Patents Represented by Attorney John W. Ditsler
  • Patent number: 4868233
    Abstract: The present invention relates to an improved polyethylene modified asphaltic composition and a method for its manufacture. More specifically, when certain linear polyethylene compounds are added to an asphalt that is low in asphaltenes but relatively high in saturates, there results a composition which has excellent storage stability, phase compatibility and creep resistance relative to unmodified asphalts. The improved asphaltic composition is particularly well suited for use as a binder in paving materials and as a coating or saturant for roofing products.
    Type: Grant
    Filed: July 15, 1987
    Date of Patent: September 19, 1989
    Assignee: Exxon Research and Engineering Company
    Inventor: Lyle E. Moran
  • Patent number: 4826506
    Abstract: Certain polyhydric alcohols have been found to be effective in reducing the loss of certain amine oxides from liquid hydrocarbon fuels such as gasoline.
    Type: Grant
    Filed: December 9, 1987
    Date of Patent: May 2, 1989
    Assignee: Exxon Research and Engineering Company
    Inventors: Joseph Vardi, Abraham A. Zimmerman
  • Patent number: 4826612
    Abstract: The use of oxidants such as hydroperoxides in a lubricating oil have been found to be effective in reducing the war of one or more metal and/or ceramic surfaces in contact with an advanced ceramic surface. The reduced wear may be obtained in the absence of conventional antiwear additives such as zinc dialkyldithiophosphate.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: May 2, 1989
    Assignee: Exxon Research and Engineering Company
    Inventors: Jacob J. Habeeb, Alan G. Blahey, William N. Rogers
  • Patent number: 4824815
    Abstract: This invention relates to a catalyst suitable for use in a fluid catalytic process and a method of using the catalyst on hydrocarbons containing one or more poison metal of vanadium or nickel to convert the hydrocarbons to lower boiling fractions. The catalyst contains a particulate and substantially water-insoluble strontium compound (in addition to a conventional zeolite and catalyst matrix) which reacts with and traps the metal poison to preserve the structure of the zeolite and, in addition, lowers the coke make and hydrogen production.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: April 25, 1989
    Assignee: Exxon Research and Engineering Company
    Inventor: Edwin L. Kugler
  • Patent number: 4822503
    Abstract: A method for manufacturing a lubricating grease having improved properties is described. The method comprises reacting a pyrrolidone with a fatty amine and subsequently adding a metal hydroxide to the reaction when the unreacted fatty amine content ranges between about 33 and about 66 wt. % of the fatty amine originally added. The grease thus formed will be a NLGI #0 grade grease that has the high temperature stay-in-place properties of a NGLI #2 grade grease.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: April 18, 1989
    Assignee: Exxon Research and Engineering Company
    Inventors: James H. Norton, William Nywening, Phillip W. Brewster, A. Gordon Alexander
  • Patent number: 4822505
    Abstract: A grease composition having improved load-carrying capability is disclosed. More specifically, the load-carrying capability of a grease is increased when a polyhydric alcohol having at least three hydroxy groups and at least two metal hydrocarbylthiophosphate compounds in which the metal is different in at least two compounds are incorporated into said grease. Glycerol is a preferred polyhydric alcohol while antimony dialkyldithiosphosphate and zinc dialkyldithiophosphate are preferred hydrocarbylthiophosphate compounds.
    Type: Grant
    Filed: July 31, 1987
    Date of Patent: April 18, 1989
    Assignee: Exxon Research and Engineering Company
    Inventor: A. Gordon Alexander
  • Patent number: 4801373
    Abstract: An improved method for producing a hydrotreated oil from a naphthenic feed is described. The process comprises passing the naphthenic feed through the multistage hydrotreating process with intermediate removal of hydrogen sulfide and/or ammonia.
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: January 31, 1989
    Assignee: Exxon Research and Engineering Company
    Inventors: Blaine G. Corman, Paul F. Korbach, Kenneth M. Webber
  • Patent number: 4801391
    Abstract: A lube oil and method of making same having improved anti-wear properties is described. The lube oil comprises:A. a basestock;B. a diphenyl carbonate; andC. a metal dialkyldithiophosphate salt.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: January 31, 1989
    Assignee: Exxon Research and Engineering Company
    Inventors: Irwin L. Goldblatt, Harold Shaub
  • Patent number: 4787916
    Abstract: It has been found that when minor amounts of quaternary ammonium hydroxides are added to gasolines, the octane requirement increase for fuel fired spark ignition internal combustion engines is decreased or reversed.Thus, in one aspect, the present invention comprises a method for controlling the ORI of spark ignition internal combustion engines by operating such engines on a fuel containing certain quaternary ammonium hydroxides in amounts sufficient to control the ORI.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: November 29, 1988
    Assignee: Exxon Research and Engineering Company
    Inventor: Nicholas Feldman
  • Patent number: 4777307
    Abstract: The oxidation stability of a refined hydrocarbon oil can be sigificantly improved by adding at least one cyclic sulfide and at least one aromatic compound to said oil.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: October 11, 1988
    Assignee: Exxon Research and Engineering Company
    Inventors: Sandra J. Alward, Michael A. Fefer
  • Patent number: 4764294
    Abstract: A lube oil composition having improved antiwear and friction reducing properties, together with a method for manufacturing same, are described. The lube oil comprises:A. a basestock;B. a metal phosphate;C. a metal carbamate; andD. a para alkyl hydroxy-aryl sulfide.
    Type: Grant
    Filed: June 26, 1987
    Date of Patent: August 16, 1988
    Assignee: Exxon Research and Engineering Company
    Inventors: Jacob J. Habeeb, William H. Stover
  • Patent number: 4755189
    Abstract: A wax-containing petroleum distillate fuel composition having improved low temperature flow properties is described. The distillate fuel has added thereto:A. an amorphous, normally solid, essentially saturated hydrocarbon fraction substantially free of normal paraffin hydrocarbons;B. a wax modifying random copolymer of ethylene and an unsaturated ester; andC. an ether.
    Type: Grant
    Filed: December 12, 1984
    Date of Patent: July 5, 1988
    Assignee: Exxon Research and Engineering Company
    Inventor: Nicholas Feldman
  • Patent number: 4749502
    Abstract: The present invention is directed at a grease composition comprising:A. an oil component having a major amount of a synthetic fluid having a viscosity of at least 50 cSt at 40.degree. C. and a minor amount of a mineral oil having a pour point below -20.degree. C.; andB. a thickener.The oil component of the grease composition preferably comprises between about 30 and 90 wt. % synthetic oil, more preferably between about 40 and about 80 wt. % synthetic oil and from 70 to 10 wt. % and preferably 60 to 20 wt. % mineral oil. The viscosity of the synthetic oil preferably is at least 50 cSt, more preferably at least 100 cSt at 40.degree. C. The synthetic oil preferably is selected from polyolefins, esters, polyesters, high VI isoparaffins, and mixtures thereof, with polyalphaolefins being particularly preferred. The polyalphaolefins preferably comprise C.sub.8 and C.sub.12 monoalphaolefin building blocks.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: June 7, 1988
    Assignee: Exxon Research and Engineering Company
    Inventors: A. Gordon Alexander, Donald W. Murray
  • Patent number: 4723963
    Abstract: A middle distillate hydrocarbon fuel boiling in the range of about 160.degree. C. to about 400.degree. C. having an improved cetane number is disclosed. The fuel comprises at least about 3 weight percent oxygenated compounds preferably at least about 3 weight percent oxygenated aromatic compounds. The oxygenated compounds preferably comprise alkylaromatics and/or hydroaromatics, preferably oxygenated at the benzylic carbon position.
    Type: Grant
    Filed: July 21, 1986
    Date of Patent: February 9, 1988
    Assignee: Exxon Research and Engineering Company
    Inventor: William F. Taylor
  • Patent number: 4711672
    Abstract: An asphaltic composition having improved temperature susceptibility and a method of manufacturing the improved asphaltic composition are disclosed. The improvement is directed at the addition of a stabilizing agent selected from the group consisting of Group IA sulfates, Group IIB sulfates and mixtures thereof.
    Type: Grant
    Filed: April 21, 1986
    Date of Patent: December 8, 1987
    Assignee: Exxon Research and Engineering Company
    Inventors: Helen R. Gorter, Lyle E. Moran, Warren D. Robertson, Shaunalea Savard
  • Patent number: 4707284
    Abstract: A lube oil and method of making same having improved anti-wear properties is described. The lube oil comprises:A. a basestock;B. a diphenyl carbonate; andC. a metal dialkyldithiophosphate salt.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: November 17, 1987
    Assignee: Exxon Research and Engineering Company
    Inventors: Irwin L. Goldblatt, Harold Shaub
  • Patent number: 4705641
    Abstract: The combination of copper and molybdenum salts is shown to be an effective antioxidant and anti-wear additive for hydrocarbons, such as lube oils. Accordingly the present invention is directed to a lube oil having improved oxidation stability, providing improved wear protection with reduced friction and comprising:A. a basestock, andB. an effective amount of a copper salt and a molybdenum salt.
    Type: Grant
    Filed: September 15, 1986
    Date of Patent: November 10, 1987
    Assignee: Exxon Research and Engineering Company
    Inventors: Irwin L. Goldblatt, Leah T. Mendelson
  • Patent number: 4565793
    Abstract: A fluidized bed process is disclosed which comprises subjecting a bed comprised of solid particulate magnetizable, fluidizable material within an external force field wherein at least a portion of the bed containing said solid particulate magnetizable and fluidizable material and fluidizing fluid are subjected to a nontime varying and substantially uniform applied magnetic field having a substantial component along the direction of the external force field such that said solid particulate magnetizable and fluidizable material has a component of magnetization along the direction of the external force field and wherein at least a portion of said bed containing the solid particulate magnetizable and fluidizable material is fluidized by a flow of fluid opposing said external force field at a superficial fluid velocity ranging between:(a) more than the normal minimum fluidization superficial fluid velocity required to fluidize said bed in the absence of said applied magnetic field; and,(b) less than the superficia
    Type: Grant
    Filed: October 28, 1982
    Date of Patent: January 21, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventor: Ronald E. Rosensweig
  • Patent number: 4546552
    Abstract: Solids comprising a magnetically stabilized fluidized bed are transported in a direction transverse to the flow of the fluidizing fluid exiting the bed by contacting at least a portion of said solids with fluidizing fluid which enters the bed with a velocity component in the direction of solids flow; i.e. the transverse flow direction. In a preferred embodiment, the fluidizing fluid entering the bed is passed through a distribution means containing propulsion passages slanted in the desired direction of solids flow which serve to orient the fluidizing fluid in the transverse flow direction. Use of this invention eliminates the need for the costly and inconvenient pneumatic, hydraulic and mechanical transport devices employed in the prior art. Solids attrition and elutriation are also reduced.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: October 15, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: Robert P. Cahn, Jeffrey H. Siegell
  • Patent number: 4543733
    Abstract: In a magnetically stabilized fluidized bed in which the bed particles continuously move transverse to the flow of the fluidizing fluid, the bed particles have increased fluidity when the bed is operated at or substantially near the locus of transition between the bubbling and stabilized regimes of said bed. More specifically, the particulate bed comprising a transverse flow magnetically stabilized fluidized bed process has greater fluidity when the bed is operated such that the ratio of the difference between the transition velocity and the operating velocity to the difference between the transition velocity and the normal minimum fluidization velocity ranges between -0.1 and +0.5. The increased fluidity facilitates the movement of solids within a vessel as well as the transfer of solids to other vessels.
    Type: Grant
    Filed: February 2, 1982
    Date of Patent: October 1, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: Jeffrey H. Siegell, Costas A. Coulaloglou