Patents Examined by Sharon A. Gibson
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Patent number: 5858030Abstract: A diesel fuel composition is set forth for an increased cetane number vis-a-vis conventional diesel fuel compositions. The composition generally comprises one or more compounds selected from the dialkoxy alkane (DAAK) chemical family. In a preferred embodiment of the present invention, the diesel fuel composition consists of moderate amounts of dimethoxy propane (DMPP) and dimethoxy ethane (DMET) blended into a conventional diesel fuel.Type: GrantFiled: September 23, 1997Date of Patent: January 12, 1999Assignee: Air Products and Chemicals, Inc.Inventors: Francis J. Waller, Edward L. Weist, Jr., Dennis M. Brown, Petrus J. A. Tijm
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Patent number: 5840666Abstract: A grease composition comprising a base oil, a thickener selected from a metallic soap and a urea compound, and an inorganic filler having an average particle size of not greater than 2 .mu.m, and a rolling bearing having sealed therein a grease composition comprising a base oil, a urea thickener, and an inorganic filler having an average particle size of not greater than 2 .mu.m.Type: GrantFiled: December 20, 1996Date of Patent: November 24, 1998Assignee: NSK Ltd.Inventors: Atsushi Yokouchi, Hideki Koizumi, Kenichi Iso, Michiharu Naka
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Patent number: 5837159Abstract: A chemical composition is disclosed herein for performing a complex neutralization and fixation of embalming fluids, providing a method for the rapid neutralization of formaldehyde vapors, the control of incidental releases, detoxification and disposal of unused or spent embalming fluids, and of any unused or spent aqueous or non-aqueous formaldehyde solutions. The composition includes alkanolamines for rapid reaction with formaldehyde vapors, aqueous and non-aqueous solutions of formaldehydes, for absorbing hydrogen sulfide and carbon dioxide from the air, and cyclodextrins for inclusion complexation of all the components of spent and/or unused embalming fluids.Type: GrantFiled: September 23, 1996Date of Patent: November 17, 1998Inventors: Gabriel J. Farkas, Michel Iskarous
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Patent number: 5830383Abstract: A method of treating an aqueous system is described which comprises incorporating in the system a hydroxylamine derivative of the general formula: ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 which may be the same or different represents hydrogen, alkyl of 1 to 8 carbon atoms or aryl or a water soluble salt thereof or a precursor thereof, and a tannin in a weight ratio of at least 2:1. This is particularly useful for boiler water systems.Type: GrantFiled: April 19, 1995Date of Patent: November 3, 1998Assignee: BetzDearborn Inc.Inventors: Brian Greaves, Stephen Clifford Poole, Chih Ming Hwa, Joseph Chwei-Jer Fan
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Patent number: 5820640Abstract: A novel diesel engine fuel is in the form of a pyrolysis liquid-in-diesel oil microemulsion fuel comprising: (a) diesel oil in an amount sufficient to form a continuous phase in the composition; (b) a pyrolysis liquid forming a discontinuous phase in the composition, this pyrolysis liquid being a liquid obtained by rapid pyrolysis of biomass; and (c) at least one emulsifier selected from nonionic hydrophilic surfactants with HLB between 4 and 18, derived from fatty acids and polyoxyethylene glycol, or fatty acids, sorbitol and polyoxyethylene or polyethoxylated alcohols with long aliphatic chains. This fuel has excellent stability and physical properties similar to those of regular diesel fuel.Type: GrantFiled: July 9, 1997Date of Patent: October 13, 1998Assignee: Natural Resources CanadaInventors: Michio Ikura, Siamak Mirmiran, Maria Stanciulescu, Henry Sawatzky
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Patent number: 5814111Abstract: The present invention provides a gasoline composition comprising a major amount of a gasoline suitable for use in spark-ignition engines, a minor amount of a polyalphaolefin having a viscosity at 100.degree. C. from about 2.times.10.sup.-6 m.sup.2 /s to about 2.times.10.sup.-5 m.sup.2 /s (2 to 20 centistokes), being a hydrogenated oligomer containing from 18 carbon atoms to 80 carbon atoms derived from at least one alphaolefinic monomer containing from 8 carbon atoms to 16 carbon atoms, and a minor amount of a polyoxyalkylene compound selected from glycols, mono- and diethers thereof, having number average molecular weight (M.sub.n) from about 400 to about 3000, the weight ratio of polyalphaolefin:polyoxyalkylene compound being from about 1:10 to about 10:1 and a concentrate for the preparation of such gasoline compositions.Type: GrantFiled: August 6, 1996Date of Patent: September 29, 1998Assignee: Shell Oil CompanyInventors: Joseph Graham, Cornelis Van Es
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Patent number: 5811026Abstract: A method of inhibiting corrosion and the formation of hydrogen and thus improving absorption in an ammonia/water absorption refrigeration, air conditioning or heat pump system by maintaining the hydroxyl ion concentration of the aqueous ammonia working fluid within a selected range under anaerobic conditions at temperatures up to 425.degree. F. This hydroxyl ion concentration is maintained by introducing to the aqueous ammonia working fluid an inhibitor in an amount effective to produce a hydroxyl ion concentration corresponding to a normality of the inhibitor relative to the water content ranging from about 0.015 N to about 0.2 N at 25.degree. C. Also, working fluids for inhibiting the corrosion of carbon steel and resulting hydrogen formation and improving absorption in an ammonia/water absorption system under anaerobic conditions at up to 425.degree. F. The working fluids may be aqueous solutions of ammonia and a strong base or aqueous solutions of ammonia, a strong base, and a specified buffer.Type: GrantFiled: August 14, 1996Date of Patent: September 22, 1998Assignee: Phillips Engineering CompanyInventors: Benjamin A. Phillips, Eugene P. Whitlow
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Patent number: 5807496Abstract: Compositions comprising polyamine and melamine polymers in certain ratios are provided for coagulating suspended solids in wastewaters such as deinking process waters and raw waters.Type: GrantFiled: September 19, 1996Date of Patent: September 15, 1998Assignee: Cytec Technology Corp.Inventor: Gerald Guerro
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Patent number: 5808145Abstract: Dispersant detergent additives for lubricating oils prepared by neutralization, carboxylation, sulfurization-overalkalinization, carbonation, distillation, filtering and degassing from alkyl phenols containing 35-85% by weight of linear alkyl substituents. The process does not require, during the neutralizing phase, the presence of a third solvent, which, by forming an azeotropic mixture with water promotes the elimination of water arising from the neutralizing reaction. The additives of the invention have improved stability to hydrolysis and improved dispersion properties, improved compatibility and improved foaming properties.Type: GrantFiled: November 25, 1996Date of Patent: September 15, 1998Inventors: Jean-Louis Le Coent, Jacques Cazin, Thierry Triconnet, William W. Willis, Jr.
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Patent number: 5807813Abstract: A lubricating oil composition comprising a base oil, (A) at least one compound selected from the group consisting of molybdenum dithiocarbamate and molybdenum dithiophosphate, and (B) an aromatic compound having at least one functional group selected from the group consisting of hydroxyl group, carboxyl group, mercapto group, and thiocarboxyl group on the aromatic ring. The lubricating oil composition maintains the low friction property to achieve sustained low fuel consumption during the use and also enables using the organic molybdenum compound added as the friction modifier in a smaller amount than the amount required in conventional lubricating oil compositions.Type: GrantFiled: March 14, 1997Date of Patent: September 15, 1998Assignee: Idemitsu Kosan Co., Ltd.Inventor: Ryou Yamada
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Patent number: 5801130Abstract: This invention relates to synthetic based turbo oils, preferably polyol ester-based turbo oils which exhibit exceptional load-carrying capacity by use of a synergistic combination of sulfur (S)-based and phosphorous (P)-based load additives. The S-containing additives of the present invention are DMTD and its derivative including the capped DMTD and the DMTD dimer, and the P-containing component is one or more amine phosphates. The turbo oil composition consisting of the dual P/S additives of the present invention achieves an excellent load-carrying capacity, which is better than that obtained when each additive was used alone at a treat rate higher than or comparable to the total combination additive treat rate, and the lower concentration requirement of the P-based additive allows the turbo oil composition to meet US Navy MIL-L-23699 requirement on the Si seal compatibility.Type: GrantFiled: March 7, 1997Date of Patent: September 1, 1998Assignee: Exxon Research and Engineering CompanyInventors: Manual A. Francisco, Paul Joseph Berlowitz, Jeenok T. Kim
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Patent number: 5792727Abstract: Lubricant composition containing spherical particles of a ceramic material dispersed in a supporting vehicle. The composition is used as a lubricant, metalworking cooling fluid, drilling fluid or drilling mud.Type: GrantFiled: February 15, 1996Date of Patent: August 11, 1998Inventor: Norman Laurie Jacobs
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Patent number: 5785895Abstract: A method for inhibiting corrosion in an aqueous medium is disclosed. The method comprises incorporating into the medium an amount of a water-soluble corrosion inhibitor sufficient to inhibit corrosion. The corrosion inhibitor comprises an N-ethoxy, 2-substituted imidazoline, the N-ethoxy substituent having from one to about thirty ethoxy units and the 2-substituent being an unsaturated or polyunsaturated fatty chain of from about six to about thirty carbons. If the medium is sweet, the inhibitor further comprises a phosphate ester derived from a water-soluble oxyethylated, straight chain alcohol of from about two to about thirty carbons. Corrosion inhibitor compositions useful in such method are also disclosed.Type: GrantFiled: December 6, 1995Date of Patent: July 28, 1998Assignee: Petrolite CorporationInventors: Richard L. Martin, Jo Ann McMahon, Bernardus A. Oude Alink
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Patent number: 5785896Abstract: A method of combating corrosion of a metal which comprises contacting such metal with a composition containing polyamino acids, their salts and their anhydrides, together with at least one corrosion inhibitor selected from the group consisting of benzotriazole, 4-C.sub.1 -C.sub.4 -alkylbenzotriazoles and 5-C.sub.1 -C.sub.4 -alkylbenzotriazoles.Type: GrantFiled: October 31, 1995Date of Patent: July 28, 1998Assignee: Bayer AktiengesellschaftInventors: Heinz-Joachim Rother, Franz Kunisch
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Patent number: 5785888Abstract: A method for removing sulfur dioxide from gas streams, comprising contacting the gas stream with the aqueous absorption liquid, transferring the liquid to another location, then mildly heating the liquid to recover the sulfur dioxide. This absorption liquid allows removal of 99.9% of the sulfur dioxide, the recovery of very pure sulfur dioxide, is resistant to upsets due to variations in the gas stream, and is cost effective.Type: GrantFiled: March 24, 1995Date of Patent: July 28, 1998Assignee: Milmac Operating CompanyInventors: Chien Kuei Tsai, Johnson H. Y. Fung, Raghu S. Narayan
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Patent number: 5779938Abstract: The invention is an effective, easy to produce, and economical corrosion inhibitor which can be used in a variety of environments. The corrosion inhibitor of the present invention is the salt of certain tertiary amines. The corrosion inhibitor is the reaction product of one or more tertiary amines and certain carboxylic acids, preferably a mixture of mercaptocarboxylic and carboxylic acids.Type: GrantFiled: August 24, 1995Date of Patent: July 14, 1998Assignee: Champion Technologies, Inc.Inventors: Ali Naraghi, Philippe Prince
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Patent number: 5779939Abstract: Corrosion prevention compositions which contain lactobionic acid N-alkylamides, and further having a pH below 9.0, are described. In particular, lactobionic acid N-alkylamides in which the saturated or unsaturated alkyl group bonded via the amide function has a chain length of 8 to 18 carbon atoms show a good corrosion-inhibiting action. The use of lactobionic acid N-alkylamides in corrosion prevention compositions and metalworking compositions is also described.Type: GrantFiled: February 13, 1996Date of Patent: July 14, 1998Assignee: Solvay Deutschland GmbHInventors: Klaus-Guenter Gerling, Helge Rau, Kornelia Wendler, Petra Schwarz, Karlheinz Uhlig
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Patent number: 5777110Abstract: The present invention provides certain 3-aryl-5,6-dihydro-1,4,2-ocathiazines and their oxides, useful for the long-term preservation of wood and composite wood materials against wood damaging and wood destroying materials. The present invention also provides compositions containing these 3-aryl-5,6-dihydro-1,4,2-oxathiazines and their oxides, and a suitable vehicle therefor. A method of preserving wood is also disclosed in which a fungicidally or bactericidally effective amount of the present 3-aryl-5,6-dihydro-1,4,2-oxathiazines and their oxides, are applied to the wood substrate to be protected.Type: GrantFiled: August 24, 1994Date of Patent: July 7, 1998Assignees: Uniroyal Chemical Company, Inc., Uniroyal Chemical Ltd./LteeInventors: Robert Allan Davis, Alex R. A. Valcke, Walter Gerhard Brouwer
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Patent number: 5776362Abstract: A sludge dehydrating agent which is excellent in storage stability and prevented from becoming water-insoluble during storage and hence can be distributed in the market securely by solving the problem of the conventional dehydrating agents comprising amphoteric polymers that they undergo deterioration and become water-insoluble when stored for long, thus becoming substantially unusable. This dehydrating agent comprises a copolymer composed of cationic vinyl monomer units, vinylic carboxylic acid monomer units and nonionic vinyl monomer units and a salt of a group IIA metal of the periodic table. Preferable examples of the vinylic carboxylic acid monomer include acrylic, methacrylic and crotonic acids, while those of the nonionic vinyl monomer include acrylamide and methacrylamide. The metal salts usable herein include those of mineral acids and organic carboxylic acids, and preferable mineral acid salts include calcium chloride, magnesium chloride and magnesium sulfate.Type: GrantFiled: August 23, 1994Date of Patent: July 7, 1998Assignees: Kurita Water Industries Ltd., Sanyo Chemical Industries Ltd.Inventors: Shigeru Sato, Hisao Ohshimizu, Shinobu Kawaguchi
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Patent number: 5776869Abstract: An aviation lubricating oil composition comprises a major amount of base stock oil and a minor amount of triaryltin polyphenyl ether wherein the triaryl groups are phenyl or phenoxyphenol. A method is disclosed for preparation of the tin compounds by reacting polyphenyl ether with t-butyllithium followed by quenching with triphenylstannyl halide.Type: GrantFiled: July 29, 1997Date of Patent: July 7, 1998Assignee: R.T. Vanderbilt Company, Inc.Inventor: Thomas J. Karol