Patents by Inventor Bernard F. Mulaskey
Bernard F. Mulaskey 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).
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Patent number: 6548030Abstract: Disclosed is a method for reforming hydrocarbons comprising contacting the hydrocarbons with a catalyst in a reactor system of improved resistance to carburization and metal dusting under conditions of low sulfur.Type: GrantFiled: September 10, 2001Date of Patent: April 15, 2003Assignee: Chevron Phillips Chemical Company LPInventors: John V. Heyse, Bernard F. Mulaskey, Robert A. Innes, Daniel P. Hagewiesche, Gale L. Hubred, Steven C. Moore, Paul F. Bryan, Robert L. Hise, Steven E. Trumbull, Randall J. Harris
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Publication number: 20020179495Abstract: Disclosed is a method for reforming hydrocarbons comprising contacting the hydrocarbons with a catalyst in a reactor system of improved resistance to carburization and metal dusting under conditions of low sulfur.Type: ApplicationFiled: September 10, 2001Publication date: December 5, 2002Inventors: John V. Heyse, Bernard F. Mulaskey, Robert A. Innes, Daniel P. Hagewiesche, Gale L. Hubred, Steven C. Moore, Paul F. Bryan, Robert L. Hise, Steven E. Trumbull, Randall J. Harris
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Patent number: 5883031Abstract: A process for regenerating a coke contaminated reforming catalyst comprising platinum on a molecular sieve, said process consisting essentially of contacting said catalyst with a halogen-free oxygen-containing gas at a temperature of less than 780.degree. F. for a sufficient period of time such that the aromatization activity is restored to within 20.degree. F. of the activity said catalyst possessed at the start of the previous run cycle.Type: GrantFiled: January 17, 1995Date of Patent: March 16, 1999Assignee: Chevron Chemical CompanyInventors: Robert A. Innes, Dennis L. Holtermann, Bernard F. Mulaskey
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Patent number: 5866743Abstract: Carburization and metal-dusting while hydrodealkylating a hydrodealkylatable hydrocarbon are reduced even in the substantial absence of added sulfur.Type: GrantFiled: January 11, 1996Date of Patent: February 2, 1999Assignee: Chevron Chemical CompanyInventors: John V. Heyse, Bernard F. Mulaskey, Robert A. Innes, Daniel P. Hagewiesche, William J. Cannella, David C. Kramer
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Patent number: 5863418Abstract: Disclosed is a method for reforming hydrocarbons comprising contacting the hydrocarbons with a catalyst in a reactor system of improved resistance to carburization and metal dusting under conditions of low sulfur.Type: GrantFiled: February 9, 1996Date of Patent: January 26, 1999Assignee: Chevron Chemical CompanyInventors: John V. Heyse, Bernard F. Mulaskey, Robert A. Innes, Daniel P. Hagewiesche, Gale L. Hubred, Steven C. Moore, Paul F. Bryan, Robert L. Hise, Steven E. Trumbull, Randall J. Harris, Alan G. Kunze
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Patent number: 5849969Abstract: Carburization and metal-dusting while hydrodealkylating a hydrodealkylatable hydrocarbon are reduced even in the substantial absence of sulfur.Type: GrantFiled: June 7, 1995Date of Patent: December 15, 1998Assignee: Chevron Chemical CompanyInventors: John V. Heyse, Bernard F. Mulaskey, Robert A. Innes, Daniel P. Hagewiesche, William J. Cannella, David C. Kramer
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Patent number: 5723707Abstract: Disclosed are methods for dehydrogenation in reactor systems of improved resistance to carburization under dehydrogenation conditions.Type: GrantFiled: December 12, 1994Date of Patent: March 3, 1998Assignee: Chevron Chemical CompanyInventors: John V. Heyse, Paul G. Johnson, Bernard F. Mulaskey
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Patent number: 5676821Abstract: Disclosed is a method for reforming hydrocarbons comprising contacting the hydrocarbons with a catalyst in a reactor system of improved resistance to carburization and metal dusting under conditions of low sulfur.Type: GrantFiled: June 7, 1995Date of Patent: October 14, 1997Assignee: Chevron Chemical CompanyInventors: John V. Heyse, Bernard F. Mulaskey, Robert L. Hise, Steven E. Trumbull
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Patent number: 5674376Abstract: Disclosed is a method for reforming hydrocarbons comprising contacting the hydrocarbons with a catalyst in a reactor system of improved resistance to carburization and metal dusting under conditions of low sulfur.Type: GrantFiled: June 7, 1995Date of Patent: October 7, 1997Assignee: Chevron Chemical CompanyInventors: John V. Heyse, Bernard F. Mulaskey, Robert L. Hise, Steven E. Trumbull
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Patent number: 5620937Abstract: A pretreatment process is disclosed for increasing conversion and reducing the fouling rate of reforming catalysts wherein the catalyst is pretreated at a temperature from 1025.degree. F. to 1275.degree. F. in a reducing atmosphere prior to contacting the catalyst with a hydrocarbon feed in the presence of hydrogen.Type: GrantFiled: December 14, 1994Date of Patent: April 15, 1997Assignee: Chevron Chemical CompanyInventors: Bernard F. Mulaskey, Robert L. Hise, Steven E. Trumbull, William J. Cannella, Robert A. Innes
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Patent number: 5593571Abstract: A method for reforming hydrocarbons comprising coating portions of a reactor system with a material more resistant to carburization, reacting the material with metal oxides existing in the portions of the reactor system prior to coating, fixating or removing at least a portion of the oxide in the metal oxides, and reforming hydrocarbons in the reactor system under conditions of low sulfur.Type: GrantFiled: December 19, 1994Date of Patent: January 14, 1997Assignee: Chevron Chemical CompanyInventors: John V. Heyse, Bernard F. Mulaskey
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Patent number: 5407558Abstract: A method is provided of selecting operating parameters for an aromatization process having at least penultimate and final stages, each containing a respective catalyst, for optimum aromatic barrel per calendar day (AB/CD) production of product having a selected RON and/or over a particular run length. The catalyst lives are determined at constant LHSV for the penultimate and final stage catalysts for a given feed RON to each stage as a function of the change in RON from that of the feed to that of the C.sub.5+ effluent from the respective stage. The penultimate stage C.sub.5+ effluent RON is selected to be such that the lives of the catalysts in each stage are substantially equal. Preferably the yield of C.sub.5+ effluent from each stage and the life of the catalyst used in each stage is determined as a function of the pressure of that stage. The operating pressures of the stages are then selected to be within about 30% of that which gives the highest AB/CD.Type: GrantFiled: July 22, 1991Date of Patent: April 18, 1995Assignee: Chevron Research and Technology CompanyInventors: Jules M. Kline, Stephen J. Miller, Bernard F. Mulaskey
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Patent number: 5406014Abstract: Disclosed are methods for dehydrogenation of alkanes into alkenes in reactor systems of improved resistance to carburization under dehydrogenation conditions. The reactor walls are provided with a carburization and abrasion resistant protective layer by applying a metal plating, cladding or other coatings, such as painting, of a metal, such as Sb, As, Bi, Cu, Cr, Ga, Ge, In, Pb, Se, Te, Sn, particularly tin as a stannide layer, for forming a carburation resistant protective layer to a thickness of about 0.5 to 15 mils, effective to isolate the steel portion from hydrocarbons during the dehydrogenation process while avoiding any substantial liquid metal embrittlement. The protective layer is formed anchored to the steel portion through an intermediate carbide-rich bonding layer.Type: GrantFiled: January 4, 1994Date of Patent: April 11, 1995Assignee: Chevron Research and Technology CompanyInventors: John V. Heyse, Paul G. Johnson, Bernard F. Mulaskey
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Patent number: 5405525Abstract: A method for reforming hydrocarbons comprising coating portions of a reactor system with a material more resistant to carburization, reacting the material with metal sulfides existing in the portions of the reactor system prior to coating, fixating and removing at least a portion of the sulfur in the metal sulfides, and reforming hydrocarbons in the reactor system under conditions of low sulfur.Type: GrantFiled: January 4, 1993Date of Patent: April 11, 1995Assignee: Chevron Research and Technology CompanyInventors: John V. Heyse, Bernard F. Mulaskey
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Patent number: 5382353Abstract: A pretreatment process is disclosed for increasing conversion and reducing the fouling rate of reforming catalysts wherein the catalyst is pretreated at a temperature from 1025.degree. F. to 1275.degree. F. in a reducing atmosphere prior to contacting the catalyst with a hydrocarbon feed in the presence of hydrogen.Type: GrantFiled: November 15, 1993Date of Patent: January 17, 1995Assignee: Chevron Research & Technology Co., a Div. of Chevron U.S.A. Inc.Inventors: Bernard F. Mulaskey, Robert L. Hise, Steven E. Trumbull, William J. Cannella, Robert A. Innes
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Patent number: 5376259Abstract: A naphtha feed is contacted in a penultimate aromatic forming stage under catalytic aromatic forming conditions with a first catalyst. The effluent from the penultimate stage is contacted in a final aromatic forming stage under catalytic aromatic forming conditions and at substantially the same pressure as is maintained in the penultimate stage with a second catalyst. The pressure is selected to provide optimal aromatic production per calendar day from the final stage.Type: GrantFiled: July 22, 1991Date of Patent: December 27, 1994Assignee: Chevron Research and Technology CompanyInventors: Jules M. Kline, Stephen J. Miller, Bernard F. Mulaskey
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Patent number: 5279998Abstract: The exterior of a platinum-zeolite L catalyst is treated with metallic tin particles having an average particle size of between 1 and 5 microns so that at least 95% of the platinum present in the catalyst is unreacted with the tin.Type: GrantFiled: July 17, 1992Date of Patent: January 18, 1994Assignee: Chevron Research and Technology CompanyInventors: Bernard F. Mulaskey, John V. Heyse
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Patent number: 5171691Abstract: A method is provided of selecting operating parameters for a reforming process having at least penultimate and final reforming stages, each containing a respective catalyst, for optimum OB/CD production of product reformate having a selected RON and/or over a particular run length. The catalyst lives are determined at constant LHSV for the penultimate and final stage catalysts for a give feed octane to each stage as a function of the change in RON from that of the feed to that of the C.sub.5 + effluent from the respective stage. The penultimate stage C.sub.5 + effluent RON is selected to be such that the lives of the catalysts in each stage are substantially equal. Preferably the yield of C.sub.5 + effluent from each stage and the life of the catalyst used in each stage is determined as a function of the reforming pressure of that stage. The operating pressures of the stages are then selected to be within about 30% of that which gives the highest OB/CD.Type: GrantFiled: March 2, 1990Date of Patent: December 15, 1992Assignee: Chevron Research and Technology CompanyInventors: Jules M. Kline, Stephen J. Miller, Bernard F. Mulaskey
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Patent number: 5169813Abstract: A process is provided for catalytic reforming or dehydrocyclization of hydrocarbons using a catalyst comprising a noble metal, and an intermediate pore size crystalline silicate having a high silica to alumina ratio and a relatively low alkali content. Preferably, the crystalline silicate is in the form of small crystallite size, such as less than 5 microns. The reforming or dehydrocyclization process is sulfur tolerant so that the reforming can be carried out in the presence of sulfur or with periodic exposure to sulfur.Type: GrantFiled: March 2, 1990Date of Patent: December 8, 1992Assignee: Chevron Research and Technology CompanyInventors: Stephen J. Miller, Bernard F. Mulaskey
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Patent number: RE38532Abstract: Carburization and metal-dusting while hydrodealkylating a hydrodealkylatable hydrocarbon are reduced even in the substantial absence of added sulfur.Type: GrantFiled: December 6, 1999Date of Patent: June 8, 2004Assignee: Chevron Phillips Chemical Company LPInventors: John V. Heyse, Bernard F. Mulaskey, Robert A. Innes, Daniel P. Hagewiesche, William J. Cannella, David C. Kramer