Patents by Inventor Yajnavalkya Subrai Bhat

Yajnavalkya Subrai Bhat 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: 7268268
    Abstract: A process for the dimerization of at least one olefin with a carbon number between 2 and 10 by contacting the feed with a catalyst system comprising at least: (a) tectometallosilicate zeolite with having TON-type structure, (b) tectometallosilicate zeolite with having MTT-type structure, (c) tectometallosilicate zeolite with the same structure as that of the ZSM-48 zeolite, or (d) silicoaluminophosphate (SAPO) zeo-type with AEL-type structure; under dimerization condition to produce highly branched olefins.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: September 11, 2007
    Assignee: Saudi Basic Industries Corporation
    Inventors: Farouk al-Soufi, Sami A. I. Barri, Yajnavalkya Subrai Bhat, Altaf Husain
  • Patent number: 6989347
    Abstract: A catalyst composition for the production of carboxylic acids by the oxidation of the corresponding unsaturated aldehydes, and methods for making and using the catalyst compositions. The catalysts include compositions of the formula: MoaVbAlcXdYeOz wherein X is at least one element selected from W and Mn; Y is at least one element selected from Pd, Sb, Ca, P, Ga, Ge, Si, Mg, Nb, and K; a is 1; b is 0.01–0.9; c is 0<0.2; d is 0<0.5; e is 0<0.5; and z is an integer representing the number of oxygen atoms required to satisfy the valency of the remaining elements in the composition. Using the catalyst composition of the present invention, one may effectively oxidize the desired starting materials at relatively high levels of conversion, selectivity, and productivity, and with minimal side products.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: January 24, 2006
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Asad Ahmad Khan
  • Publication number: 20040030212
    Abstract: A process for the dimerization of at least one olefin with a carbon number between 2 and 10 by contacting the feed with a catalyst system comprising at least: (a) tectometallosilicate zeolite with having TON-type structure, (b) tectometalloslicate zeolite with having MTT-type structure, (c) tectometallosilicate zeolite with the same structure as that of the ZSM-48 zeolite, or (d) silicoaluminophosphate (SAPO) zeo-type with AEL-type structure; under dimerization condition to produce highly branched olefins.
    Type: Application
    Filed: June 30, 2003
    Publication date: February 12, 2004
    Inventors: Farouk Al-Soufi, Sami A.I. Barri, Yajnavalkya Subrai Bhat, Altaf Husain
  • Patent number: 6646158
    Abstract: A mixed metal oxide Mo—V—Ga—Pd—Nb—X catalytic system, where X is selected from La, Te, and Zn, provides the oxidation of C2-C8 hydrocarbons to corresponding acids with a molecular oxygen-containing gas.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: November 11, 2003
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Abdullah Bin Nafisah, Asad Ahmed Khan
  • Patent number: 6620973
    Abstract: A catalyst composition for the production of unsaturated aldehydes by the oxidation of the corresponding olefins, and methods of making and using such catalyst compositions. The catalysts of the present invention include compositions of the formula: MoaPdbBicFedX1eX2fX3gOz, wherein X1 is an element selected from Co, Ni, V, Pt, Rh, or mixtures thereof; X2 is an element selected from Al, Ga, Ge, Mn, Nb, Zn, Ag, P, Si, W, or mixtures thereof; X3 is an element selected from K, Mg, Rb, Ca, Sr, Ba, Na, In, or mixtures thereof; a is 1; b is 0<b<0.3; c is 0<c<0.9; d is 0<d<0.9; e is 0<e<0.9; f is 0<f<0.9; g is 0<g<0.3; and z is an integer representing the number of oxygen atoms required to satisfy the valency of Mo, Pd, Bi, Fe, X1, X2, and X3 in the catalyst composition. Using the methods of the present invention, one may effectively oxidize the desired starting materials at relatively high levels of conversion, selectivity, and productivity, and with minimal side products.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: September 16, 2003
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Asad Ahmad Khan
  • Publication number: 20020198406
    Abstract: A process for the production of alpha-beta unsaturated carboxylic acid with high yield at low temperature and atmospheric pressure, includes two stages for catalytic vapor-phase oxidation of olefins with molecular oxygen.
    Type: Application
    Filed: August 12, 2002
    Publication date: December 26, 2002
    Applicant: Saudi Basic Industries Corporation, Saudi Arabia
    Inventors: Khalid Karim, Yajnavalkya Subrai Bhat, Asad Ahmad Khan, Syed Irshad Zaheer, Abdullah Bin Nafisa
  • Patent number: 6444845
    Abstract: The present invention provides a catalyst composition for the production of carboxylic acids by the oxidation of the corresponding unsaturated aldehydes, and methods for making and using the catalyst compositions. The catalysts include compositions of the formula: MoaVbAlcXdYeOz wherein X is at least one element selected from W and Mn; Y is at least one element selected from Pd, Sb, Ca, P, Ga, Ge, Si, Mg, Nb, and K; a is 1; b is 0.01-0.9; c is 0<0.2; d is 0<0.5; e is 0<0.5; and z is an integer representing the number of oxygen atoms required to satisfy the valency of the remaining elements in the composition. Using the catalyst composition of the present invention, one may effectively oxidize the desired starting materials at relatively high levels of conversion, selectivity, and productivity, and with minimal side products.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: September 3, 2002
    Assignee: Saudia Basic Industries Corporation
    Inventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Asad Ahmad Khan
  • Patent number: 6441227
    Abstract: A process for the production of alpha-beta unsaturated carboxylic acid with high yield at low temperature and atmospheric pressure, includes two stages for catalytic vapor-phase oxidation of olefins with molecular oxygen.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: August 27, 2002
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Yajnavalkya Subrai Bhat, Asad Ahmad Khan, Syed Irshad Zaheer, Abdullah Bin Nafisa
  • Publication number: 20020115887
    Abstract: The present invention provides a catalyst composition for the production of carboxylic acids by the oxidation of the corresponding unsaturated aldehydes, and methods for making and using the catalyst compositions.
    Type: Application
    Filed: April 25, 2002
    Publication date: August 22, 2002
    Applicant: Saudi Basic Industries Corporation, Saudi Arabia
    Inventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Asad Ahmad Khan
  • Publication number: 20020058847
    Abstract: The present invention provides a catalyst composition for the production of unsaturated aldehydes by the oxidation of the corresponding olefins, and methods of making and using such catalyst compositions.
    Type: Application
    Filed: October 19, 2001
    Publication date: May 16, 2002
    Applicant: Saudi Basic Industries Corporation, Saudi Arabia
    Inventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Asad Ahmad Khan
  • Patent number: 6337424
    Abstract: The present invention provides a catalyst composition for the production of unsaturated aldehydes by the oxidation of the corresponding olefins, and methods of making and using such catalyst compositions. The catalysts of the present invention include compositions of the formula: MoaPdbBicFedX1eX2fX3gOz, wherein X1 is an element selected from Co, Ni, V, Pt, Rh, or mixtures thereof; X2 is an element selected from Al, Ga, Ge, Mn, Nb, Zn, Ag, P, Si, W, or mixtures thereof; X3 is an element selected from K, Mg, Rb, Ca, Sr, Ba, Na, In, or mixtures thereof; a is 1; b is 0<b<0.3;c is 0<c<0.9; d is 0<d<0.9; e is 0<e<0.9; f is 0<f<0.9; g is 0<g<0.3; and z is an integer representing the number of oxygen atoms required to satisfy the valency of Mo, Pd, Bi, Fe, X1, X2, and X3 in the catalyst composition.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: January 8, 2002
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Asad Ahmad 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: 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: 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