Patents Represented by Attorney Dean A. Sandford
  • Patent number: 4686056
    Abstract: Boron and/or metal-boron derivatives having extreme pressure anti-wear and friction reducing properties and lubricating compositions containing the same are disclosed. The lubricating compositions comprise a major amount of a lubricating oil and a minor amount of an extreme pressure, anti-wear and friction reducing additive comprising a boramid or metal containing boramid compound.
    Type: Grant
    Filed: April 7, 1983
    Date of Patent: August 11, 1987
    Assignee: Union Oil Company of California
    Inventors: Peter Jessup, Richard A. Holstedt, Kenneth Baron
  • Patent number: 4686017
    Abstract: An electrolytic bath, suitable for depositing a metal on or removing a metal from a substrate is provided which comprises an anode and cathode, an acid having a pK.sub.a of about 6 or less, and a chalcogen-containing compound soluble in said bath and having the empirical formula ##STR1## wherein X is a chalcogen, each of R.sub.1 and R.sub.2 is selected from hydrogen, NR.sub.3 R.sub.4 and NR.sub.5, at least one of R.sub.1 and R.sub.2 is other than hydrogen, each of R.sub.3 and R.sub.4 is hydrogen or a monovalent organic radical, and R.sub.5 is a divalent organic radical, in which the molar ratio of the chalcogen compound to the acid is about 1 or more, and the molar ratio of water to the combination of acid and chalcogen compound is about 10 or less.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: August 11, 1987
    Assignee: Union Oil Co. of California
    Inventor: Donald C. Young
  • Patent number: 4686204
    Abstract: A sulfur sorbent for use in reducing the emissions of sulfur oxides from regenerators of cyclic catalytic cracking units comprises a rare earth component or mixture of rare earth components in combination with a porous, inorganic refractory oxide component. The rare earth components used as a portion of the sorbent are preferably derived from the mineral bastnaesite by treating the bastnaesite to remove at least 50 weight percent of its fluorine, calculated as the element. The activity of the sulfur sorbent for removing sulfur oxides during catalytic cracking processes is increased to unexpectedly high levels by including in the composition cobalt or other transition metal component comprising an element selected from Group IB, Group IIB Group IVA, Group VA, Group VIA, Group VIIA, and Group VIII of the Periodic Table of Elements.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: August 11, 1987
    Assignee: Union Oil Company of California
    Inventors: Zoltan C. Mester, Edward J. Aitken
  • Patent number: 4683050
    Abstract: Mild hydrocracking is accomplished with a catalyst containing an intermediate pore molecular sieve, such as silicalite or a ZSM-5 type zeolite.
    Type: Grant
    Filed: August 22, 1985
    Date of Patent: July 28, 1987
    Assignee: Union Oil Company of California
    Inventor: John W. Ward
  • Patent number: 4682999
    Abstract: The productivity of plants is enhanced by enhancing one or more physiological responses of photosynthesizing plants by contacting the foliage of such plants during the early stages, i.e. about the first half, of the grand response period for the selected physiological response with a solution containing biuret in an amount and under conditions sufficient to introduce into the plant a non-phytotoxic amount of biuret sufficient to enhance the selected physiological response.
    Type: Grant
    Filed: December 11, 1985
    Date of Patent: July 28, 1987
    Assignee: Union Oil Company of California
    Inventor: Donald C. Young
  • Patent number: 4676695
    Abstract: A method for installing a pipeline for transporting a warm fluid, such as newly-produced oil, across arctic seafloor underlain by a permafrost zone without danger of rupture of the pipeline caused by thawing in the supporting permafrost zone comprises (1) drilling a series of boreholes along the seafloor through a thawed zone of subsea soil so as to penetrate a distance into a zone of permafrost lying thereunder, (2) circulating a warm fluid through each borehole so as to cause a zone of prethawing in the permafrost zone and thereby create a slump trough on the surface of the seafloor along a path marked by the series of boreholes; and (3) installing a warm fluid bearing pipeline along the bottom of the slump trough. Usually a temperature differential between the warm fluid and the bottom of the borehole of at least 2 degrees Fahrenheit is required to assure economical prethawing of the permafrost zone.
    Type: Grant
    Filed: November 1, 1985
    Date of Patent: June 30, 1987
    Assignee: Union Oil Company of California
    Inventor: Frederick C. Duthweiler
  • Patent number: 4674572
    Abstract: Corrosion and erosion of metal well casings due to production of corrosive well fluids, especially geothermal brines, is avoided by producing corrosive fluids through an impermeable cement wellhousing comprised of inner and outer substantially continuous cement liners which envelop and insulate from corrosion and erosion a conventional outer metal or other well casing while the outer casing internally reinforces the cement well housing. A second, sacrificial metal casing of smaller diameter is used in cementing the inner cement liner and can be substantially corroded away by corrosive fluids without substantial damage to the remaining cement wellhousing or outer casing through which corrosive fluids are produced. An apparatus for producing corrosive fluids, particularly geothermal brine, contained in a subterranean formation is also disclosed.
    Type: Grant
    Filed: January 9, 1986
    Date of Patent: June 23, 1987
    Assignee: Union Oil Company of California
    Inventor: Julius P. Gallus
  • Patent number: 4675169
    Abstract: A process for removing SO.sub.x pollutants from a stack gas by (1) absorbing the SO.sub.x pollutants into an aqueous absorbent containing a formate compound and (2) regenerating the spent absorbent containing dissolved SO.sub.x compounds by contact, in the presence of added formate anion, with a water-insoluble, solid substance containing one or more tertiary amine functional groups. Nitrogen monoxide is removed by providing in the aqueous absorbent an iron(II) chelate, such as a chelate of ferrous ion with ethylenediaminetetraacetic acid. Regeneration of the spent absorbent containing absorbed NO is accomplished under the same conditions as for spent absorbents containing absorbed SO.sub.x compounds. SO.sub.x and NO pollutants dissolved in the absorbent are, during regeneration, converted to hydrogen sulfide and nitrogen, respectively.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: June 23, 1987
    Assignee: Union Oil Company of California
    Inventor: Robert H. Hass
  • Patent number: 4673522
    Abstract: Acid-soluble and/or hydrolyzable obstructions are removed from conduits by contacting such obstructions with a composition containing urea and sulfuric acid in which the urea/sulfuric acid molar ratio is less than 2. The urea/sulfuric acid compositions may optionally contain other components such as surfactants and/or non-aqueous polar solvents which accentuate the activity of the compositions toward hydrophobic materials. Urea-sulfuric acid compositions which contain water and which have H.sub.2 O/(urea+H.sub.2 SO.sub.4) molar ratios below about 2.5 are particularly useful for removing obstructions by partial or complete hydrolysis.
    Type: Grant
    Filed: November 28, 1984
    Date of Patent: June 16, 1987
    Assignee: Union Oil Company of California
    Inventor: Donald C. Young
  • Patent number: 4672048
    Abstract: Hydrocracking catalysts comprise a Group VIB and/or non-noble metal Group VIII hydrogenation component in conjunction with an LZ-210 zeolite preferably of SiO.sub.2 :Al.sub.2 O.sub.3 greater than 9.0, which zeolite has been hydrothermally treated and ammonium ion-exchanged. In a preferred embodiment, the zeolite is essentially free of rare earth metals, and most preferably, essentially free of all metals except the Group VIB or non-noble Group VIII.
    Type: Grant
    Filed: October 31, 1985
    Date of Patent: June 9, 1987
    Assignee: Union Oil Company of California
    Inventor: John W. Ward
  • Patent number: 4664776
    Abstract: A hydrocarbon conversion catalyst useful for hydrocracking hydrocarbons to more valuable products comprises one or more hydrogenation components supported on a base containing (1) a crystalline aluminosilicate zeolite having activity for cracking hydrocarbons and (2) a dispersion of silica-alumina in an alumina matrix.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: May 12, 1987
    Assignee: Union Oil Company of California
    Inventor: John W. Ward
  • Patent number: 4664717
    Abstract: Polysaccharides are at least partially hydrolyzed by contact with a composition containing urea, sulfuric acid, and water in which the urea/sulfuric acid molar ratio is less than 2. Such proportions of urea and sulfuric acid assure the presence of the monourea adduct of sulfuric acid. The polysaccharide can be hydrolyzed to an extent sufficient only to hydrate the polysaccharide to produce a hydrated polysaccharide such as hydrated cellulose, or it can be completely hydrolyzed to its constituent monosaccharides. Thus, cellulose can be converted to glucose.
    Type: Grant
    Filed: November 20, 1984
    Date of Patent: May 12, 1987
    Assignee: Union Oil Company of California
    Inventor: Donald C. Young
  • Patent number: 4664809
    Abstract: A method for pollution abatement in groundwaters comprises drilling a series of wells in the path of an advancing front of contaminants in an aquifer, and using the wells to introduce into the aquifer an adsorbent for the particular contaminants present.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: May 12, 1987
    Assignee: Union Oil Company of California
    Inventors: Donald M. Fenton, LeRoy W. Holm, Dennis L. Saunders
  • Patent number: 4663004
    Abstract: A method for electrochemical converting reactants to products includes cycling alternating electrical current to an electrode containing a non-degenerate semiconductor material in an electrochemical cell. Suitably doped (n-type or p-type) semiconductors rectify the alternating current.
    Type: Grant
    Filed: April 29, 1986
    Date of Patent: May 5, 1987
    Assignee: Union Oil Company of California
    Inventor: Jay A. Switzer
  • Patent number: 4657686
    Abstract: A boron-containing heterocyclic compound prepared by reacting a primary amine or ammonia with an alkylene oxide or epoxide and then reacting concurrently or subsequently this reaction intermediate with a boric acid. This boron-containing heterocyclic compound may further be reacted with a metal, metaloid or other metal compound and even further contain sulfur, such as a sulfide group.The boron-containing heterocyclic compound provides extreme pressure anti-wear properties when provided in a lubricating composition. The lubricating composition may also comprise anti-oxidants, copper corrosion inhibitors, and lead corrosion inhibitors. The anti-wear properties of a lubricating composition can be enhanced using the borates of the present invention in conjunction with a copper compound.
    Type: Grant
    Filed: January 29, 1985
    Date of Patent: April 14, 1987
    Assignee: Union Oil Company of California
    Inventors: Richard A. Holstedt, Peter J. Jessup
  • Patent number: 4658059
    Abstract: Methods are provided for removing biuret from biuret-containing aqueous urea solutions which methods involve contacting a quantity of a biuret-containing aqueous urea feed solution with the hydroxide ion form of an anion exchanger under conditions sufficient to remove at least a portion of the biuret from the feed solution, and regenerating the resulting biuret-containing anion exchanger, at least in part, by contact with a substantially non-alkaline aqueous regenerant under conditions sufficient to remove at least a portion of the biuret from the anion exchanger. After completion of the described contacting with the substantially non-alkaline aqueous regenerant, the anion exchanger can optionally be further regenerated by contact with an aqueous solution of a strong base to remove additional quantities of biuret and/or other anion exchanger contaminants such as alkaline earth metal and carbonate ions and/or compounds.
    Type: Grant
    Filed: December 30, 1983
    Date of Patent: April 14, 1987
    Assignee: Union Oil Company of California
    Inventors: Donald C. Young, James A. Green, II
  • Patent number: 4655949
    Abstract: This invention provides novel lubricating oil compositions comprising an organometallic additive, including a metal selected from Groups I, Ib, and VIII of the Periodic System of Elements, e.g. Na, K, Cu, Co, Ni or Fe, chelated with the reaction product of formaldehyde, an amino acid and a phenol, dissolved in a lubricating oil. Depending on the choice of the metal, the above organometallic additive imparts rust inhibition, sludge dispersant, wear reduction and anti-oxidant properties to said lubricating oil compositions.
    Type: Grant
    Filed: April 24, 1985
    Date of Patent: April 7, 1987
    Assignee: Union Oil Company of California
    Inventors: James F. Landry, Michael C. Croudace, Harry P. On, Jr., Sidney Y. Shen
  • Patent number: 4654442
    Abstract: Biuret is removed from biuret-containing aqueous urea solutions in a multi-cycle process which involves sequential (A) removal of biuret by contact with an anion exchanger and (B) regeneration of the anion exchanger, in which method, in one or more cycles, the anion exchanger regenerant comprises an aqueous solution of a strong base which has been employed to regenerate the anion exchanger in a previous cycle. This procedure allows for recycling, and thus reuse, of the strong base regenerant which results in significant economy.
    Type: Grant
    Filed: December 30, 1983
    Date of Patent: March 31, 1987
    Assignee: Union Oil Company of California
    Inventors: Donald C. Young, James A. Green, II
  • Patent number: 4654061
    Abstract: A device for separating liquid droplets and solids out of a geothermally produced vapor stream traveling under pressure through a pipeline comprising a first means for inducing a force in the vapor stream to induce the droplets and solids to migrate to the pipelines inner wall and a second downstream means for collecting those droplets and solids.
    Type: Grant
    Filed: May 31, 1985
    Date of Patent: March 31, 1987
    Assignee: Union Oil Company of California
    Inventor: Douglas B. Jung
  • Patent number: 4652603
    Abstract: An adhesive composition, particularly useful for laminating carboxylate-containing films, comprises an aqueous dispersion of a film-forming vinylidene chloride copolymer wherein the vinylidene chloride copolymer includes on a comonomer weight basis:(a) from about 45 to about 90 percent vinylidene chloride,(b) from about 5 to about 25 percent of a polar comonomer having one or more hydroxyl groups, and(c) from about 0 to about 30 percent of a plasticizing monomer for vinylidene chloridein combination with:(d) a cross-linking agent for hydroxyl groups selected from the group consisting of dialdehydes having between two and ten carbon atoms and compounds containing methylol groups dissolved in the continuous aqueous phase of the vinylidene chloride copolymer.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: March 24, 1987
    Assignee: Union Oil Company of California
    Inventor: John Biale