Patents Examined by Frank C Campanell
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Patent number: 7867957Abstract: The lubricating oil composition of the invention comprises a lubricating base oil with a urea adduct value of no greater than 4% by mass and a viscosity index of 100 or higher, an ashless friction modifier at 0.01-10% by mass and a phosphorus-containing anti-wear agent at 0.01-0.2% by mass as phosphorus, based on the total amount of the composition.Type: GrantFiled: March 28, 2008Date of Patent: January 11, 2011Assignee: Nippon Oil CorporationInventors: Shigeki Matsui, Kazuo Tagawa
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Method for forming tetraoxy-silane derived antiwear films and lubricating oil compositions therefrom
Patent number: 7867960Abstract: Disclosed is a method for forming an antiwear film on an internal engine component comprising: contacting a surface of an internal wearing component of the engine with a tetra-functional hydrolyzable silane compound of the general formula Si—X4 or hydrolysis product thereof, wherein X is independently selected from the group consisting of hydroxyl, alkoxy, aryloxy, acyloxy, amino, monoalkyl amino and dialkyl amino; and hydrolyzing and condensing the tetra-functional silane to thereby form a film. Also disclosed are mixed silane films and the products produced by these methods.Type: GrantFiled: August 31, 2006Date of Patent: January 11, 2011Assignee: Cherron Oronite Company LLCInventors: Elaine S. Yamaguchi, Kam-Sik Ng -
Patent number: 7846882Abstract: Electrical oil formulation comprising a base oil component and an additive, wherein (i) at least 80 wt % of the base oil component is a paraffin base oil having a paraffin content of greater than 80 wt % paraffins and a saturates content of greater than 98 wt % and comprising a series of iso-paraffins having n, n+1, n+2, n+3 and n+4 carbon atoms and wherein n is between 20 and 35; and (ii) an anti-oxidant additive; wherein the base oil component has a flash point of at least 170° C., as determined by ISO 2592.Type: GrantFiled: June 22, 2006Date of Patent: December 7, 2010Assignee: Shell Oil CompanyInventors: Andree Hilker, Volker Klaus Null
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Patent number: 7846880Abstract: A lubricant, comprising a light base oil fraction having a wt % Noack volatility between 0 and 100 and additionally less than a Noack Volatility Factor (NVF), wherein the Noack Volatility Factor is defined by the equation; 900×(Kinematic Viscosity at 100° C.)?2.8?15, and optionally one or more additional additives. A process to make the light base oil fraction, comprising hydroisomerization dewaxing a waxy feed in a series of two or more reactors, and recovering the light base oil fraction having a low wt % Noack volatility. Also, a light base oil fraction having a wt % Noack volatility between 0 and 100 and additionally less than the NVF, made by the process of hydroisomerization dewaxing a waxy feed in a series of reactors.Type: GrantFiled: December 20, 2006Date of Patent: December 7, 2010Assignee: Chevron U.S.A. Inc.Inventors: John M. Rosenbaum, Nancy J. Bertrand, Scott C. Deskin, Brent K. Lok, Shuibo Xie, Stephen J. Miller
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Patent number: 7838474Abstract: This invention encompasses lubricating oil compositions comprising a base oil, a biodiesel fuel and a detergent. The detergent can be a metal phenate detergent such as alkaline metal phenates. The lubricating oil compositions can further comprise at least one antiwear agent such as zinc dialkyl dithiophosphate compounds. Methods of making and using the lubricating oil compositions are also described.Type: GrantFiled: October 31, 2007Date of Patent: November 23, 2010Assignee: Chevron Oronite Company LLCInventor: Alexander B. Boffa
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Patent number: 7838471Abstract: The invention relates to compositions comprising a blend of Group II basestocks and low volatility, low viscosity PAO basestocks. The blend is particularly useful for preparing finished lubricants that meet or even exceed the criteria for SAE Grade 0W multi-grade engine oils. The combination of these low volatility, low viscosity PAOs with Group II basestocks provide, in embodiments, the necessary performance criteria in automatic transmission fluids, automotive or industrial gear oils, hydraulic fluids, or any other high performance lubricant requiring a combination of excellent low fluidity and low volatility.Type: GrantFiled: August 7, 2006Date of Patent: November 23, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Fahimeh Pedram Shirazi, William Grant Britton
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Patent number: 7833953Abstract: A lubricant composition comprising a dispersant and a base oil comprising more than about 1.6% by weight of tetracycloparaffins is disclosed. Methods of making and using the lubricant composition are also disclosed.Type: GrantFiled: August 28, 2006Date of Patent: November 16, 2010Assignee: Afton Chemical CorporationInventors: Mark T. Devlin, Tze-chi Jao
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Patent number: 7833954Abstract: The present application is directed to a lubricant composition comprising a major amount of a base oil; and a lead corrosion inhibiting amount of a reaction product of a hydrocarbyl carbonyl compound and an amine compound chosen from guanidines, ureas and thioureas; with the proviso that the lubricant is essentially free of zinc dialkyldithiophosphate wear inhibitors, and substantially free of chlorinated paraffins and calcium mannich phenate.Type: GrantFiled: February 11, 2008Date of Patent: November 16, 2010Assignee: Afton Chemical CorporationInventor: David A. Hutchison
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Patent number: 7833952Abstract: A lubricant composition comprising a detergent and a base oil comprising more than about 1.6% by weight of tetracycloparaffins is disclosed. Methods of making and using the composition are also disclosed.Type: GrantFiled: August 28, 2006Date of Patent: November 16, 2010Assignee: Afton Chemical CorporationInventors: Mark T. Devlin, Tze-chi Jao
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Patent number: 7820601Abstract: A system and method for improving lubrication in a fluid dynamic bearing are disclosed. A fluid dynamic bearing comprising a rotor portion and a stator portion is formed. In addition, a lubricating fluid comprising a high pressure lubricant is provided between the rotor portion and the stator portion of the fluid dynamic bearing, wherein the high pressure lubricant provides extreme pressure protection of the rotor portion and the stator portion of the fluid dynamic bearing.Type: GrantFiled: July 28, 2006Date of Patent: October 26, 2010Assignee: Hitachi Global Storage Technologies Netherlands, B.V.Inventors: Thomas E. Karis, Kunihiro Shida
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Patent number: 7820599Abstract: A lubricating oil composition includes lubricating oil base oil, an organic molybdenum compound (A), zinc dialkyl dithiophosphate (B), at least one compound (C) selected from calcium sulfonate, calcium phenate, and magnesium sulfonate and having a base number of 230 mgKOH/g or more, and an ashless dispersant containing boron or a mixture of an ashless dispersant containing boron and an ashless dispersant containing no boron (D) in predetermined ratios, in which: a mass ratio (P/Mo) of the P content to the Mo content in the composition is 1.5 or more; a mass ratio (CaMg/Mo) of a total content of the Ca and Mg derived from the component (C) to the Mo content in the composition is 3 or more; and a mass ratio (B/N) between B and N derived from the component (D) in the composition is 0.5 or more.Type: GrantFiled: May 25, 2006Date of Patent: October 26, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventor: Moritsugu Kasai
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Patent number: 7807610Abstract: An automotive lubricating oil composition containing: (A) an oil of lubricating viscosity in a major amount; and (B) as an additive component in a minor amount, an oil-soluble or oil-dispersible 4-oxobutanoic acid having the moiety —CO(CH2)COOH bonded to (i) a group OR1 where R1 is hydrocarbyl group having 10 to 30 carbon atoms; or (ii) a group X being an aromatic group substituted with at least one hydrocarbyl group having 10 to 30 carbon atoms; or (iii) a group NR2R3 where one or both of R2 and R3 is hydrocarbyl group having from 10 to 30 carbon atoms and one but not both of R2 and R3 may be a hydrogen atom, or a salt thereof.Type: GrantFiled: November 19, 2007Date of Patent: October 5, 2010Assignee: Infineum International LimitedInventors: Steve Harris, Peter Anthony Tasker
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Patent number: 7803745Abstract: A lubricating oil composition of the present invention which contains an ether ashless friction modifier is applicable to a sliding surface having a low friction sliding member, is capable of imparting excellent low friction characteristics thereto and, in particular, is capable of giving a fuel saving effect when applied to an internal combustion engine.Type: GrantFiled: July 12, 2005Date of Patent: September 28, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventor: Moritsugu Kasai
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Patent number: 7795191Abstract: Lubricating oil composition having a sulphur content of from 0.01 to 0.3 wt. %, a phosphorus content of from 0.01 to 0.1 wt. % and a sulphated ash content of from 0.1 to 1.2 wt. %, based on the total weight of the lubricating oil composition is provided. The lubricating oil composition contains a mineral and/or synthetic base oil and one or more compounds of formula I, wherein R is an optionally substituted branched or straight chain alkyl group containing from 3 to 50 carbon atoms; R1 is hydrogen or an optionally substituted branched or straight chain alkyl group containing from 1 to 50 carbon atoms; n is an integer equal to or greater than 1, and m is also an integer equal to or greater than 1; and X is an integer from 2 to 10,000. A method of improving engine cleanliness in diesel, gas-fuelled or gasoline engine applications using such composition is also provided.Type: GrantFiled: June 17, 2005Date of Patent: September 14, 2010Assignee: Shell Oil CompanyInventor: David Colbourne
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Patent number: 7786056Abstract: A silicone grease composition comprising 3-30 wt % of an organopolysiloxane and 60-96.9 wt % of a heat conductive filler is diluted with a least volatile isoparaffin having a boiling point of 260-360° C. Despite a heavy loading of heat conductive filler, the grease composition is easily applicable to heat sinks as a thin uniform coating. The composition is drastically increased in shelf stability at room temperature, easy to handle, and provides for good heat dissipation.Type: GrantFiled: March 31, 2008Date of Patent: August 31, 2010Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Nobuaki Matsumoto, Kunihiro Yamada, Kei Miyoshi, Ikuo Sakurai, Kenichi Isobe
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Patent number: 7780746Abstract: The disclosure is directed to a method of enhancing a fuel value for a used or waste lubricating oil, lubricating oils having improved combustion and emission characteristics, and a business method for distributing and using waste oils as components of primary combustion fuels. In one embodiment, there is provided a lubricating oil composition having improved combustion and emission properties when burned as a used lubricating oil composition. The lubricating oil composition includes a major amount of oil of lubricating viscosity and a minor combustion improving amount of a combustion improving additive.Type: GrantFiled: September 22, 2006Date of Patent: August 24, 2010Assignee: Afton Chemical CorporationInventors: Ian Macpherson, Allen A. Aradi, David Cleaver
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Patent number: 7781383Abstract: A lubricant, comprising: a base oil as primary lubricant component, and a naphthenate salt as additive (A), and an alkylimidazole compound as additive (B), added to the base oil, preferably further comprising an aliphatic amine compound as additive (C), a fluid dynamic bearing with the lubricant filled therein, a spindle motor with the fluid dynamic bearing installed therein, and a magnetic disk device with the spindle motor installed therein.Type: GrantFiled: April 10, 2006Date of Patent: August 24, 2010Assignee: Panasonic CorporationInventors: Takanori Shiraishi, Hideaki Ohno, Katsushi Hirata
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Patent number: 7772168Abstract: A lubricating composition includes, in weight %, at least 90 percent of a vegetable oil, and an additive composition including: (a) about 1.5 to 2 percent triphenylphosphorothionate (TPPT), (b) about 0.1 to 3 percent hindered phenolic antioxidant, (c) about 0.05 to 0.25 percent 1-[di(phenyl)aminomethyl]tolutriazole, and (d) about 0.05 to 0.5 percent alkyl succinic acid half ester rust inhibitor.Type: GrantFiled: November 29, 2007Date of Patent: August 10, 2010Assignee: R.T. Vanderbilt Company, Inc.Inventors: Brian Stunkel, Gaston A. Aguilar
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Patent number: 7772172Abstract: A lubricant for improving the durability and reliability of recording media used in hard drives is disclosed. The lubricant comprises a perfluoropolyether main chain with a first end attached to a hexa(trifluoromethylphenoxy)cyclotriphosphazene, a second end attached to a bonding enhancer for enhancing bonding between the lubricant and a carbon-containing layer. The bonding enhancer of the lubricant can contain multiple hydroxyl, amide groups, 2,3-dihydroxy-1-propoxyl, acetamide, methacrylate, methyl methacrylate and glycidyl ether. Some bonding enhancers such as methacrylate, methyl methacrylate or glycidyl ether, can be further activated with ultraviolet light.Type: GrantFiled: July 17, 2009Date of Patent: August 10, 2010Assignee: Seagate Technology LLCInventors: Jianwei Liu, Michael Joseph Stirniman, Huan Tang, Jing Gui
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Patent number: 7767633Abstract: The present invention is directed to a low sulfur and low phosphorus heavy duty diesel engine lubricating oil composition comprising (a) a major amount of an oil of lubricating viscosity and (b) one or more dispersants (c) one or more anti-oxidants and (d) one or more ash-containing detergents, wherein the lubricating oil composition is essentially free of zinc di-alkyl di-thiophosphates and contains no more than 0.175 weight percent sulfur and provided the lubricating oil composition does not contain alkylated and non-alkylated aromatic amines and tri-nuclear molybdenum compounds.Type: GrantFiled: November 14, 2005Date of Patent: August 3, 2010Assignee: Chevron Oronite Company LLCInventor: Willem van Dam