Patents by Inventor Scott Han

Scott Han 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: 6407031
    Abstract: A catalyst comprising a promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.
    Type: Grant
    Filed: August 11, 2001
    Date of Patent: June 18, 2002
    Assignee: Rohm and Haas Company
    Inventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song
  • Patent number: 6407280
    Abstract: A catalyst comprising a promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: June 18, 2002
    Assignee: Rohm and Haas Company
    Inventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song, Dominique Hung Nhu Le, Elsie Mae Vickery
  • Publication number: 20020072629
    Abstract: A catalyst comprising a promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.
    Type: Application
    Filed: August 10, 2001
    Publication date: June 13, 2002
    Inventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Dominique Hung Nhu Le
  • Patent number: 6403525
    Abstract: A catalyst comprising an in promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane, or a mixture of an alkane and an alkene, to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane, or a mixture of an alkane and an alkene, to an unsaturated nitrile
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: June 11, 2002
    Assignee: Rohm and Haas Company
    Inventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Elsie Mae Vickery
  • Publication number: 20020065431
    Abstract: A catalyst comprising a promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.
    Type: Application
    Filed: August 10, 2001
    Publication date: May 30, 2002
    Inventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song, Dominique Hung Nhu Le, Elsie Mae Vickery
  • Publication number: 20020062042
    Abstract: A catalyst comprising a promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.
    Type: Application
    Filed: August 11, 2001
    Publication date: May 23, 2002
    Inventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song
  • Publication number: 20020062038
    Abstract: A catalyst comprising a promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.
    Type: Application
    Filed: August 10, 2001
    Publication date: May 23, 2002
    Inventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song
  • Publication number: 20020058836
    Abstract: A catalyst comprising an In promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane, or a mixture of an alkane and an alkene, to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane, or a mixture of an alkane and an alkene, to an unsaturated nitrile.
    Type: Application
    Filed: August 10, 2001
    Publication date: May 16, 2002
    Inventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Elsie Mae Vickery
  • Publication number: 20020058835
    Abstract: A catalyst comprising a promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.
    Type: Application
    Filed: August 10, 2001
    Publication date: May 16, 2002
    Inventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song
  • Patent number: 6224748
    Abstract: A process for hydrocracking heavy, high aromatic content feeds, such as cycle oil, using a catalyst composition containing a hydrogenation/dehydrogenation component, such as a noble metal, and an acidic solid component including a Group IVB metal oxide modified with an oxyanion of a Group VIB metal.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: May 1, 2001
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Scott Han, Daniel J. Martenak, Jose G. Santiesteban, Dennis E. Walsh
  • Patent number: 6217747
    Abstract: A process for hydrocracking heavy hydrocarbon feeds using a catalyst composition containing a hydrogenation/dehydrogenation component, such as a noble metal, and an acidic solid component including a Group IVB metal oxide modified with an oxyanion of a Group VIB metal. The hydrocracking product has high isoparaffin to normal paraffin ratios and with minimal ethane and methane byproducts at high conversions. The hydrocracking step is useful in processes for producing high quality lubricating oil basestocks, along with naphtha and distillate products.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: April 17, 2001
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Scott Han, Daniel J. Martenak, Jose G. Santiesteban, Dennis E. Walsh
  • Patent number: 6162757
    Abstract: A novel synthesis composition of a solid acid containing zirconium, in addition to a rare earth element, such as cerium, has the potential for catalytic conversions of hydrocarbons, especially for isomerization of paraffins, ring opening of cyclics, hydrocracking, alkylation, hydrogenation of polynuclear aromatics, selective catalytic reduction of nitrogen oxides, and oligomerization of light olefins.
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: December 19, 2000
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Scott Han, Scott A. Stevenson, James C. Vartuli
  • Patent number: 6136291
    Abstract: Novel crystalline zeolitic materials of the faujasite structure having an increased ratio of zeolitic surface area to mesoporous surface area and distinctive X-Ray Diffraction peak ratios are produced by calcining zeolite Y of low sodium content at temperatures above 600.degree. C.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: October 24, 2000
    Assignee: Mobile Oil Corporation
    Inventors: Arthur W. Chester, C. Patricia Clement, Scott Han
  • Patent number: 5993643
    Abstract: There is provided a hydrocracking process using a catalyst comprising a hydrogenation/dehydrogenation component, such as a noble metal, and an acidic solid component comprising a Group IVB metal oxide modified with an oxyanion of a Group VIB metal. An example of this catalyst is zirconia, modified with tungstate and platinum. This catalyst is used to selectively hydrocrack naphtha range hydrocarbons to reduce the endpoint of reformulated gasolines.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: November 30, 1999
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Scott Han, Roger A. Morrison, Jose G. Santiesteban
  • Patent number: 5990365
    Abstract: There is provided a catalyst comprising ZSM-5, rhenium which is impregnated onto the catalyst, and a selectivating agent. The selectivating agent may be coke and/or a siliceous material. The catalyst is particularly useful for catalyzing toluene disproportionation reactions. Methods for making this catalyst and processes for using this catalyst in toluene disproportionation are also provided.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: November 23, 1999
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Frank T. DiGuiseppi, Scott Han
  • Patent number: 5969143
    Abstract: There is provided a high efficiency base synthesis process for shape selective production of pyridine and picoline products from ammonia and C.sub.1-5 carbonyl compounds. The process includes reacting ammonia and at least one C.sub.1-5 carbonyl reactant under suitable reaction conditions of temperature, pressure, and space velocity in the presence of a catalyst comprising a molecular sieve to produce a primary product comprising pyridine or picoline products and polyalkylpyridines or other higher molecular weight aromatic species, separating and collecting the pyridine or picoline products from the polyalkylpyridines or other higher molecular weight aromatic species, and circulating the polyalkylpyridines or other higher molecular weight aromatic species to the same or another catalyst under conversion conditions to yield additional pyridine or picoline products with substantially reduced amounts of polyalkylpyridines or other higher molecular weight aromatic species.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: October 19, 1999
    Assignee: Mobil Oil Corporation
    Inventors: Arthur Chester, Scott Han, Dominick N. Mazzone, Chaya R. Venkat
  • Patent number: 5854170
    Abstract: There is provided a method for preparing an acidic solid comprising a Group IVB metal oxide modified with an oxyanion of a Group VIB metal. An example of this acidic solid is zirconia, modified with tungstate. This modified solid oxide may be used as a catalyst, for example, to isomerize C.sub.4 to C.sub.8 paraffins. The modified solid oxide is treated with hydrogen at elevated temperatures to enhance catalytic properties of the material.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: December 29, 1998
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Frank T. DiGuiseppi, Scott Han, Jose G. Santiesteban, David L. Stern
  • Patent number: 5611912
    Abstract: A process for the production of diesel fuel with a high cetane number at a low cloud point, which involves hydrocracking highly aromatic fractions obtained from catalytic cracking operations. The fraction of hydrocracker effluent which boils between about 400.degree. F. (205.degree. C.) and 1000.degree. F. (538.degree. C.) is subsequently catalytically dewaxed in order to obtain a cloud point of no more than 41.degree. F. (5.degree. C.). The hydrocracker effluent fraction is preferably recycled to the hydrocracking step prior to dewaxing.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: March 18, 1997
    Assignee: Mobil Oil Corporation
    Inventors: Scott Han, Roland H. Heck, Michael E. Ehlers
  • Patent number: 5563311
    Abstract: Relatively short chain alkyl aromatic compounds are prepared by alkylating or transalkylating an alkylatable aromatic compound with a relatively short chain alkylating or transalkylating agent under sufficient reaction conditions in the presence of catalyst comprising an acidic solid material which comprises a Group IVB metal oxide, such as zirconia, modified with an oxyanion of a Group VIB metal, such as tungsten.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: October 8, 1996
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Jane C. Cheng, Scott Han, Jos e G. Santiesteban, Dennis E. Walsh
  • Patent number: 5563310
    Abstract: A process for the conversion of toluene to xylenes by alkylation with methanol over an acidic solid catalyst with a Group IVB metal oxide modified with an oxyanion of a Group VIB metal.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: October 8, 1996
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Frank T. DiGuiseppi, Scott Han