Patents Examined by Jacqueline Howard
  • Patent number: 5707944
    Abstract: A grease composition comprising a base oil containing not less than 10% by weight of an ester oil based on the total base oil and having a kinematic viscosity of 50 to 200 mm.sup.2 /sec at C. and 15 to 35% by weight, based on the total grease composition, of a diurea compound represented by formula (I): ##STR1## wherein R.sub.2 represents an aromatic hydrocarbon group having 6 to 15 carbon atoms; and R.sub.1 and R.sub.3, which may be the same or different, each represent an aromatic hydrocarbon group having 6 to 12 carbon atoms or an aliphatic hydrocarbon group having 8 to 20 carbon atoms, the proportion of the aromatic hydrocarbon groups in the total of R.sub.1 and R.sub.3 being 50 to 100 mol %. When applied to outer race rotating bearings, the grease composition is excellent in flaking resistance, leak resistance, and low noise properties and prevents premature seizing under high temperature and high speed conditions.
    Type: Grant
    Filed: October 17, 1995
    Date of Patent: January 13, 1998
    Assignees: NSK Ltd., Kyodo Yushi Co., Ltd.
    Inventors: Atsushi Yokouchi, Hideki Koizumi, Kenichi Iso, Michiharu Naka, Toshiaki Endo, Yoichi Suzuki
  • Patent number: 5518511
    Abstract: A multi-functional gasolene detergent composition providing good balance of properties leading to reduced engine deposits, little or no valve stick, and without effect on Octane Requirement Increase. The composition contains an polyisobutenyl succinimide detergent, a mono end-capped polypropylene glycol as the carrier oil and a hydrocarbon solvent.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: May 21, 1996
    Assignee: The Associated Octel Company Limited
    Inventors: Trevor Russell, Miltiades Papachristos, Jeremy Burton, Antony Cooney
  • Patent number: 5256165
    Abstract: A multi-functional motor fuel additive comprising (a) a mono-polyalkenylsuccinimide, (b) a bis-polyalkenylsuccinimide and (c) a heavy oil is provided. A motor fuel composition comprising a major portion of a base fuel and a minor portion, sufficient to provide port fuel injector and intake valve detergency, of the multi-functional motor fuel additive of the present invention and a concentrate of the multi-functional motor fuel additive of the present invention are also provided.
    Type: Grant
    Filed: January 6, 1992
    Date of Patent: October 26, 1993
    Assignee: Texaco Inc
    Inventors: Sheldon Herbstman, Benjamin J. Kaufman, William H. Bitting, Peter J. Choate
  • Patent number: 5227551
    Abstract: There is disclosed a method of suppressing misting or spatting from an oil-containing functional fluid, such as a chain saw lubricant, by blending with the functional fluid a mist suppressing effective amount of a copolymer of a C.sub.3 or C.sub.4 alpha-monoolefin and at least one other alpha-monoolefin having from 5 to about 20 carbon atoms, said copolymer having a viscosity average molecular weight of from about 500,000 to about 10 million.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: July 13, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Harold E. Bachman, Chung K. Shih
  • Patent number: 5225092
    Abstract: The present invention is directed to an oil-soluble lubricating oil additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 20,000 number average molecular weight terminally substituted with amine compounds, which are also useful additives to oleaginous compositions, e.g., as fuel and lubricating oil dispersants.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: July 6, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jacob Emert, Alan M. Schilowitz, Antonio Gutierrez, Won R. Song
  • Patent number: 5215547
    Abstract: This invention relates to novel hexahydrotriazine compounds, a process for their production and their use as additives for fuels and oleaginous fluids.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: June 1, 1993
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: John G. Bostick, Lawrence J. Cunningham
  • Patent number: 5210346
    Abstract: A synthetic oil composition comprises a major portion by weight of synthetic base oil having a kinetic viscosity of from about 1.5 to 2.5 cSt at C. and a minor portion by weight of one or more property enhancing additives for said base oil, said base oil comprising a major portion by weight of dimer of 1-decene, said dimer having a kinetic viscosity of less than about 250 cSt at C., a kinetic viscosity of less than about 1,000 cSt at C. and a pour point of less than about C.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: May 11, 1993
    Assignee: Ethyl Corporation
    Inventor: Thomas J. Dileo
  • Patent number: 5207935
    Abstract: An improved smoother extreme pressure wear-resistant wheel bearing grease provides high temperature bearing life. These qualities are attributable to a special combination of additives blended in the greases, including: succinate, sulfonate, phosphate, carbonate, and sodium nitrite.
    Type: Grant
    Filed: April 7, 1992
    Date of Patent: May 4, 1993
    Assignee: Amoco Corporation
    Inventor: John A. Waynick
  • Patent number: 5205949
    Abstract: An additive composition comprising a graft and derivatized block copolymer prepared from a styrene-ethylenebutylene-styrene characterized in that unsaturation in the styrene blocks is equal to or greater than 50 percent, and the ethylenebutylene block is hydrogenated leaving no more than 10 percent unsaturation which has been grafted with at least one olefinic carboxylic acid acylating agent and then derivatized with an aminoaromatic compound from the group consisting of aminopyridines, aminopyrazines and aminopyrimidines, and a lubricating oil composition containing same are provided.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: April 27, 1993
    Assignee: Texaco Inc.
    Inventors: Theodore E. Nalesnik, Benjamin J. Kaufman, James G. Dadura
  • Patent number: 5203879
    Abstract: An amido alkanolamine composition obtained by reacting, at a temperature of C.:(a) a 4-alkyl-2-morpholinone represented by the formula: ##STR1## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms, and(b) a hydrocarbyl oxypolyoxyalkylene amine represented by the formula: ##STR2## in which R' represents an alkyl, an alicyclic, or a alkylalicyclic radical having from 8 to 30 carbon atoms, x has a value from 5 to 50, and R" represents a methyl radical or a mixture of hydrogen and methyl radicals is provided.
    Type: Grant
    Filed: September 1, 1992
    Date of Patent: April 20, 1993
    Assignee: Texaco Inc.
    Inventors: Wei-Yang Su, Sheldon Herbstman, Joseph M. Russo, Robert L. Zimmerman, Michael Cuscurida
  • Patent number: 5203878
    Abstract: A fuel oil additive is prepared by combining a mixture of diesel oil and camphor, with a mixture of petroleum oil and benzoic acid. Additional diesel oil and turpentine are added to the combination to form one component of the additive. Such component is combined with a second component comprising a combination of Turkey red oil and water to form the additive. The additive is subsequently combined with the fuel oil to be burned and water from a combustible product. Preferably, the product is aged before burning.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: April 20, 1993
    Inventors: Benjamin E. Woomer, Lin H. Yen, Chu K. Sing
  • Patent number: 5202038
    Abstract: The invention relates to the salts formed by a fatty amine with a mixture containing at least one monocarboxylic acid R.sub.F (CH.sub.2).sub.10 COOH and at least one dicarboxylic acid of formula: ##STR1## where R.sub.F denotes a C.sub.4 -C.sub.16 perfluoroalkyl radical, wherein these salts can be employed as antiwear additives for lubricants.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: April 13, 1993
    Assignee: ELF Atochem S.A.
    Inventors: Elisabeth Schoch, Christian Collette
  • Patent number: 5202036
    Abstract: A diesel lubricant exhibiting improved ability to minimize undesirable viscosity increases when used in diesel engines is described. More particularly, in accordance with the present invention, a diesel lubricant is described which comprises a major amount of an oil of lubricating viscosity and a minor amount, sufficient to minimize undesirable viscosity increases of the lubricant when used in diesel engines, of a composition comprising (A) at least one carboxylic derivative composition produced by reacting at least one substituted succinic acylating agent with at least one amino compound containing at least one --NH-- group wherein said acylating agent consists of substituent groups and succinic groups wherein the substituent groups are derived from polyalkene characterized by an Mn value of at least about 1200 and an Mw/Mn ratio of at least about 1.5, and wherein said acylating agents are characterized by the presence within their structure of an average of at least about 1.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: April 13, 1993
    Assignee: The Lubrizol Corporation
    Inventors: David E. Ripple, Jack L. Karn, Daniel M. Vargo
  • Patent number: 5202037
    Abstract: A high solids lubricant system suitable for use in aqueous lubricating systems is disclosed. The high solids lubricant first gels and then solubilizes in the aqueous lubricant stream. In a preferred embodiment, the aqueous stream further contains a water conditioning system.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: April 13, 1993
    Assignee: Diversey Corporation
    Inventors: Grant E. Lavelle, Charles Rossio, Dwight Davis
  • Patent number: 5200101
    Abstract: Arylamine/hindered phenol, acid anhydride and thioester-derived reaction products, have been found to be effective multifunctional antioxidant, antiwear and rust inhibiting additives for lubricants and fuels.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: April 6, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Shin-Ying Hsu, Andrew G. Horodysky, Douglas E. Johnson, David A. Blain
  • Patent number: 5200106
    Abstract: Methods for utilizing transition metals as tracers in aqueous liquid systems are provided by this invention. Transition metals with low background levels in system waters are identified as preferred when soluble in said aqueous liquid systems. The transition metals show low levels of deposition on equipment scale and provide reliable information as to the process history of the liquid systems.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: April 6, 1993
    Assignee: Nalco Chemical Company
    Inventors: John E. Hoots, Rodney H. Banks, Donald A. Johnson
  • Patent number: 5200103
    Abstract: The present invention is directed to oil-soluble lubricating oil additives comprising Mannich Base condensates of an alkyl substituted hydroxy aromatic compound with formaldehyde and an amine, wherein the alkyl-moiety of the aromatic compounds is derived from at least one ethylene alpha-olefin copolymer of 300 to 20,000 number average molecular weight, wherein at least about 30% of the polymer's chains contain terminal ethenylidene unsaturation. The Mannich Base condensates of this invention are useful as dispersants.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: April 6, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Won R. Song, Robert D. Lunberg, Antonio Gutierrez, Robert A. Kleist
  • Patent number: 5200099
    Abstract: Dialky and trialky phosphites are reacted with sulfur. The resulting product is the desired lubricant additive which is mixed with suitable lubricating oils.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: April 6, 1993
    Assignee: Mobil Oil Corporation
    Inventor: Angeline B. Cardis
  • Patent number: 5199959
    Abstract: A method has been developed to solubilize hydroxy S-triazines containing at least one hydroxy function in diesel fuel and to enhance their overall thermal stability. The products which result from the full or partial encapsulation of hydroxy-S-triazine with calix[8]arene have unique and novel properties and reduce or eliminate nitrogen oxides level in diesel fuel.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: April 6, 1993
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Thomas F. Derosa, Benjamin J. Kaufman
  • Patent number: 5198136
    Abstract: An iodine-containing compound consisting of at least two repeating units selected from the formulae:--(CH.sub.2 CF.sub.2 CF.sub.2 O).sub.a ----(CHClCF.sub.2 CF.sub.2 O).sub.b ----(CCl.sub.2 CF.sub.2 CF.sub.2 O).sub.c ----(CHFCF.sub.2 CF.sub.2 O).sub.d ----(CFClCF.sub.2 CF.sub.2 O).sub.e ----(CF.sub.2 CF.sub.2 CF.sub.2 O).sub.f --wherein a, b, c, d, e and f are each 0 or a positive integer and satisfy the following equations:2.ltoreq.a+b+c+d+e+f.ltoreq.200 and1.ltoreq.a+c+d+fand an iodine atom at at least one end of a molecule, which can provide a block copolymer which is useful as a grease.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: March 30, 1993
    Assignee: Daikin Industries Ltd.
    Inventors: Masayoshi Tatemoto, Yuji Yutani, Koji Fujiwara