Patents by Inventor Gyanesh P. Khare

Gyanesh P. Khare 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: 5780001
    Abstract: A composition and method of making a strength enhanced composition are described. The composition comprises zinc oxide, silica and colloidal oxide solution. The colloidal oxide solution is utilized as a binding agent to provide a strength enhanced absorbent composition that can be utilized in an absorption process for the purpose of removing sulfur contaminants from fluid streams.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: July 14, 1998
    Assignee: Phillips Petroleum Company
    Inventors: Gyanesh P. Khare, Ralph E. Bonnell
  • Patent number: 5776331
    Abstract: A sorbent composition is provided comprising: (a) a zinc component; (b) a colloidal oxide component; and (c) a metal oxide component. This sorbent composition can be subjected to a steaming treatment that improves its sulfur loading capability.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: July 7, 1998
    Assignee: Phillips Petroleum Company
    Inventors: Gyanesh P. Khare, Donald H. Kubicek
  • Patent number: 5726117
    Abstract: A sorbent composition is provided comprising: (a) a zinc component; (b) a colloidal oxide component; and (c) a metal oxide component. This sorbent composition can be subjected to a steaming treatment that improves its sulfur loading capability.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 10, 1998
    Assignee: Phillips Petroleum Company
    Inventors: Gyanesh P. Khare, Donald H. Kubicek
  • Patent number: 5710091
    Abstract: A process to produce a sorbent composition is provided. This process comprises: (a) contacting a zinc component, an alumina component, and a dispersant component, to form a mixture; and then (b) spray drying said mixture to form particles; and then (c) contacting said particles with a zinc compound, wherein said zinc compound is zinc oxide, or it is a compound convertible to zinc oxide, to form a sorbent composition.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 20, 1998
    Assignee: Phillips Petroleum Company
    Inventor: Gyanesh P. Khare
  • Patent number: 5710083
    Abstract: A process to rejuvenate a spent sorbent to produce a rejuvenated sorbent is provided. This process comprises: (a) contacting a spent sorbent with a zinc composition that comprises zinc oxide, or a precursor to zinc oxide, to form a contacted composition; (b) drying said contacted composition at a temperature in the range of about 25.degree. C. to about 375.degree. C. for a time period in the range of about 1 minute to about 24 hours, to form a dried, contacted composition; and (c) calcining said dried, contacted composition at a temperature in the range of about 400.degree. C. to about 800.degree. C. for a time period in the range of about 1 minute to about 24 hours, to form said rejuvenated sorbent.
    Type: Grant
    Filed: August 14, 1996
    Date of Patent: January 20, 1998
    Assignee: Phillips Petroleum Company
    Inventor: Gyanesh P. Khare
  • Patent number: 5710089
    Abstract: A process to make a sorbent composition said process comprising: (a) contacting (i) at least one zinc component, where said zinc component consists essentially of zinc oxide, or a compound convertible to zinc oxide, (ii) at least one silica component, where said silica component consists essentially of silica, or a compound convertible to silica, (iii) at least one colloidal oxide component, where said colloidal oxide component consists essentially of particles of a metal oxide where said metal oxide is selected from the group consisting of alumina, silica, titania, zirconia, tin oxide, antimony oxide, cerium oxide, yttrium oxide, copper oxide, iron oxide, manganese oxide, molybdenum oxide, tungsten oxide, chromium oxide, and mixtures thereof, (iv) at least one pore generator component, wherein the amount of pore generator is from 1 to about 15 weight percent based on the total weight of said sorbent composition, and wherein said sorbent composition consists essentially of components (a)(i) through (a)(iv) to
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 20, 1998
    Assignee: Phillips Petroleum Company
    Inventor: Gyanesh P. Khare
  • Patent number: 5439867
    Abstract: Provided is an improved process for removing hydrogen sulfide from fluid streams by contacting a hydrogen sulfide contaminated fluid stream with a novel fluidizable sorbent composition comprising zinc oxide, alumina and silica. Further provided is a novel method for producing a fluidizable sorbent composition containing zinc oxide, alumina and silica.
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: August 8, 1995
    Assignee: Phillips Petroleum Company
    Inventors: Gyanesh P. Khare, Bryan W. Cass
  • Patent number: 5430220
    Abstract: In a process for preparing a dehydrogenation catalyst of the type in which a support comprising zinc aluminate is impregnated with at least one of platinum and tin from an impregnation solution, the improvement comprises simultaneously impregnating the support with the platinum and the tin by contacting the support with an impregnation solution which comprises, in solution, a tin compound, a platinum compound, and carboxylic acid. The thus prepared catalyst can be employed in the dehydrogenation of at least one alkane containing 2-8 carbon atoms per molecule in the presence of steam.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: July 4, 1995
    Assignee: Phillips Petroleum Company
    Inventors: Gyanesh P. Khare, Randall A. Porter
  • Patent number: 5344805
    Abstract: In a process for preparing a dehydrogenation catalyst of the type in which a support comprising zinc aluminate is impregnated with at least one of platinum and tin from an impregnation solution, the improvement comprises simultaneously impregnating the support with the platinum and the tin by contacting the support with an impregnation solution which comprises, in solution, a tin compound, a platinum compound, and a carboxylic acid. The thus prepared catalyst can be employed in the dehydrogenation of at least one alkane containing 2-8 carbon atoms per molecule in the presence of steam.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: September 6, 1994
    Assignee: Phillips Petroleum Company
    Inventors: Gyanesh P. Khare, Randall A. Porter
  • Patent number: 5306685
    Abstract: Hydrogen sulfide is removed from a gas by contacting it with an absorbent composition consisting essentially of a mixed oxide of iron, zinc and nickel and an inorganic binder.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: April 26, 1994
    Assignee: Phillips Petroleum Company
    Inventor: Gyanesh P. Khare
  • Patent number: 5304696
    Abstract: A process for the double bond isomerization of olefinic compounds is provided comprising contacting an olefinic compound and a sulfated zirconia catalyst.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: April 19, 1994
    Assignee: Phillips Petroleum Company
    Inventors: Gyanesh P. Khare, Iqbal Ahmed
  • Patent number: 5298154
    Abstract: A catalytic composite comprising a combination of catalytically effective amounts of a platinum component, optionally a second metal component such as tin or rhenium, and a halogen component with a porous carrier support material is disclosed. The platinum, second metal (if present) and halogen components are present in the catalytic composite in amounts, calculated on an elemental basis, of about 0.2 to about 0.4 wt. percent platinum metal, about 0.2 to about 0.5 wt. percent the second metal, and 0.5 to about 1.5 wt. percent halogen. Moreover, the metallic components are substantially uniformly distributed throughout the porous carrier support material. The support material is spherical gamma alumina having a characteristic pore structure including "superpores" (200-10,000 nm or greater) interconnected with "mesopores" (5-20 nm), wherein 80% or more of the pore volume (N.sub.2) resides in pores of less than 150 .ANG..
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: March 29, 1994
    Inventors: Gyanesh P. Khare, Roland von Ballmoos
  • Patent number: 5281445
    Abstract: Provided is an improved process for removing hydrogen sulfide from fluid streams by contacting hydrogen sulfide contaminated fluid streams with a novel composition comprising zinc oxide and a diatomite material coated with a colloidal oxide. Additionally, a novel method for producing a composition comprising the steps of coating a diatomite material with a colloidal oxide solution followed by mixing the thus coated diatomite material with zinc oxide to form a paste is further provided.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: January 25, 1994
    Assignee: Phillips Petroleum Company
    Inventor: Gyanesh P. Khare
  • Patent number: 5269990
    Abstract: Shaped zirconia particles are prepared by mixing zirconia powder with an aqueous colloidal zirconia solution or an aqueous acid solution so as to obtain a shapable mixture containing about 4-40 weight-% water, shaping this mixture, and heating the shaped particles at a temperature in excess of about 90.degree. C.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: December 14, 1993
    Assignee: Phillips Petroleum Company
    Inventors: Gyanesh P. Khare, Hobert L. Williams
  • Patent number: 5244641
    Abstract: Hydrogen sulfide is removed from a gas by contacting it with an absorbent composition consisting essentially of a mixed oxide of iron, zinc and nickel and an inorganic binder.
    Type: Grant
    Filed: April 28, 1992
    Date of Patent: September 14, 1993
    Assignee: Phillips Petroleum Company
    Inventor: Gyanesh P. Khare
  • Patent number: 5238896
    Abstract: A composition is prepared by mixing at least one aluminum halide (preferably AlCl.sub.3), at least one copper(II) salt (preferably CuCl.sub.2), calcium aluminate and at least one alcohol (preferably ethanol), shaping the mixture, and drying the shaped particles. The thus-obtained catalyst composition can be employed as a catalyst in the isomerization of alkanes and/or cycloalkanes.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: August 24, 1993
    Assignee: Phillips Petroleum Company
    Inventor: Gyanesh P. Khare
  • Patent number: 5220091
    Abstract: A process for dehydrogenating C.sub.2 -C.sub.8 alkanes in the presence of steam and a catalyst composition containing zinc aluminate, a tin oxide and platinum, wherein the zinc aluminate support material has been prepared by calcining zinc oxide and a hydrated alumina (so as to alleviate coking during the dehydrogenation process).
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: June 15, 1993
    Assignee: Phillips Petroleum Company
    Inventors: Francis M. Brinkmeyer, Kelly B. Savage, Gyanesh P. Khare, Donald H. Kubicek
  • Patent number: 5202519
    Abstract: A catalyst composition is prepared by mixing at least an aluminum halide (preferably AlCl.sub.3), at least one copper(II) salt (preferably CuCl.sub.2), calcium aluminate and at least one alcohol (preferably ethanol), shaping the mixture, and drying the shaped particles. The thus-obtained catalyst composition is employed in the isomerization of alkanes and/or cycloalkanes.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: April 13, 1993
    Assignee: Phillips Petroleum Company
    Inventor: Gyanesh P. Khare
  • Patent number: 5166121
    Abstract: A catalytic composite comprising a combination of catalytically effective amounts of a platinum component, optionally a second metal component such as tin or rhenium, and a halogen component with a porous carrier support material is disclosed. The platinum, second metal (if present) and halogen components are present in the catalytic composite in amounts, calculated on an elemental basis, of about 0.2 to about 0.4 wt. percent platinum metal, about 0.2 to about 0.5 wt. percent the second metal, and 0.5 to about 1.5 wt. percent halogen. Moreover, the metallic components are substantially uniformly distributed throughout the porous carrier support material. The support material is spherical gamma alumina having a characteristic pore structure including "superpores" (200-10,000 nm or greater) interconnected with "mesopores" (5-20 nm), wherein 80% or more of the pore volume (N.sub.2) resides in pores of less than 150 .ANG..
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: November 24, 1992
    Assignee: Engelhard Corporation
    Inventors: Gyanesh P. Khare, Roland von Ballmoos