Patents by Inventor Hamid Alafandi

Hamid Alafandi 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).

  • Cracking catalysts containing silica-alumina gels
    Patent number: 4362652
    Abstract: This invention relates to the production of a cracking catalyst derived from hydrothermal treatment of an ammoniated silica-alumina gel, the alumina component of which is formulated from a mixture of anionic and cationic aluminum containing salts.
    Type: Grant
    Filed: July 8, 1981
    Date of Patent: December 7, 1982
    Assignee: Filtrol Corporation
    Inventors: Dennis Stamires, Hamid Alafandi
  • Large pore silica-alumina gels and method of producing the same
    Patent number: 4310441
    Abstract: A silica-alumina gel derived from a cationic aluminum source and also an anionic aluminum source and processes for producing such gel.
    Type: Grant
    Filed: October 4, 1979
    Date of Patent: January 12, 1982
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Ammoniated silica-alumina gel and catalyst containing the same and processes for producing same
    Patent number: 4264474
    Abstract: This invention relates to hydrothermal treatment of silica-alumina cogels resulting in a reduction in the NH.sub.4 content of the gel and the generation of a beta crystal phase and the employent of such gels as cracking catalysts.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: April 28, 1981
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Crystalline alumino silicate-silica-alumina gel hydrocarbon conversion catalysts and processes for producing same
    Patent number: 4259210
    Abstract: This invention relates to catalysts containing crystalline alumino-silicate zeolite and hydrothermally treated silica-alumina cogels and the employment of the same as cracking catalysts.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: March 31, 1981
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Crystallized silica-alumina cogel and catalyst employing the same
    Patent number: 4252684
    Abstract: This invention relates to alpha (Si, Al)O.sub.4 crystalline complex, and to silica-alumina gel and crystalline alumino silicate host containing said alpha (Si, Al)O.sub.4 complex; both gels and crystalline alumina silicates containing a novel crystalline phase resulting from the hydrothermal treatment of the host (Si, Al)O.sub.4 complexes, both amorphous gel and crystalline alumino silicates, in the presence of rare earth cations.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: February 24, 1981
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Crystalline alumino silicate-silica-alumina gel catalysts and processes for producing same
    Patent number: 4246138
    Abstract: This invention relates to catalysts containing crystalline alumino-silicate zeolite, hydrothermally treated silica-alumina cogels and the employment of the same as cracking catalysts.
    Type: Grant
    Filed: January 16, 1979
    Date of Patent: January 20, 1981
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Exchanged mordenite catalysts and processes for producing the same
    Patent number: 4240932
    Abstract: This invention relates to exchanged mordenite and catalysts employing the same.
    Type: Grant
    Filed: January 18, 1979
    Date of Patent: December 23, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Cracking catalyst and method of producing the same
    Patent number: 4239651
    Abstract: This invention relates to exchanged ammoniated cogels having improved catalytic activity and process for producing the same.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: December 16, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Ammoniated silica-alumina gel and catalyst containing the same and processes for producing same
    Patent number: 4238360
    Abstract: This invention relates to hydrothermally treated silica-alumina cogels resulting in a reduction in the NH.sub.4 content of the gel and the employment of such gels as cracking catalysts.
    Type: Grant
    Filed: January 16, 1979
    Date of Patent: December 9, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Ammoniated silica-alumina gel and catalyst containing the same and processes for producing same
    Patent number: 4238361
    Abstract: This invention relates to hydrothermal treatment of silica-alumina cogels resulting in a reduction in the NH.sub.4 content of the gel and the generation of a gamma crystal phase and the employment of such gels as cracking catalysts.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: December 9, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Crystallized silica-alumina cogel and catalyst employing the same
    Patent number: 4234457
    Abstract: This invention relates to alpha (Si, Al)O.sub.4 crystalline complex, and to silica-alumina gel and crystalline alumino silicate host containing said alpha (Si, Al)O.sub.4 complex; both gels and crystalline alumina silicates containing a novel crystalline phase resulting from the hydrothermal treatment of the host (Si, Al)O.sub.4 complexes, both amorphous gel and crystalline alumino silicates, in the presence of rare earth cations.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: November 18, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Aluminum faujasites, catalyst containing same and process of producing same
    Patent number: 4224188
    Abstract: This invention relates to zeolites of the faujasite type generally referred to as X or Y zeolites which contain both aluminum and NH.sub.4 in exchange position and catalysts employing the same.The zeolite of our invention is derived from the sodium form of the zeolite by first exchanging the sodium form with an aluminum ion to replace a substantial portion of the sodium and further reducing the sodium content of the zeolite by exchange with an ammonium ion.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: September 23, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Exchanged faujasite zeolite catalyst containing same and process for producing same
    Patent number: 4215016
    Abstract: Exchanged zeolite of the faujasite type is produced by exchanging the sodium zeolite at super atmospheric pressures at temperatures below about 500.degree. F. with salt solutions in ratios of cations in excess of an equivalent of the cation per equivalent of the sodium in the zeolite.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: July 29, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Hydroprocessing catalysts
    Patent number: 4198321
    Abstract: This invention relates to a hydroprocessing catalyst particularly useful in hydrocracking comprising a low sodium faujasite zeolite produced by a high pressure exchange of Na cations with a solution of an ammonium salt as a substrate for incorporation of a hydrogenating metal compound.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: April 15, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Method of producing zeolitic catalysts with silica alumina matrix
    Patent number: 4198319
    Abstract: This invention relates to zeolitic catalysts composed of an exchanged zeolite of the faujasite type and a matrix composed of clay and an alumina-silica component.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: April 15, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Rare earth exchange faujasite zeolite catalyst containing same and process for producing same
    Patent number: 4192778
    Abstract: A rare earth exchanged zeolite of the faujasite type in which the equivalent of Na is less than 0.1 and the rare earth is at least 0.9 equivalents per gram atom of aluminum and catalysts including the same.
    Type: Grant
    Filed: January 16, 1978
    Date of Patent: March 11, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Rare earth exchange X zeolites, catalyst employing the same and method for producing the same
    Patent number: 4164483
    Abstract: This invention relates to the preparation of rare earth exchanged X type faujasite zeolites in which the Na content is reduced by exchange with rare earth cations to introduce in excess of about 0.9 equivalents of rare earth cations per gram atom of aluminum and catalysts employing the same.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: August 14, 1979
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Shaped catalyst support
    Patent number: 4142994
    Abstract: A mechanically strong, thermally stable porous siliceous particle having a high pore volume and surface area with a major portion of the pore volume in pores of radii more than 20 Angstroms and the process of producing the particles by shaping a clay, acid-leached to a degree insufficient to destroy the plasticity of the clay, forming the leached clay into shaped particles, calcining the particles and further extracting the calcined clay particles without impairing their shape.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: March 6, 1979
    Assignee: Filtrol Corporation
    Inventor: Hamid Alafandi
  • Method of producing zeolitic catalysts with silica alumina matrix
    Patent number: 4142995
    Abstract: This invention relates to zeolitic catalysts composed of an exchanged zeolite of the faujasite type and a matrix composed of alumina and an alumina-silica component.
    Type: Grant
    Filed: February 16, 1977
    Date of Patent: March 6, 1979
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Zeolitic catalysts and method of producing same
    Patent number: 4100108
    Abstract: This invention relates to production of improved zeolitic catalysts produced from mixtures of cation exchanged zeolites of the faujasite type incorporated into a matrix such as alumina, silica-alumina gels and clay or mixtures thereof.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: July 11, 1978
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires