Patents by Inventor Kathleen M. Keville

Kathleen M. Keville has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5294330
    Abstract: There is provided a hydrocracking process with a catalyst comprising MCM-36.
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: March 15, 1994
    Assignee: Mobil Oil Corp.
    Inventors: Thomas F. Degnan, Kathleen M. Keville, Charles T. Kresge, David O. Marler, Brenda H. Rose, Wieslaw J. Roth, Hye Kyung C. Timken
  • Patent number: 5290744
    Abstract: A hydrocracking catalyst with improved distillate selectivity comprises, in addition to a metal component, a mesoporous crystalline material together with a molecular sieve component of relatively smaller pore size. The metal component of the catalyst is preferably associated with the high-surface area mesoporous component and high-metal loadings can be achieved in order to give good hydrogenation activity to the catalyst. The relatively smaller pore size component is preferably a large pore size zeolite such as zeolite Y or an intermediate pore size zeolite such as ZSM-5; this component provides a higher level of acidic functionality than the mesoporous component, achieving a functional separation in the hydrocracking process, permitting the metals loading and acidic activities to be optimized for good catalyst selectivity and activity. The catalysts enable the distillate selectivities comparable to amorphous catalyst to be achieved with improved conversion activity.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: March 1, 1994
    Assignee: Mobil Oil Corporation
    Inventors: Thomas F. Degnan Jr., Kathleen M. Keville, Michael E. Landis, David O. Marler, Dominick N. Mazzone
  • Patent number: 5281328
    Abstract: A hydrocracking process uses a catalyst which is based on an ultra-large pore crystalline material. The crystalline material has pores of at least 13 .ANG. diameter arranged in a uniform manner and exhibits unusually large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams (50 torr and 25.degree. C.). A preferred form of the catalyst has a hexagonal structure which exhibits a hexagonal electron diffraction pattern that can be indexed with a d.sub.100 value greater than about 18 .ANG.. The hydrocracking catalysts based on these materials are capable of producing hydrocracked products of improved quality with lower nitrogen and aromatic content.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: January 25, 1994
    Assignee: Mobil Oil Corporation
    Inventors: Thomas F. Degnan, Jr., Kathleen M. Keville, David O. Marler, Dominick N. Mazzone
  • Patent number: 5260501
    Abstract: A novel oligomerization catalyst and process for upgrading olefins employing new synthetic catalyst of ultra-large pore crystalline material. The new crystalline material exhibits unusually large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams at 50 torr and 25.degree. C., a hexagonal electron diffraction pattern that can be indexed with a d.sub.100 value greater than about 18 Angstrom Units and a hexagonal arrangement of uniformly sized pores with a maximum perpendicular cross section of at least about 13 Angstrom units; and the porous crystalline material is impregnated with at least one oligomerization promoting metal, such as Groups VIIIA metals, preferably nickel.
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: November 9, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Nazeer A. Bhore, Ivy D. Johnson, Kathleen M. Keville, Quang N. Le, Grant H. Yokomizo
  • Patent number: 5183561
    Abstract: There is provided a process for demetallizing hydrocarbon feedstocks, such as resids or shale oil. The process uses a catalyst comprising at least one hydrogenation metal, such as nickel and molybdenum, and an ultra-large pore oxide material. This ultra-large pore oxide material may have uniformly large pores, e.g., having a size of about 40 Angstroms in diameter.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: February 2, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Charles T. Kresge, Michael E. Leonowicz, Wieslaw J. Roth, James C. Vartuli, Kathleen M. Keville, Stuart S. Shih, Thomas F. Degnan, Francis G. Dwyer, Michael E. Landis
  • Patent number: 5183557
    Abstract: A hydrocracking catalyst with improved distillate selectivity comprises, in addition to a metal component, a mesoporous crystalline material together with a molecular sieve component of relatively smaller pore size. The metal component of the catalyst is preferably associated with the high-surface area mesoporous component and high-metal loadings can be achieved in order to give good hydrogenation activity to the catalyst. The relatively smaller pore size component is preferably a large pore size zeolite such as zeolite Y or an intermediate pore size zeolite such as ZSM-5; this component provides a higher level of acidic functionality than the mesoporous component, achieving a functional separation in the hydrocracking process, permitting the metals loading and acidic activities to be optimized for good catalyst selectivity and activity. The catalysts enable the distillate selectivities comparable to amorphous catalyst to be achieved with improved conversion activity.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: February 2, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Thomas F. Degnan, Jr., Kathleen M. Keville, Michael E. Landis, David O. Marler, Dominick N. Mazzone
  • Patent number: 5156828
    Abstract: This invention relates to a method for synthesizing an ultra-large pore crystalline material and the use of such crystalline material as a sorbent and in catalytic conversion of organic and inorganic compounds. The synthesis method includes hydrothermally treating the as-synthesized crystalline material in the presence or absence of a binder. In a preferred embodiment, the crystalline material contains organic directing agent and is composited in an alumina binder. The crystalline material exhibits unusually large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams at 50 torr and 25.degree. C., a hexagonal electron diffraction pattern that can be indexed with a d.sub.100 value greater than about 18 Angstrom Units and a hexagonal arrangement of uniformly sized pores with a maximum perpendicular cross section of at least about 13 Angstrom units.
    Type: Grant
    Filed: July 18, 1991
    Date of Patent: October 20, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Thomas F. Degnan, Ivy D. Johnson, Kathleen M. Keville
  • Patent number: 5146029
    Abstract: Light olefins are converted to isoalkene-rich hydrocarbon products, e.g., isobutene and isoamylenes with zeolite MCM-22 catalyst.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: September 8, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Robert G. Bundens, Kathleen M. Keville, Albin Huss, Jr., Cynthia T-W Chu, Altaf Husain
  • Patent number: 4992615
    Abstract: The alkylation of isoparaffin with olefin to provide alkylate is carried out in the presence of, as catalyst, a porous crystalline material characterized by an X-ray diffraction pattern including interplanar d-spacings at 12.36.+-.0.4, 11.03.+-.0.2, 8.83.+-.0.14, 6.18.+-.0.12, 6.00.+-.0.10, 4.06.+-.0.07, 3.91.+-.0.07 and 3.42.+-.0.06 Angstroms.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: February 12, 1991
    Assignee: Mobil Oil Corp.
    Inventors: Albin Huss, Jr., Garry W. Kirker, Kathleen M. Keville, Robert T. Thomson
  • Patent number: 4986894
    Abstract: A process for dewaxing waxy hydrocarbon feedstocks to produce distillate fuels or lubricant stocks having improved pour point properties. The process comprises catalytic hydroisomerization of the feedstock over catalyst comprising a synthetic porous crystalline material characterized in its calcined form by an X-ray diffraction pattern including interplanar d-spacings at 12.36.+-.0.4, 11.03.+-.0.2, 8.83.+-.0.14, 6.18.+-.0.12, 6.00.+-.0.10, 4.06.+-.0.07, 3.91.+-.0.07 and 3.42.+-.0.06 Angstroms, and an Alpha Value of 10 or less.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: January 22, 1991
    Assignee: Mobil Oil Corp.
    Inventors: Kathleen M. Keville, Quang N. Le, Wang-Tsee T. Mo, Mae K. Rubin
  • Patent number: 4743507
    Abstract: A method for producing nonspherical particles including those of prolate spheroidal, oblate spheroidal, and ellipsoidal shape is described. A microparticulate latex can be produced wherein the microparticles in the latex are substantially identical in all dimensions. The overall shape, volume, and aspect ratio or aspect ratios of the particles can be systematically controlled. Non-spherical particles ranging in sizes from about 0.01 microns to about 100 microns can be produced from a variety of polymeric materials. Such particles can be used as model particles for a variety of scientific studies, calibration standards for electron microscopes, and in a variety of optical, thermal, electrical, and biomedical applications.
    Type: Grant
    Filed: September 12, 1986
    Date of Patent: May 10, 1988
    Inventors: Elias I. Franses, James M. Caruthers, Kathleen M. Keville