Patents Examined by Rhonda R. Brown
  • Patent number: 4976746
    Abstract: Formulations of additives for engine fuels comprising at least one constituent (A) and one constituent (B) resulting from the reaction of at least one alkenyl or polyalkenyl-succinic derivative with at least one polyamine to form constituent (A) and with at least one 1-(2-hydroethyl) imidazoline substituted in the 2-position by a linear or branched alkyl or alkenyl radical with 1 to 25 atoms of carbon to form constituent (B). The preferred formulations also contain a constituent (C) consisting of at least one polyglycol soluble in said fuel, with an average molecular mass ranging from 480 to 2,100. The (A)/(B) and (A)+(B)/(C) molar ratios preferably are respectively 0.2/1 to 5/1 and 0.05/1 and 20/1.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: December 11, 1990
    Assignee: Institut Francais du Petrole
    Inventors: Jacques Denis, Xavier Montagne, Philippe Mulard, Daniele Eber
  • Patent number: 4929372
    Abstract: A lubricating oil composition for chains which comprises(A) as the base oil, a polyol ester represented by the general formula ##STR1## wherein R.sub.1 is an alkyl group having 1 to 4 carbon atoms, R.sub.2 to R.sub.4 are each an alkyl group having 2 to 17 carbon atoms, a and b are each an integer of 0 to 2 with the proviso that the total of a and b is 2, and n is an integer of 1 to 4, and(B) as an additive, a graphite fluoride represented by the experimental formulaCF.sub.xwherein x is a number of 0.5 to 1.2, in a specified amount of 0.5 to 30% by weight of the composition.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: May 29, 1990
    Assignees: Asahi Glass Co., Ltd., Nippon Oil Co., Ltd.
    Inventors: Hideo Akanuma, Masashi Murata, Kiyoshi Inoue, Ryoji Ohgake
  • Patent number: 4929252
    Abstract: Castor oil extended by addition of an alcohol and water, the mixture then being essentially immune to phase separation or haziness or inadvertent addition of extra water contamination, of a pH range of about 4-121/2 and having a flash point above the United States government regulation permitting the fuel to be shipped interstate as an oil rather than as a volatile solvent or fuel.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: May 29, 1990
    Inventor: Donald D. Brillhart
  • Patent number: 4919684
    Abstract: A stable middle distillate fuel-oil composition which comprises(a) a major portion of a middle distillate fuel-oil; and(b) a minor amount, as a storage stabilizing additive, of N-3-(3,5-di-t-butyl-5-hydroxybenzene)propyl succinimide of a copolymer and maleic anhydride graft.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: April 24, 1990
    Assignee: Texaco Inc.
    Inventors: Theodore E. Nalesnik, Sheldon Herbstman
  • Patent number: 4919685
    Abstract: A stable middle distillate fuel-oil composition which comprises(a) a major portion of a middle distillate fuel-oil; and(b) a minor amount, as a storage stabilizing additive, of an aliphatic N(N',N'-dimethyl aminopropyl) succinimide of a copolymer and maleic anhydride graft.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: April 24, 1990
    Assignee: Texaco Inc.
    Inventors: Sheldon Herbstman, Theodore E. Nalesnik
  • Patent number: 4919830
    Abstract: Dihydrocarbyl dithiocarbamate-derived organic phosphates have been found to be effective antioxidant/antiwear multifunctional additives for various lubricant media.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: April 24, 1990
    Assignee: Mobil Oil Corporation
    Inventors: Liehpao O. Farng, Andrew G. Horodysky
  • Patent number: 4919683
    Abstract: A stable middle distillate fuel-oil composition which comprises(a) a major portion of a middle distillate fuel-oil; and(b) a minor amount, as a storage stabilizing additive, of N(4-anilinophenyl)succinimide of a copolymer and maleic anhydride graft.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: April 24, 1990
    Assignee: Texaco Inc.
    Inventors: Theodore E. Nalesnik, Sheldon Herbstman
  • Patent number: 4912272
    Abstract: Novel lubricant mixtures are disclosed having unexpectedly high viscosity indices. The mixtures are blends of high viscosity index polyalphaolefins prepared with activated chromium on silica catalyst and polyalphaolefins prepared with BF3, aluminum chloride, or Ziegler-type catayst. Superior blends are also prepared from HVIXPAO with mineral oil and/or other synthetic liquid lubricants.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: March 27, 1990
    Assignee: Mobil Oil Corporation
    Inventor: Margaret M. Wu