Patents Represented by Attorney Norby L. Foss
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Patent number: 7172903Abstract: Oil aging and particulate building in a lubricant other than one exposed to combustion products is monitored by detecting light transmitted through the lubricant at least one, and preferably, two or more preselected wavelengths over a pathlength greater than about 0.5 cm wherein one wavelength is in the near infra-red spectrum and/or one wavelength is in the visible or near infra-red spectrum. The detected light when compared to predetermined values provides an indication of the condition of the lubricant.Type: GrantFiled: March 4, 2003Date of Patent: February 6, 2007Assignee: ExxonMobil Research and Engineering CompanyInventors: Alan M. Schilowitz, John S. Szobota, Walter D. Vann
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Patent number: 6992049Abstract: The present invention provides a viscosity index improving lubricant additive which comprises an olefinic oligomer of about 2,000 to about 20,000 number average molecular weight having a viscosity of 75 to about 3,000 cSt at 100° C. and a hydrocarbyl aromatic which contains at least about 5% of its weight from aromatic moieties having a viscosity of about 3 to about 50 cSt at 100° C. where the weight ratio of hydrocarbyl aromatic component to olefin oligomer is from about 1:2 to about 50:1. In another aspect, the invention provides for a lubricating oil composition comprising a base oil and the instant viscosity index improving additive.Type: GrantFiled: January 28, 2003Date of Patent: January 31, 2006Assignee: ExxonMobil Research and Engineering CompanyInventors: Douglas E. Deckman, William L. Maxwell, William H. Buck, Mark D. Winemiller, David J. Baillargeon
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Patent number: 6900151Abstract: An in situ process for conducting regeneration of spent hydrocarbon synthesis catalyst. Regenerated, but not yet re-activated, catalyst (15) may be introduced into an operating HCS reactor (1) that has catalyst rejuvenation means (14). Any combination of a fresh, activated catalyst, a fresh, passivated catalyst or short-term or long-term deactivated catalysts may already be present in the HCS reactor (1). The regenerated, but not yet re-activated catalyst is activated in the HCS reactor (1) with rejuvenation means (14) at normal process conditions. The HCS reactor (1) receives syngas through the inlet line (3) and releases liquid hydrocarbons through outlet line (4) and gaseous hydrocarbon and unreacted syngas through the offgas line (2). Catalyst is removed from the HCS reactor (1) through the slipstream line (5) and into a filtration unit (6) which is fed with a stripping fluid (7). The filtered catalyst proceeds to the regeneration unit (9) which is fed a regenerative fluid (10).Type: GrantFiled: November 13, 2001Date of Patent: May 31, 2005Assignee: ExxonMobil Research and Engineering CompanyInventors: Stuart Leon Soled, Joseph Ernest Baumgartner, Gabor Kiss
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Patent number: 6874459Abstract: A device and a method for the modification of an operating all-loss engine lubricant's properties in response to actual engine operating conditions. The present invention is a method that comprises (1) monitoring the specific engine parameter(s) of interest, or in the alternative, predicting those parameter(s) from other engine inputs for a crosshead diesel engine; (2) calculating from said parameter(s) or input(s) the amount of performance enhancer(s), base lubricant or alternatively formulated lubricant that need be added to the engine's base lubricant; and (3) modifying said base lubricant with said performance enhancers, additional base lubricant or alternatively formulated lubricant before introduction the combination into said monitored part or location.Type: GrantFiled: January 24, 2003Date of Patent: April 5, 2005Assignee: ExxonMobil Research and Engineering CompanyInventors: Vincent M. Carey, Kevin John Kelly, Kevin L. Crouthamel, Keith P. Saddler
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Patent number: 6851414Abstract: A device and method to extend the useful lubricant life in a diesel engine equipped with an Exhaust Gas Recirculation (EGR) system consisting of placing a chemical filter in an area of relatively higher humidity either in the EGR stream or near the intake manifold. In some cases, placing chemical filters in both locations would be preferred. This device may also be used in combination with a chemical filter placed in the lubricant recirculation system which produces a synergistic effect beyond the individual effects of either component.Type: GrantFiled: July 15, 2003Date of Patent: February 8, 2005Assignee: ExxonMobil Research and Engineering CompanyInventors: Jason Zhisheng Gao, Mahmoud Mostafa Hafez, Riccardo Conti
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Patent number: 6845745Abstract: A device and a method for real time optimizing engine lubricating oil properties in response to actual engine operating conditions. the present invention is a method that comprises measuring, directly or indirectly, a system parameter of interest near a location of interest, calculating from said parameter(s) or input(s) the amount of a secondary fluid selected from performance enhancer(s), additional base lubricant, alternatively formulated lubricant or diluent that need be added to the base lubricant; and supplementing said base lubricant with said secondary fluid before introducing the combination into said monitored location.Type: GrantFiled: January 24, 2003Date of Patent: January 25, 2005Assignee: ExxonMobil Research and Engineering CompanyInventors: Vincent M. Carey, Kevin John Kelly, Keith P. Saddler, Kevin L. Crouthamel
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Patent number: 6787124Abstract: A new synthetic porous crystalline material, designated EMM-1, is disclosed having, in its calcined form, the X-ray diffraction pattern of Table 2 above. Also disclosed are methods of making EMM-1 in the presence of HF using various organic nitrogen compounds as directing agents. Aluminum-containing EMM-1 can be produced either by inclusion of Al in the synthesis, or by incorporation of B or Ga in the synthesis, followed by post treatment with aluminum nitrate or other sources of Al. EMM-1 is useful as an acid catalyst and as an adsorbent.Type: GrantFiled: February 14, 2003Date of Patent: September 7, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: Arthur W. Chester, Sandeep S. Dhingra, Stephen G. Casmer
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Patent number: 6779505Abstract: A method to employ instrumentation to effectuate variation in lubricant flow rate or properties in response to actual engine conditions. Preferably, the present invention provides a method for the in situ monitoring of the lubricating oil's effectiveness in a two-stroke diesel engine by measuring the used lubricant's Fe content and fuel sulfur content with XRF technology and the used lubricant's BN with an IR measurement device, and for efficiently modifying the lubricant's properties and/or flow rate to the equipment in response to the actual wear or corrosion needs of the machinery or engine.Type: GrantFiled: March 25, 2003Date of Patent: August 24, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: Paul Thomas Reischman, Vincent Mark Carey, Kevin John Kelly
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Patent number: 6750185Abstract: The invention provides a lubricant oil composition useful for reduction in friction loss and improvement in fuel economy in internal combustion engines, particularly, a lubricant oil composition for internal combustion engines exhibiting an excellent friction reducing effect even in a diesel engine equipped with EGR accompanied with an increase in soot content in oil. The invention is a lubricant composition for internal combustion engines comprising a lubricant base oil consisting of a mineral oil and/or synthetic oil or the like incorporated with 1 wt % or more, based on the total weight of the lubricant oil composition, a nonionic surfactant with alkylene oxide added thereto consisting of at least one compound having an HLB value of 15 or more and a molecular weight of 900 or more, and a friction reducing method for internal combustion engines using this lubricant oil composition.Type: GrantFiled: March 29, 2002Date of Patent: June 15, 2004Assignee: TonenGeneral Sekiyu K.K.Inventors: Sonmin Ryu, Shuzo Nemoto, Satoshi Ogano
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Patent number: 6734150Abstract: This invention relates to a lubricating oil composition comprising a base stock and an antioxidant comprising an oil soluble trinuclear organomolybdenum compound of the generic formula: Mo3Sx—(Q) (1) wherein x is from 4 to 10 and Q is a core group, which may be a ligand, and at least one other compound selected from a phenolic and an aminic compound wherein the basestock has a kinematic viscosity at 100° C. (KV100) from about 2 cSt to 20 cSt (2×10−6 to 20×10−6 m2/sec) and a saturates content of at least 85%. The composition has a high oxidation stability, reduced deposit formation and is capable of giving rise to good fuel economy improvement.Type: GrantFiled: November 12, 2002Date of Patent: May 11, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: Jason Zhisheng Gao, Christopher John May, Jeffrey Robert Torkelson, Paul Simon Woolley
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Patent number: 6730638Abstract: 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: GrantFiled: January 24, 2003Date of Patent: May 4, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: Liehpao O. Farng, Andrew Jackson, Willie A. Givens, Jr., Douglas E. Deckman, William H. Buck
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Patent number: 6723300Abstract: In a process for synthesizing a porous crystalline material, a mixture capable of forming said material is prepared wherein the mixture comprises sources of water, an oxide of a tetravalent element Y, preferably silicon, an oxide of a trivalent element X, wherein X is selected from the group consisting of aluminum, boron, gallium, iron, and indium, fluoride ions, and an organonitrogen cation RNm+ capable of directing the synthesis of said material, wherein the molar ratio of fluoride ions to organonitrogen cations RNm+ in said mixture is greater than 1.15 m but less than 2.5 m. The mixture is maintained under crystallization conditions until crystals of said material are formed and the resultant crystalline material is recovered.Type: GrantFiled: February 14, 2003Date of Patent: April 20, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: Kirk D. Schmitt, Stephen G. Casmer
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Patent number: 6703430Abstract: A process for rejuvenating reversibly deactivated catalyst particles in a three-phase slurry body of gas bubbles and catalyst particles in a slurry liquid, includes passing slurry from the top down to the bottom of the body through a slurry catalyst rejuvenating means. The slurry is sequentially passed through a first gas bubble reducing zone, a catalyst rejuvenating gas contacting zone, a second gas bubble reducing zone and then a downcomer transfer zone. The gas bubble reducing, contacting and at least a portion of transfer occur in slurry body. At least part of the means is in the slurry body.Type: GrantFiled: December 17, 2002Date of Patent: March 9, 2004Assignee: ExxonMobil Research and Engineering CompanyInventor: Claude Clarence Culross
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Patent number: 6689726Abstract: Lubricating oil formulations comprising base oil, sulfur-phosphorous anti-wear/extreme pressure agent and hindered phenol antioxidant, which combination of extreme pressure agent and hindered phenol antioxidant produces crystals and containing antioxidants, wherein the base oil is characterized as having a saturates content of 99 wt % or more is stabilized against crystal formation by the addition of a minor amount of high molecular weigh di- or polycarboxylic acid, or anhydride and an ester.Type: GrantFiled: June 17, 2002Date of Patent: February 10, 2004Assignee: ExxonMobil Research and Engineering CompanyInventor: David Gary Lawton Holt
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Patent number: 6689725Abstract: This invention relates to a method of controlling the soot induced viscosity increase of a diesel engine lubricant composition comprising a base oil and a dispersant, by including in said lubricant composition an effective amount of an antioxidant, characterised in that the antioxidant comprises a dihydrocarbyldithiocarbamate of a metal selected from antimony, bismuth and mixtures thereof. The antioxidant may optionally contain at least one other compound selected from a phenolic and an aminic compound. The method of the present invention improves the performance retention of the dispersant additive, and thus inhibits the soot-induced viscosity increase of the lubricant.Type: GrantFiled: June 11, 2002Date of Patent: February 10, 2004Assignee: ExxonMobil Research and Engineering CompanyInventor: Jason Zhisheng Gao
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Patent number: 6649574Abstract: A biodegradable lubricating oil composition especially useful as a gear oil employs a synthetic alcohol ester basestock formed from mono- and dipentaerythritol with certain mono- and dicarboxylic acids or dicarboxylic acid anhydrides and an effective amount of a polyoxyalkylene alcohol demulsifying agent, a combination of alkylated organic acid and ashless succinimide rust inhibitors and an ashless dithiocarbamate antiwear and extreme pressure agent.Type: GrantFiled: October 8, 2002Date of Patent: November 18, 2003Assignee: ExxonMobil Research and Engineering CompanyInventors: Angeline Baird Cardis, Susan Ardito
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Patent number: 6638897Abstract: The lubricating oil of the present invention exhibits an excellent effect of agglomerating solid impurity particles it contains to a sufficiently large size as to be captured and removed by an oil filter.Type: GrantFiled: July 9, 1999Date of Patent: October 28, 2003Assignee: TonenGeneral Sekiyu K.K.Inventors: Satoshi Ogano, Nobuchika Kawagoishi, Makota Yoneda, Toshiaki Kuribayashi
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Patent number: 6610636Abstract: A premium synthetic lubricant having antiwear properties comprises a synthetic isoparaffinic hydrocarbon base stock and an effective amount of at least one antiwear additive. The antiwear additive is preferably at least one of a metal phosphate, a metal dialkyldithiophosphate, a metal dithiophosphate a metal thiocarbamate, a metal dithiocarbamate, an ethoxylated amine dialkyldithiophosphate and an ethoxylated amine dithiobenzoate. Metal dialkyldithiophosphates are preferred, particularly zincdialkyldithiophosphate (ZDDP). The base stock is derived from a waxy, Fischer-Tropsch synthesized hydrocarbon feed fraction comprising hydrocarbons having an initial boiling point in the range of about 650-750° F., by a process which comprises hydroisomerizing the feed and dewaxing the isomerate. The lubricant may also contain hydrocarbonaceous and synthetic base stock material in admixture with the Fischer-Tropsch derived base stock.Type: GrantFiled: November 9, 2001Date of Patent: August 26, 2003Assignee: ExxonMobil Research and Engineering CompanyInventors: Paul J. Berlowitz, Jacob J. Habeeb, Robert J. Wittenbrink
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Patent number: 6544937Abstract: A lubricating composition containing naphthenic basestocks has demulsification properties improved by the addition of a demulsification additive selected from oxyalkylated glycols, esters of oxyalkylated glycols and mixtures thereof.Type: GrantFiled: March 22, 2002Date of Patent: April 8, 2003Assignee: ExxonMobile Research and Engineering CompanyInventors: William Donald Hewson, Terrence Edward Addley
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Patent number: 6541525Abstract: A process for rejuvenating reversibly deactivated catalyst particles in a three-phase slurry body of gas bubbles and catalyst particles in a slurry liquid, includes passing slurry from the top down to the bottom of the body through a slurry catalyst rejuvenating means. The slurry is sequentially passed through a first gas bubble reducing zone, a catalyst rejuvenating gas contacting zone, a second gas bubble reducing zone and then a downcomer transfer zone. The gas bubble reducing, contacting and at least a portion of transfer occur in slurry body. At least part of the means is in the slurry body.Type: GrantFiled: March 27, 2001Date of Patent: April 1, 2003Assignee: ExxonMobil Research and Engineering CompanyInventor: Claude Clarence Culross