Patents Examined by Andrew Metz
  • Patent number: 4428850
    Abstract: A low foaming lubricating oil composition comprising a mineral oil, an oil soluble detergent-like additive which increases the foaming tendency of the lubricating oil, and an effective amount of an estolide of a hydroxy fatty acid having 10 to 24 carbon atoms which reduces the foaming tendency of the lubricating oil composition. The lubricating oil achieves the low foaming tendency without added silicone polymers and has a silicon content of less than about 10 parts per million by weight. The preferred estolide is the estolide of 12-hydroxystearic acid.
    Type: Grant
    Filed: January 28, 1982
    Date of Patent: January 31, 1984
    Assignee: Texaco Inc.
    Inventors: Benjamin H. Zoleski, Frank J. Gaetani
  • Patent number: 4428861
    Abstract: A novel process for reducing Mo(V) or Mo(VI) dialkyldithiophosphates to Mo(IV) dialkyldithiophosphates with H.sub.2 S is provided. Homologues higher than the ethyl compound are oil soluble and novel. Lubricant compositions containing same provide reduced wear and friction.
    Type: Grant
    Filed: October 23, 1981
    Date of Patent: January 31, 1984
    Assignee: Mobil Oil Corporation
    Inventor: Robert F. Bridger
  • Patent number: 4427563
    Abstract: Hydrocracked lubricating oils are effectively stabilized against deterioration caused by light by the inclusion of at least one of certain dihydroxy-diphenyl components. Such components, e.g., 4,4'-bis(2,6-di-tertiary butyl phenol), provide outstanding inhibition to sunlight deterioration.
    Type: Grant
    Filed: May 15, 1980
    Date of Patent: January 24, 1984
    Assignee: Atlantic Richfield Company
    Inventor: David A. Hutchison
  • Patent number: 4426305
    Abstract: Lubricating oil dispersancy is synergistically improved by use of a combination of (a) a boronated hydrocarbon-substituted succinic amide/imide/ester of an oxyalkylated amine and (b) a Mannich condensation product of a hydrocarbon-substituted phenol, formaldehyde, and amine, and optionally, a fatty acid and or a boronating agent.
    Type: Grant
    Filed: June 1, 1983
    Date of Patent: January 17, 1984
    Assignee: Edwin Cooper, Inc.
    Inventor: Robert E. Malec
  • Patent number: 4425249
    Abstract: A Mannich condensation reaction of an alkyl phenol, a formaldehyde-yielding reagent, an amine, and about 0.001 to 2.0 moles of an oil soluble benzene sulfonic acid per mole of amine.
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: January 10, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventors: Paul J. Cahill, Edmund J. Piasek, deceased, by Evelyn W. Hunt, administrator
  • Patent number: 4425138
    Abstract: Lubricating oils containing at least one amino phenol of the general formula ##STR1## wherein R is a substantially saturated, hydrocarbon-based group of at least about 10 aliphatic carbon atoms, a, b and c are, for example, each 1, 2 or 3, and Ar is an aromatic moiety such as a benzene nucleus, naphthalene nucleus or linked benzene nuclei, are effective in lubricating two-cycle internal combustion engines. Typically such amino phenols for this use are formed by nitration and reduction of alkyl phenols having an alkyl or alkenyl group of at least about 50 carbon atoms.
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: January 10, 1984
    Assignee: The Lubrizol Corporation
    Inventor: Kirk E. Davis
  • Patent number: 4425245
    Abstract: A Mannich condensation reaction of an alkyl phenol, a formaldehyde-yielding reagent, an amine, and about 0.001 to 2.0 moles of an oil soluble benzene sulfonic acid per mole of amine.
    Type: Grant
    Filed: September 11, 1981
    Date of Patent: January 10, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventors: Paul J. Cahill, Edmund J. Piasek, deceased, by Evelyn W. Hunt, administratrix
  • Patent number: 4425248
    Abstract: Water soluble lubricant compositions comprising alkanolamine and organic acid are improved by employing as the organic acid a partial acid amide of a dicarboxylic acid, such as mono-PRIMENE 81 R amide of succinic acid, mono-di-2-ethylhexylamide of maleic acid, mono-di-2-ethylhexylamide of methyltetrahydrophthalic acid and mono-di-2-ethylhexylamide of methylhexahydrophthalic acid as the organic acid.
    Type: Grant
    Filed: December 18, 1981
    Date of Patent: January 10, 1984
    Assignee: Mobil Oil Corporation
    Inventors: Alfred B. Piotrowski, Robert H. Davis
  • Patent number: 4420407
    Abstract: A cylinder lubricating oil composition characterized by having a Total Base Number from about 50 to 100 comprising a mineral lubricating oil, from 10 to 20 percent of an overbased calcium sulfonate and an N-hydroxyethyl alkenylsuccinimide represented by the formula: ##STR1## in which R is a straight chain hydrocarbon radical having form about 8 to 22 carbon atoms.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: December 13, 1983
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Benjamin H. Zoleski, William P. Cullen, Mahmoud S. Kablaoui
  • Patent number: 4419255
    Abstract: Lubricating oil characterized by improved friction reduction contains friction reducing amounts of a keto amide prepared by the reaction of an amine and an unsaturated cyclic keto acid bearing pendant alkyl groups.
    Type: Grant
    Filed: February 1, 1982
    Date of Patent: December 6, 1983
    Assignee: Texaco Inc.
    Inventors: Benjamin J. Kaufman, Robert A. Sawicki, Stephen A. Levine
  • Patent number: 4414122
    Abstract: Molybdenum compositions suitable for improving the properties of lubricants and fuels comprise the reaction product of molybdenum and a polyamine Mannich reaction product, a polyamine hydrocarbyl-substituted dicarboxylic acid compound reaction product, and the oxidized and/or sulfurized reaction products thereof.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: November 8, 1983
    Assignee: Standard Oil Company (Indiana)
    Inventors: C. Thomas West, Robert J. Basalay
  • Patent number: 4414123
    Abstract: The spreadability of marine diesel cylinder oils is improved by the incorporation therein of a polyoxyethylene sorbitol lanolin of the formula: ##STR1## /wherein n ranges from 14 to 16.
    Type: Grant
    Filed: June 1, 1981
    Date of Patent: November 8, 1983
    Assignee: Texaco Inc.
    Inventors: Benjamin H. Zoleski, Rodney L. Sung
  • Patent number: 4411805
    Abstract: A class of N,N',N"-trisubstituted bis-(p-aminobenzyl)anilines are found to be effective antioxidants in a broad spectrum of petroleum and petroleum related products. Trialkyl, tri(arylmethyl), and tri(heteroarylmethyl) substituted materials of the parent compound are especially effective at concentrations as low as about 0.0005 percent by weight.
    Type: Grant
    Filed: January 8, 1982
    Date of Patent: October 25, 1983
    Assignee: UOP Inc.
    Inventor: John T. Roberts
  • Patent number: 4411804
    Abstract: An improved lubricating oil composition comprising a major amount by weight of oil of lubricating viscosity, a minor amount by weight of solid particles effective to improve the lubricating properties of the composition; and a minor amount of certain dispersant --VI improver materials. This composition provides improved inhibition of sludge and varnish formation in use.
    Type: Grant
    Filed: June 6, 1978
    Date of Patent: October 25, 1983
    Assignee: Atlantic Richfield Company
    Inventors: Donald L. DeVries, James M. DeJovine
  • Patent number: 4410435
    Abstract: A lithium complex grease for rolling bearings which has high dropping points and is capable of maintaining for a long time an excellent stability of a thickener micell under a high temperature, high adhesion, heat resistance, water resistance, rust resistance, load resistance, low noises and other high-level properties and a method of producing such lithium complex grease. The lithium complex greases are characterized in that base greases containing a base oil, a fatty acid having 12 to 24 carbon atoms, a dicarboxylic acid having 4 to 12 carbon atoms and/or a dicarboxylic acid ester and a lithium hydroxide are thickened with a phosphate ester and/or a phosphite ester. A method of producing the lithium complex greases is characterized in that the base greases having the above composition are added by the phosphate ester and/or the phosphite ester, and thickened under a reaction at a temperature of more than 210.degree. C. (410.degree. F.).
    Type: Grant
    Filed: December 29, 1981
    Date of Patent: October 18, 1983
    Assignee: Nippon Seiko Kabushiki Kaisha
    Inventors: Michiharu Naka, Takayuki Yatabe, Hideki Koizumi
  • Patent number: 4410437
    Abstract: Dispersant lubricating oil additives are prepared by reacting oil-soluble dispersant compositions containing at least one primary or secondary amino group with SO.sub.2.
    Type: Grant
    Filed: March 13, 1981
    Date of Patent: October 18, 1983
    Assignee: Chevron Research Company
    Inventor: Timothy R. Erdman
  • Patent number: 4410438
    Abstract: Lubricant and liquid fuel compositions containing a product made by reacting a boronating agent with a hydrocarbyl epoxide are provided. The invention also provides the product per se.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: October 18, 1983
    Assignee: Mobil Oil Corporation
    Inventor: Andrew G. Horodysky
  • Patent number: 4410490
    Abstract: New nickel and cobalt base alloys containing tungsten and carbon are disclosed. The alloys are subjected to rapid solidification processing (RSP) technique which produces cooling rates between 10.sup.5 .degree. to 10.sup.7 .degree. C./sec. The as-quenched ribbon, powder, etc. consists predominantly of amorphous phase. The amorphous phase is subjected to suitable heat treatments so as to produce a transformation to a microcrystalline alloy which includes carbides; this heat treated alloy exhibits high hardness combined with toughness for many applications wherein superhard materials are required.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: October 18, 1983
    Assignee: Marko Materials, Inc.
    Inventors: Ranjan Ray, Viswanathan Panchanathan
  • Patent number: 4410434
    Abstract: The invention herein is concerned with novel compositions of matter made by reacting phosphorus pentasulfide with a polyhydroxyester and then followed by reaction with a salt-forming metal-containing compound and lubricant compositions containing same.
    Type: Grant
    Filed: June 17, 1981
    Date of Patent: October 18, 1983
    Assignee: Mobil Oil Corporation
    Inventors: Harry J. Andress, Jr., Andrew G. Horodysky, Joan M. Kaminski
  • Patent number: 4409113
    Abstract: A lubricant composition for hot forging operations is disclosed which includes water and phthalates made by reacting phthalic acids with alkali metal hydroxides. Other additives may be present such as thickeners, extreme pressure (E.P.) additives, suspending agents, germicides, anti-wear agents, pigments, corrosion inhibitors, wetting agents, dyes, and perfumes. A hot forging process based on the above lubricant is also disclosed.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: October 11, 1983
    Assignee: Pennwalt Corporation
    Inventor: Jerome W. Bertell