Patents Represented by Attorney Charles A. Huggett

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  • Octane and total yield improvement in catalytic cracking
    Patent number: 4368114
    Abstract: Octane and total yield improvement in catalytic cracking processes can be attained by the addition to conventional cracking catalysts of very small amounts of additive catalyst comprising a class of zeolites characterized by a silica to alumina mole ratio greater than about 12 and a constraint index of about 1 to 12. The additive catalyst is added to the conventional cracking catalyst in the cracking process in an amount which provides the zeolite component of the additive catalyst at from about 0.01 weight percent to about 1.0 weight percent of the conventional cracking catalyst in the cracking process.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: January 11, 1983
    Assignee: Mobil Oil Corporation
    Inventors: Arthur W. Chester, William E. Cormier, Jr., William A. Stover
  • Process for suspension polymerization of styrenic monomers
    Patent number: 4367320
    Abstract: There is provided a method for the suspension polymerization of one or more styrenic monomers. This method involves increasing the amount of substantially water insoluble free radical initiator in the suspension after the conversion of the monomer has reached at least 50%. The temperature of the suspension is at least 110.degree. C. throughout the entire polymerization.
    Type: Grant
    Filed: March 27, 1981
    Date of Patent: January 4, 1983
    Assignee: Mobil Oil Corporation
    Inventor: James G. Murray
  • Subsea flowline connection yoke assembly and installation method
    Patent number: 4367055
    Abstract: A marine compliant riser system is provided for attaching a flexible flowline to a buoyed conduit riser section. The improved system includes a novel yoke assembly for receiving flexible flowline with a means for retaining a terminal portion of the flexible flowline at a substantially vertical catenary departure angle. Pivotally-mounted loading gates or a yoke beam support the flexible flowlines during installation and/or replacement on the yoke. Connection means are mounted on the buoy section for establishing fluid communication between the flexible flowline and conduit at the buoyed riser section.An installation method is disclosed for completing the improved riser system in deepwater. This system is particularly adapted for oil and gas flowlines, service lines, hydraulic control and electrical conduits for connecting a subsea wellhead or production gathering eqiupment to a surface facility.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: January 4, 1983
    Assignee: Mobil Oil Corporation
    Inventors: Larry L. Gentry, Herbert H. Moss, Narayan N. Panicker, Irvin R. Yancey
  • Heat-sealable laminar thermoplastic films
    Patent number: 4367112
    Abstract: A biaxially oriented polypropylene film is provided which exhibits improved heat-seal strength and good optical clarity. The polypropylene film is characterized by having on at least one surface thereof a continuous coating of a heat-sealable film layer comprising a copolymer of ethylene and methylacrylate. The lamination may be formed by machine direction orientation of an uncoated polypropylene base web followed by extrusion coating with the copolymer material and subsequent transverse direction orientation of the combined layers.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: January 4, 1983
    Assignee: Mobil Oil Corporation
    Inventor: Hee C. Park
  • Para-selective zeolite catalysts treated with carbon dioxide
    Patent number: 4367359
    Abstract: A process is provided for modifying ZSM-5 type zeolite catalysts with carbon dioxide treating agent in order to enhance the para-selective properties of such catalysts for the conversion of aromatic materials to dialkyl-substituted benzene compounds. Catalyst compositions so treated can be used in alkylation, transalkylation or disproportionation processes to provide product mixtures having exceptionally high concentrations of the para-dialkylbenzene isomer.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: January 4, 1983
    Assignee: Mobil Oil Corporation
    Inventor: Warren W. Kaeding
  • Acrylic modified anionic water dispersible polystyrene
    Patent number: 4366293
    Abstract: This invention provides a graft copolymer of at least one acrylic monomer and polystyrene, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both. It also provides anionic aqueous dispersions of such graft copolymers and coating compositions containing them.
    Type: Grant
    Filed: June 17, 1981
    Date of Patent: December 28, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Michael A. Tobias
  • Tubular drill string member with contoured circumferential surface
    Patent number: 4365678
    Abstract: A tubular member for a drill string used in the rotary drilling of deviated boreholes, which includes an outer circumferential surface which is contoured and adapted to engage the wall of the borehole so as to produce a longitudinally downward force on the drill bit upon rotation of the drill string. The tubular member may be a drill collar or section of drill pipe, wherein the contoured surface is constituted of a helical thread of a pitch which will impart a longitudinal force towards the drill bit upon rotation of the tubular member.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: December 28, 1982
    Assignee: Mobil Oil Corporation
    Inventor: John L. Fitch
  • Preparation of alkyl carboxylates
    Patent number: 4365083
    Abstract: A method for preparation of alkyl carboxylate compounds, and especially methylalkyl carboxylate compounds, by reaction of an olefin and a carboxylic acid compound in the presence of a mordenite catalyst.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: December 21, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Lewis B. Young
  • Preparation of alkyl carboxylates
    Patent number: 4365084
    Abstract: A method for preparation of alkyl carboxylate compounds, and especially .alpha.-methylalkyl carboxylate compounds, by reaction of an olefin and a carboxylic acid compound in the presence of a particular type of zeolite catalyst. The zeolites are characterized by a silica to alumina mole ratio of at least 12 and a constraint index of 1 to 12. Zeolites ZSM-5 and ZSM-12 are particularly preferred.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: December 21, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Lewis B. Young
  • Separation of thiosulfate from Stretford solution
    Patent number: 4364918
    Abstract: A thiosulfate-containing purge stream generated in a Stretford-type process for purifying a hydrogen sulfide contaminated gas stream is treated with a nickel ethylenediamine complex to remove thiosulfate as a nickel ethylenediamine thiosulfate precipitate. The precipitate is treated with acid to decompose the thiosulfate and then with lime to recover the nickel ethylenediamine complex for reuse.
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: December 21, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Wilton F. Espenscheid
  • Conversion of heavy hydrocarbon oils
    Patent number: 4363717
    Abstract: This invention provides a process for upgrading a heavy hydrocarbon oil to motor fuel products.The heavy hydrocarbon oil is admixed with a metal halide catalyst and a solvent component under supercritical conditions to form (1) a dense-gas solvent phase which contains refined hydrocarbon crackate, and which is substantially free of metal halide catalyst content; and (2) a residual asphaltic phase.
    Type: Grant
    Filed: January 15, 1981
    Date of Patent: December 14, 1982
    Assignee: Mobil Oil Corporation
    Inventors: Bruce P. Pelrine, Nai Y. Chen, Tsoung Y. Yan
  • Process for preparing non-oriented polyolefin film
    Patent number: 4363771
    Abstract: A method for producing non-oriented film that comprises depositing high molecular weight polyolefin powder on a smooth non-adherent substrate, sintering the deposited powder, contacting the sintered powder with rollers at the sintering temperature at a pressure sufficient to effect densification of the polyolefin normal to the surface but insufficient to effect significant longitudinal flow of the polyolefin to form a void-free film, and stripping said film from said substrate.
    Type: Grant
    Filed: June 24, 1981
    Date of Patent: December 14, 1982
    Assignee: Mobil Oil Corporation
    Inventor: James G. Murray
  • Poly(p-methylstyrene) with broad molecular weight distribution and process for preparation
    Patent number: 4362854
    Abstract: Poly(p-methylstyrene) with a broad molecular weight distribution and having a melt index suitable for injection molding is prepared by polymerizing p-methylstyrene monomer with a low temperature initiator and a high temperature initiator added with all the monomer at the start of the reaction.
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: December 7, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Aristotle G. Prapas
  • Method and arrangement for improving cuttings removal and reducing differential pressure sticking of drill strings in wellbores
    Patent number: 4361193
    Abstract: A rotary method and arrangement mitigate differential sticking of a drill string during the drilling of a wellbore and for improving cuttings removal. Tool joints are used for interconnecting joints of drill pipe together into a drill string for use in drilling the wellbore. Nozzles are provided in the tool joints or drill pipe to cause a flow of drilling fluid into the wellbore from the interior of the drill string during the drilling operation to improve removal of the cuttings from the wellbore and mitigate differential sticking of the drill string.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: November 30, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Wilton Gravley
  • Catalyst for converting synthesis gas to high octane predominantly olefinic naphtha
    Patent number: 4361503
    Abstract: An improved catalyst composition is disclosed for converting synthesis gas to hydrocarbon mixtures. The catalyst comprises an iron-containing, Fischer-Tropsch catalyst and a crystalline zeolite having a silica-to-alumina ratio of greater than 200 (including zeolites containing essentially no alumina) and an (R.sub.2 O+M.sub.2 /.sub.n O):SiO.sub.2 rate of less than 1.1:1 where M is a metal other than a metal of Group IIIA, n is the valence of said metal, and R is an alkyl ammonium radical, said organosilicate being characterized by a specified x-ray diffraction pattern.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: November 30, 1982
    Assignee: Mobil Oil Corporation
    Inventors: Francis G. Dwyer, William E. Garwood
  • Floating remolding shoes for foam thermoforming molds
    Patent number: 4360491
    Abstract: A shape-preserving device which is attached to the top and bottom mold section of a thermoforming machine which reciprocatingly thermoforms articles from a heat-softened plastic sheet. The device includes a cavity mold attached to one mold section and a remolding shoe assembly attached to the other. The remolding shoe assembly includes a floating remolding shoe attached to the outer end of a piston rod connected to a pressurized fluid-actuated pneumatic cylinder which is in unimpeded flow communication with a source of compressed air.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: November 23, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Morell J. Holden, Jr.
  • Flexible film laminate especially adapted for use in the construction of a retortable food pouch
    Patent number: 4360551
    Abstract: A flexible film laminate especially adapted for use in the manufacture of a retortable pouch for the packaging of food is disclosed which comprises:(a) a first layer of heat-sealable polyolefin;(b) a second layer of previously metallized thermoplastic polymer bonded to said first layer; and,(c) an adhesive bonding the first layer to the metallized surface of the second layer, said adhesive being a maleic acid anhydride adduct of ethylene-propylene copolymer.
    Type: Grant
    Filed: June 19, 1981
    Date of Patent: November 23, 1982
    Assignee: Mobil Oil Corporation
    Inventors: John P. Guarino, Frederick C. Schwab
  • Acrylic modified anionic water dispersible styrene (meth)acrylonitrile copolymers
    Patent number: 4360642
    Abstract: This invention provides a graft copolymer of at least one acrylic monomer and a random copolymer of a styrene and (meth)acrylonitrile, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both. It also provides anionic aqueous dispersions of such graft copolymers and coating compositions containing them.
    Type: Grant
    Filed: June 18, 1981
    Date of Patent: November 23, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Michael A. Tobias
  • Acrylic modified anionic water dispersible styrene hydroxyethyl (meth)acrylate copolymers
    Patent number: 4360641
    Abstract: This invention provides a graft copolymer of at least one acrylic monomer and a random copolymer of a styrene and hydroxyethyl (meth)acrylate, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both. It also provides anionic aqueous dispersions of such graft copolymers and coating compositions containing them.
    Type: Grant
    Filed: June 17, 1981
    Date of Patent: November 23, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Michael A. Tobias
  • Acrylic modified anionic water dispersible styrene allyl alcohol copolymers
    Patent number: 4360640
    Abstract: This invention provides a graft copolymer of at least one acrylic monomer and a random copolymer of a styrene and allyl alcohol, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both. It also provides anionic aqueous dispersions of such graft copolymers and coating compositions containing them.
    Type: Grant
    Filed: June 17, 1981
    Date of Patent: November 23, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Michael A. Tobias