Patents Represented by Attorney, Agent or Law Firm James H. Takemoto
  • Patent number: 5397487
    Abstract: A combination of succinic anhydride amine derivatives and tetra propenyl succinic acid derivative rust inhibitors has been found to be synergistically effective in reducing the formation of rust in lubricating oils.
    Type: Grant
    Filed: August 26, 1993
    Date of Patent: March 14, 1995
    Assignee: Exxon Research & Engineering Co.
    Inventors: Lilianna Z. Pillon, Lloyd E. Reid, Andre E. Asselin
  • Patent number: 5393811
    Abstract: This invention relates to a composition and method for improving the storage stability of an asphalt that contains a higher molecular weight polymer having a number average molecular weight of at least about 10,000 which comprises adding a storage stable improving amount of a polymerized alpha-olefin prepared from an alpha-olefin of the formula ##STR1## where R is C.sub.6 to C.sub.50 alkyl, R.sup.1 is hydrogen or C.sub.6 to C.sub.50 alkyl, wherein the polymerized alpha-olefin has a number average molecular weight of from about 500 to 5,000 and is characterized in that it has a congealing and melting point which is essentially no higher than the congealing and melting point of the alpha-olefin from which it is prepared.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: February 28, 1995
    Assignee: Exxon Research and Engineering Company
    Inventors: Lyle E. Moran, Katherine L. Sokol
  • Patent number: 5391309
    Abstract: A high dropping point lithium complex soap grease is prepared by dissolving a monocarboxylic fatty acid and a dicarboxylic acid together in oil at a temperature above the boiling point of water and then neutralizing the resulting oil-acid mixture by adding a concentrated aqueous solution of lithium hydroxide monohydrate.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: February 21, 1995
    Assignee: Exxon Research and Engineering Company
    Inventors: Phillip W. Brewster, A. Gordon Alexander, Terrance O. Brown
  • Patent number: 5391313
    Abstract: A refrigerator working fluid which comprises(a) tetrafluoroethane, and(b) a synthetic ester lubricant with a viscosity of about 150 cSt or less at 40.degree. C. and having the formula (R.sub.1 -R.sub.2).sub.n R.sub.3wherein R.sub.1 is ##STR1## in which R.sub.5, R.sub.6 and R.sub.7 are each independently hydrocarbyl group of from 1 to 7 carbon atoms with the proviso that the sum of carbon atoms in R.sub.5 +R.sub.6 +R.sub.7 is from 3 to 9,R.sub.2 is selected from the group consisting of (CH.sub.2 --CH.sub.2 --O--).sub.b, ##STR2## and mixtures thereof, where b is an integer from 1 to 3, R.sub.3 is a monobasic or polybasic carboxylic acid radical of the formula ##STR3## where R.sub.4 is a hydrocarbyl group having m carbon atoms where m is an integer from 1 to 9, andn is an integer from 1 to 4.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: February 21, 1995
    Assignee: Exxon Research and Engineering Company
    Inventors: Shlomo Antika, Thomas G. Dietz, Richard H. Schlosberg, David W. Turner, George A. Weisgerber
  • Patent number: 5389272
    Abstract: The addition of trithiocyanuric acid to a lubricating oil basestock provides a lubricating oil composition showing improved antiwear, friction reducing and/or extreme pressure properties.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: February 14, 1995
    Assignee: Exxon Research & Engineering Co.
    Inventors: Morton Beltzer, Jacob J. Habeeb
  • Patent number: 5385682
    Abstract: A flame retardant grease composition comprising a lubricating base oil, a thickener selected from a simple or complex soap of lithium, calcium or sodium, and a flame retardant additive selected from an oxide, hydroxide, carbonate, bicarbonate, hydrogen carbonate or sulphate of an alkali metal or alkaline earth metal, for example calcium oxide, potassium carbonate, potassium hydrogen carbonate or potassium sulphate, or a mixture of two or more thereof.
    Type: Grant
    Filed: December 24, 1992
    Date of Patent: January 31, 1995
    Assignee: Exxon Research & Engineering Co.
    Inventors: Timothy Hutchings, Kathryn M. Pilgrem
  • Patent number: 5364545
    Abstract: An improved lubricating oil composition having a low coefficient of friction and reduced copper corrosion comprising (a) a lubricating oil basestock, (b) from 0.01 to 10% by weight, based on the oil composition, of at least one organomolybdenum compound selected from the group consisting of oxymolybdenum monoglyceride and oxymolybdenum diethylatoamide; and (c) from 0.5 to 7% by weight, based on the oil composition, of at least one organozinc compound selected from the group consisting of zinc dithiophosphate and zinc dithiocarbamate.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: November 15, 1994
    Assignee: Tonen Corporation
    Inventors: Katsuya Arai, Toshikazu Tsukada, Hirotaka Tomizawa
  • Patent number: 5356547
    Abstract: An improved lubricating oil composition having a low coefficient of friction and reduced copper corrosion comprising (a) lubricating oil basestock, (b) 0.01 to less than 0.2% by weight, based on the oil composition, of at least one organomolybdenum compound selected from the group consisting of sulfurized oxymolybdenum dithiocarbamate and sulfurized oxymolybdenum organophosphorodithioate; and (c) from 0.5 to 7% by weight, based on the oil composition, of at least one organozinc compound selected from the group consisting of zinc dithiophosphate and zinc dithiocarbamate.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: October 18, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Katsuya Arai, Toshikazu Tsukada, Hirotaka Tomizawa
  • Patent number: 5352374
    Abstract: A lubricating oil composition having improved antiwear, antioxidancy and fuel economy properties which comprises a hydroisomerized wax basestock and an alkoxylated amine salt of a dihydrocarbyldithiophosphoric acid of the formula ##STR1## where R.sup.1 and R.sup.2 are each independently hydrocarbyl groups having from 3 to 30 carbon atoms, R.sup.3 is a hydrocarbyl group of 2 to 22 carbon atoms, x and y are each independently integers from 1 to 15 with the proviso that the sum of x+y is from 2 to 20.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: October 4, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Jacob J. Habeeb, Ramon L. Espino, Elisavet P. Vrahopoulou
  • Patent number: 5328577
    Abstract: Low value hydrocarbons can be upgraded by contact with the products formed during irradiation of a hydrogen donor and water using microwave energy in the presence of at least one plasma initiator.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: July 12, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventor: William J. Murphy
  • Patent number: 5326456
    Abstract: A process for upgrading bitumen asphaltenes obtained from tar sands to hydrocarbons which comprises contacting the bitumen with a deasphalting solvent to yield a deasphalted oil and a residual solid asphaltene, separating the residual solid asphaltene from the deasphalted oil and treating the solid asphaltene fraction with superheated water containing a soluble carbonate salt at temperatures of from 300.degree. to 425.degree. C.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: July 5, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: Glen B. Brons, Michael Siskin, Kazimierz O. Wrzeszczynski
  • Patent number: 5321172
    Abstract: Solvent-free lubricant compositions having improved lubricity properties comprising a basestock having a kinematic viscosity of about 1.5 to 3.0 cSt at 100.degree. C., about 3 to 15 wt % of bright stock having a kinematic viscosity about 20 to 40 cSt at 100.degree. C., about 3 to 15 wt % of a polyisobutylene having a number average molecular weight of about 400 to 1050 and about 3 to 15 wt % of a polyisobutylene having a number average molecular weight of about 1150 to 1650. Minor amounts of the lubricant composition may be incorporated into a distillate fuel to provide a lubricant oil-fuel composition for two-cycle engines.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: June 14, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: A. Gordon Alexander, Alan G. Blahey
  • Patent number: 5320739
    Abstract: This invention relates to a method of producing a softer asphalt product with improved low temperature properties and reduced solids buildup from an asphalt feed which comprises measuring the penetration and Penetration Index of the asphalt feed and heat soaking the asphalt feed in the presence of at least one C.sub.1 to C.sub.5 halogenated aliphatic hydrocarbon as dehydrogenation agent wherein from about 0.05 to about 10 wt. % of the dehydrogenation agent, based on weight of the asphalt, is present during heat soaking, at a temperature ranging between about 300.degree. C. and about 400.degree. C., said temperature being sufficient to increase the penetration and Penetration Index over that of the asphalt feed provided that the temperature should not exceed the temperature at which onset of coking occurs and further provided that the asphalt product has a trichloroethylene solubles content of at least about 99.5 wt. %, based on asphalt.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: June 14, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: Lyle E. Moran, William J. Murphy
  • Patent number: 5320766
    Abstract: A lubricating oil composition having improved antiwear, antioxidancy and fuel economy properties which comprises a lubricating oil basestock and an alkoxylated amine salt of a dihydrocarbyldithiophosphoric acid of the formula ##STR1## where R.sup.1 and R.sup.2 are each independently hydrocarbyl groups having from to 30 carbon atoms, R.sup.3 is a hydrocarbyl group of 2 to 22 carbon atoms, x and y are each independently integers from 1 to 15 with the proviso that the sum of x+y is from 2 to 20.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: June 14, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: Jacob J. Habeeb, Morton Beltzer
  • Patent number: 5320767
    Abstract: A lubricant oil composition useful for reducing friction in an internal combustion engine which comprises a lubricating oil basestock and an alkoxylated amine salt of an hydrocarbylsulfonic acid, said salt having the formula ##STR1## where R is a hydrocarbyl group having from 2 to 22 carbon atoms, R.sup.1 is a hydrocarbyl group having from 2 to 30 carbon atoms, x and y are each independently integers of from 1 to 15 with the proviso that the sum of x+y is from 2 to 20.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: June 14, 1994
    Assignee: Exxon Research and Engineering Company
    Inventor: Jacob J. Habeeb
  • Patent number: 5316659
    Abstract: A process for upgrading bitumen asphaltenes obtained from tar sands to hydrocarbons which comprises contacting the bitumen with a deasphalting solvent to yield a deasphalted oil and a residual solid asphaltene, separating the residual solid asphaltene from the deasphalted oil and treating the solid asphaltene fraction with superheated water at temperatures of from 300.degree. to 425.degree. C.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: May 31, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Glen B. Brons, Michael Siskin, Kazimierz O. Wrzeszczynski
  • Patent number: 5308518
    Abstract: A lubricating oil composition having improved antiwear and fuel economy properties which comprises a lubricating oil basestock and an alkoxylated amine salt of a dihydrocarbyldithiobenzoic acid of the formula ##STR1## where R.sup.1 is a hydrocarbyl group having from 2 to 22 carbon atoms, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each independently hydrogen, a hydrocarbyl group containing from 1 to 24 carbon atoms or a hydroxy group with the proviso that at least one of R.sup.2 to R.sup.5 is a hydrocarbyl group, and x and y are each independently integers of from 1 to 15 with the proviso that the sum of x+y is from 2 to 20.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: May 3, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: Jacob J. Habeeb, Morton Beltzer
  • Patent number: 5308522
    Abstract: A lubricant composition which comprises a major amount of a lubricating oil base stock and a minor amount of a benzotriazole of the formula: ##STR1## where R and R.sup.1 are hydrocarbyl groups having from 1 to 30 carbon atoms. The load-carrying properties of the benzotriazoles of the formula (I) are activated by subjecting the lubricant composition to load-carrying conditions.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: May 3, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: Manuel A. Francisco, Thomas L. Ashcraft, Alan R. Katritzky
  • Patent number: 5308517
    Abstract: A composition of matter having utility in lubricant formulations, said composition being the reaction product of adenine, alkoxylated amine and dihydrocarbyldithiophosphoric acid and having the general formula (I): ##STR1## where R is hydrogen or a hydrocarbyl group of from 1 to 20 carbon atoms, R.sup.1 is a hydrocarbyl group of 2 to 22 carbon atoms, R.sup.2 and R.sup.3 are each independently hydrocarbyl groups having from 3 to 30 carbon atoms, x and y are each independently integers of from 1 to 15 with the proviso that the sum of x+y is from 2 to 20, and a, b and c are independent numbers from 1.0 to 3.0 wherein the ratios between a:b, a:c and b:c range from 1.0:3.0 to 3.0:1.0.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: May 3, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Jacob J. Habeeb, Morton Beltzer
  • Patent number: 5298157
    Abstract: A process for depolymerizing coal at low temperatures by contacting finely divided coal with a hard acid and soft base.
    Type: Grant
    Filed: August 4, 1992
    Date of Patent: March 29, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: George M. Kramer, Edwin R. Ernst, Chang S. Hsu