarbamate, bisdithiocarbamate, 1,3,4-diathiazole, phosphorodithioate, phosphorodithioate esters, and the molybdenum compound is prepared by reacting (a) about 1.0 mole of fatty oil having 12 or more carbon atoms, (b) about 1.0 to 2.5 moles diethanolamine and (c) a molybdenum source.
    Type: Application
    Filed: October 2, 2003
    Publication date: July 15, 2004
    Applicant: R.T. Vanderbilt Company, Inc.
    Inventors: Thomas J. Karol, Steven G. Donnelly
  • Publication number: 20040132627
    Abstract: A process for making an additive comprising one or more oil-soluble or oil-dispersible molybdenum-sulfur compounds, said process comprising the steps of:
    Type: Application
    Filed: July 1, 2003
    Publication date: July 8, 2004
    Inventors: Joby V. John, Ronald P. Wangner, Antonio Gutierrez, Gregory C. Giffin
  • Publication number: 20040116309
    Abstract: An oil composition for cutting and grinding by minimal quantity lubrication system and for sliding surface according to the present invention comprises an ester and a sulfur compound and/or a phosphorus compound.
    Type: Application
    Filed: October 3, 2003
    Publication date: June 17, 2004
    Inventors: Hideo Yokota, Masanori Ibi, Satoshi Suda
  • Patent number: 6730638
    Abstract: A lubricating composition for internal combustion engines especially useful with fuels having less than 350 ppm sulfur comprises a lubricating oil basestock, a boron containing ashless dispersant, a molybdenum containing friction reducing agent, a metal type detergent and zinc dithiophosphate.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: May 4, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Liehpao O. Farng, Andrew Jackson, Willie A. Givens, Jr., Douglas E. Deckman, William H. Buck
  • Patent number: 6727208
    Abstract: A lubricating oil composition comprising a major amount of an oil of lubricating viscosity and an additive system comprising (A) from about 0.1 to about 5% by weight of a detergent composition comprising at least two metal overbased compositions wherein said detergent composition consists essentially of (A-1) at least one alkali metal overbased detergent and (A-2) at least one calcium overbased detergent, wherein the ratio of total base number on a per 100 TBN and diluent-free basis contributed by the alkali metal detergent to the total base number contributed by the calcium detergent ranges from about 99.5-20 to about 0.5-80; (B) from about 1 to about 10% by weight of a succinimide dispersant; and (C) from about 0.1 to about 5 % by weight of a metal dihydrocarbyl dithiophosphate of the formula (I) wherein R1 and R2 are each, independently, hydrocarbyl groups containing from 3 to 13 carbon atoms, M is a metal and n is an integer equal to the valence of M.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: April 27, 2004
    Assignee: The Lubrizol Corporation
    Inventor: Melody A. Wilk
  • Patent number: 6723685
    Abstract: A lubricating oil composition comprising a) an oil of lubricating viscosity having a viscosity index of at least 95; b) at least one calcium detergent; c) at least one oil soluble molybdenum compound; d) at least one organic ashless nitrogen-free friction modifier; and e) at least one metal dihydrocarbyldithiophosphate compound, the composition having a Noack volatility of about 15 wt. % or less, from 0.05 to 0.6 wt. % calcium from the calcium detergent, molybdenum in an amount of at least 10 ppm from the molybdenum compound, and phosphorus from the metal dihydrocarbyldithiophosphate compound in an amount up to about 0.1 wt. %.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: April 20, 2004
    Assignee: Infineum International Ltd.
    Inventors: Rolfe J. Hartley, Malcolm Waddoups
  • Publication number: 20040038834
    Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) an antiwear improving amount of at least one molybdenum containing composition, (B) at least one phosphorus antiwear or extreme pressure agent, and (C) at least one dispersant, provided that the lubricating composition is free of polysulfurized olefins. The lubricating compositions have improved antiwear properties. When the lubricating composition is used in a manual transmission, the amount of brass wear is reduced.
    Type: Application
    Filed: August 21, 2003
    Publication date: February 26, 2004
    Inventor: Michael P. Gahagan