Patents by Inventor Khalid Karim

Khalid Karim 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: 6258992
    Abstract: Lower hydrocarbons are converted to carboxylic acids and/or dehydrogenated hydrocarbon product by contacting a feed mixture containing lower hydrocarbons, oxygen source, diluent, and sulfur-containing compound, with a multifunctional, mixed metal catalyst at a temperature from about 150° C. up to about 400° C. The lower hydrocarbons include C2-C4, and the presence of sulfur compound in the feed mixture results in increased yield of carboxylic acid and/or dehydrogenated hydrocarbon product.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: July 10, 2001
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Asad Khan
  • Patent number: 6160162
    Abstract: A mixed metal oxide Mo--V--Ga--Pd--Nb--X (where X=La, Te, Ge, Zn, Si, In or W) catalytic system providing a higher selectivity to acrylic acid in the low temperature partial oxidation of propane with a molecular oxygen-containing gas.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: December 12, 2000
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Abdullah Bin Nafisah
  • Patent number: 6156928
    Abstract: A mixed metal oxide catalytic system consisting of molybdenum, vanadium, lanthanum and palladium providing higher yields of acetic acid in low temperature single stage oxidation of ethane with molecular oxygen-containing gas without or with reduced production of by-products such as ethylene and CO.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: December 5, 2000
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, M. H. Al-Hazmi, Asad Khan
  • Patent number: 6143921
    Abstract: Methods for the catalytic production of vinyl acetate monomer from ethane, ethylene or an ethane/ethylene mixture using a first catalyst containing MoVNbPd, MoVLaPdNbX (where X is Al, Ga, Ge or Si) or MoVNbX (where X is P, B, Hf, Te, As or mixtures thereof) in the first step of oxidation and using a conventional VAM catalyst for the second step. The method produces high yields to acetic acid and vinyl acetate without the coproduction of carbon monoxide.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: November 7, 2000
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Alaa E. M. Adris
  • Patent number: 6143928
    Abstract: A mixed metal oxide catalytic system consisting of molybdenum, vanadium, palladium, lanthanum, niobium and X, wherein X is copper and/or chromium, providing higher yields of acrylic acid and acrolein in the low temperature oxidation of propylene with a molecular oxygen-containing gas without the production of side products such as CO.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: November 7, 2000
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Abdullah Bin Nafisa
  • Patent number: 6130356
    Abstract: A mixed metal oxide MoVLaPdNbXO catalytic system (wherein X=Al, Ga, Ge and/or Si) providing higher selectivity and space time yield of acetic acid at low pressure and low temperature in a single stage oxidation of ethane with a molecular oxygen-containing gas and steam.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: October 10, 2000
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Mohammad Al-Hazmi, Asad Khan
  • Patent number: 6114278
    Abstract: A mixed metal oxide Mo-V-Ga-Pd-Nb-X (where X=La, Te, Ge, Zn, Si, In or W) catalytic system providing a higher selectivity to acrylic acid in the low temperature partial oxidation of propane with a molecular oxygen-containing gas.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: September 5, 2000
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Abdullah Bin Nafisah
  • Patent number: 6087297
    Abstract: A mixed metal oxide catalytic system consisting of molybdenum, vanadium, lanthanum and palladium providing higher yields of acetic acid in low temperature single stage oxidation of ethane with molecular oxygen-containing gas without or with reduced production of by-products such as ethylene and CO.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: July 11, 2000
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Mohammad H. Al-Hazmi, Asad Khan
  • Patent number: 6060421
    Abstract: A mixed metal oxide MoVLaPdNbXO catalytic system (wherein X=Al, Ga, Ge and/or Si) providing higher selectivity and space time yield of acetic acid at low pressure and low temperature in a single stage oxidation of ethane with a molecular oxygen-containing gas and steam.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: May 9, 2000
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Mohammad Al-Hazmi, Asah Khan
  • Patent number: 6030920
    Abstract: An oxide catalyst comprising the elements Mo, V, Nb and Pd. The novel catalytic system provides both higher selectivity and yield of acetic acid in the low temperature one step vapor phase direct oxidation of ethane with molecular oxygen containing gas without production of side products such as ethylene and CO.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: February 29, 2000
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Edouard Mamedov, Mohammed H. Al-Hazmi, Anis H. Fakeeha, Mustaf A. Soliman, Yousef S. Al-Zeghayer, Ahmed S. Al-Fatish, Abdulsalm A. Al-Arify
  • Patent number: 6028221
    Abstract: A mixed metal oxide catalytic system comprising MoVNbPd or MoLaVPd providing higher selectivity and space time yield of acetic acid in the low temperature single stage oxidation of ethylene with molecular oxygen-containing gas and steam with very minimum or without the production of side products such as acetaldehyde, and methods of using the same.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: February 22, 2000
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Kareemudin Sheikh
  • Patent number: 6013597
    Abstract: An oxide catalyst comprising the elements Mo, V and Nb with small amounts of phosphorus, boron, hafnium, Te and/or As. The modified catalyst provides both higher selectivity and yield of acetic acid in the low temperature oxidation of ethane with molecular oxygen-containing gas. A process for the higher selective production of acetic acid by the catalytic oxidation of ethane with oxygen, in the presence of the improved catalyst.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: January 11, 2000
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Mohammed H. Al-Hazmi, Edouard Mamedov
  • Patent number: 5907056
    Abstract: An oxide catalyst comprising the elements Mo, V and Nb with small amounts of phosphorus, boron, hafnium, Te and/or As. The modified catalyst provides both higher selectivity and yield of acetic acid in the low temperature oxidation of ethane with molecular oxygen-containing gas. A process for the higher selective production of acetic acid by the catalytic oxidation of ethane with oxygen, in the presence of the improved catalyst.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: May 25, 1999
    Assignee: Saudi Basic Industries Corp.
    Inventors: Khalid Karim, Mohammed H. Al-Hazmi, Edouard Mamedov
  • Patent number: 5238675
    Abstract: Zeolites containing gallium in their crystalline framework structure are prepared by treating a zeolite material with a reagent capable of replacing a part of the aluminum of the framework structure of the zeolite material with the gallium. The method is especially applicable for the preparation of faujasitic materials of the formulaM.sub.(x+y/n) [ALO.sub.2 ].sub.x [GaO.sub.2 ].sub.y [SiO.sub.2 ].sub.zwherein:M is a charge balancing ion and n is the oxidation state thereof,x, y and z are the respective numbers of tetrahedra represented respectively by AlO.sub.2, GaO.sub.2 and SiO.sub.2,x+y+z=192, for a said faujasitic structure with no missing tetrahedra,x+y is from 0.1 to 71 inclusive, andy is from 0.01 to 60 inclusive.
    Type: Grant
    Filed: April 9, 1991
    Date of Patent: August 24, 1993
    Assignee: Unilever Patent Holdings B.V.
    Inventors: David J. Rawlence, Khalid Karim, John Dwyer
  • Patent number: 4414053
    Abstract: A polymer composition is disclosed and consists essentially of 100 parts by weight of an ethylene-alkyl acrylate copolymer and about 1 to 5 parts by weight of a polymer of a higher alkyl ester of acrylic or methacrylic acid. The polymer compositions have a lower heat seal strength than the ethylene-alkyl acrylate copolymer contained therein.
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: November 8, 1983
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, James H. Rea
  • Patent number: 4373066
    Abstract: Compatible blends of polymers are disclosed which contain (a) a low density ethylene polymer, (b) a copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid or vinyl acetate, (c) an ionomer resin, and (d) a tackifying resin such as an aromatic hydrocarbon resin.
    Type: Grant
    Filed: January 12, 1981
    Date of Patent: February 8, 1983
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, Pallavoor R. Lakshmanan, James H. Rea
  • Patent number: 4367113
    Abstract: Compatible blends of polymers are disclosed which contain (a) a high density ethylene polymer or an isotactic propylene polymer, (b) a copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid or vinyl acetate, (c) an ionomer resin, and (d) a tackifying resin such as a terpene resin.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: January 4, 1983
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, Pallavoor R. Lakshmanan, James H. Rea
  • Patent number: 4337298
    Abstract: Compatible blends of polymers are disclosed which contain (a) a low density ethylene polymer, (b) a copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid or vinyl acetate, (c) an ionomer resin, and (4) optionally a tackifying resin such as a glyceryl ester of a rosin acid.
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: June 29, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, Pallavoor R. Lakshmanan, James H. Rea
  • Patent number: 4337297
    Abstract: Blends of thermoplastic polymers which may be coextruded to form bonding layers in film laminates contain (a) a copolymer of ethylene with a lower alkyl acrylate or methacrylate or vinyl acetate, (b) a chlorinated ethylene polymer and optionally (c) a tackifying resin.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: June 29, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, James H. Rea
  • Patent number: 4288572
    Abstract: A compatible blend of polymers is disclosed and consists essentially of 100 parts by weight of an ethylene-alkyl acrylate copolymer and about 0.2 to 3 parts by weight of either poly(ethylene adipate) or poly(trimethylene adipate). The polymer blends have a lower sealing temperature than the ethylene-alkyl acrylate copolymer contained therein.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: September 8, 1981
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, James H. Rea