Patents by Inventor Cristina Martinez
Cristina Martinez 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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Publication number: 20150301555Abstract: Method for generating piecewise-affine multivariate functions, wherein the online computation of the search tree is performed in order to locate the input value in the polytopes of the partition, and the subsequent generation of the corresponding affine function. It also proposes a configurable and programmable device for generating piecewise-affine multivariate functions composed of an architecture with four functional blocks namely: a control unit block (1), a tree memory block, a parameter memory block and an arithmetic unit block; and it has at least three operating modes which can be selected using different values of a bus (config): writing of the tree memory, writing of the parameter memory and evaluating the affine function. It may include a fourth operating mode, which is the test mode.Type: ApplicationFiled: June 4, 2013Publication date: October 22, 2015Applicants: UNIVERSIDAD DE SEVILLA, CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICASInventors: Antonio Jose Acosta Jimenez, Iluminada Baturone Castillo, Javier Castro Ramirez, Carlos Jesus Jimenez Fernandez, Piedad Brox Jimenez, Macarena Cristina Martinez Rodriguez
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Patent number: 9120090Abstract: A modified zeolite catalyst derived from a zeolite of a structural type which consists of a one-dimensional micropore structure of channels made from rings containing between 8 and 12 silicon/aluminum atoms is disclosed. It consists substantially of a plurality of crystallites having additional mesoporosity whose volume is in the range 0.09 to 0.25 cc/g as mentioned by nitrogen adsorption at 77° K and calculated by the BJH method. The mesoporosity may be introduced into the crystallites by e.g. treatment with aqueous sodium hydroxide at a pH at 25° C. in excess of 8 for an extended period at elevated temperature. The catalyst shows improved resistance to catalyst deactivation and greater selectivity to higher hydrocarbons when used to e.g. oligomerize light alkenes e.g. propene or the butenes.Type: GrantFiled: June 22, 2010Date of Patent: September 1, 2015Assignees: BP Oil International Limited, BP Corporation North America Inc.Inventors: Avelino Corma, Cristina Martinez, Eric J. Doskocil, George Yaluris
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Publication number: 20150197463Abstract: The invention relates to a heterogeneous method for oligomerising alkenes in order to produce hydricarbons within a diesel fraction in the present of a catalyst based on the ITQ-39 zeolite. The oligomerisation method described in the present invention includes at least: a. feeding a catalyst containing at least the ITQ-39 zeolitic material into the reactor; b. supplying the reactor with a stream that includes at least one olefinic compound; and c. enabling the catalyst containing at least the ITQ-39 material and the organic compound to remain in contact during the time required for the reaction to take place.Type: ApplicationFiled: January 19, 2015Publication date: July 16, 2015Inventors: Avelino CORMA CANÓS, Cristina MARTÍNEZ SÁNCHEZ
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Publication number: 20150184083Abstract: The present invention relates to a method in the absence of hydrogen for the catalytic cracking of organic compounds using a zeolitic material, modified Y zeolite. In said cracking method, the modified zeolitic material can be the sole zeolitic component or can be combined with at least one second zeolitic component. The catalytic cracking method of the invention comprises at least the following steps: a) introducing at least one first zeolitic material, modified zeolite, into a reactor; b) supplying the reactor with at least one organic compound; c) leaving the modified zeolite and the organic compound in contact with another for the time necessary for the reaction to occur.Type: ApplicationFiled: December 29, 2014Publication date: July 2, 2015Inventors: Avelino CORMA CANÓS, Cristina MARTÍNEZ SÁNCHEZ
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Patent number: 8901364Abstract: Disclosed is a process for producing a hydrocarbon fraction rich in components boiling in the range typical for diesel fuel comprising contacting a feedstock comprising one or more C2 to C10 alkenes with a modified zeolite catalyst having a one-dimensional micropore structure consisting of channels made from rings containing between 8 and 12 silicon/aluminum atoms at a temperature in the range 100 to 500° C. and pressure in the range 0.1 to 200 bar characterized in that the modified zeolite catalyst is one which has been prepared by treating a corresponding zeolite precursor with an alkaline solution. The alkaline solution used to treat the zeolite precursor can be for example aqueous sodium hydroxide solution. Relative to equivalent untreated zeolites the modified zeolite catalysts described show improved catalyst life and selectivity to hydrocarbons boiling in the range 250 to 350° C.Type: GrantFiled: June 22, 2010Date of Patent: December 2, 2014Assignee: BP Corporation North America Inc.Inventors: Avelino Corma, Cristina Martinez, Eric J. Doskocil, George Yaluris
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Patent number: 8901363Abstract: Disclosed is a process for producing a hydrocarbon fraction rich in components boiling in the range typical for diesel fuel comprising contacting a feedstock comprising one or more C2 to C10 alkenes with a zeolite catalyst having partially neutralised acidity and a one-dimensional or two dimensional micropore structure consisting of channels made from rings containing between 10 and 12 silicon/aluminium atoms at a temperature in the range 373 to 773 K and pressure in the range 0.1 to 200 bar characterised in that the partially neutralized zeolite catalyst contains both protons and basic cations. The basic cations are preferably selected from the group comprising Group IA and IIA cations (preferably sodium, potassium, caesium or mixtures thereof). Relative to their equivalent fully protonic forms the partially neutralized zeolite catalysts described show improved catalyst life and selectivity to hydrocarbons.Type: GrantFiled: May 5, 2011Date of Patent: December 2, 2014Assignee: BP Corporation North America Inc.Inventors: Avelino Corma, Cristina Martinez, Eric J. Doskocil, George Yaluris
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Publication number: 20120178615Abstract: A modified zeolite catalyst derived from a zeolite of a structural type which consists of a one-dimensional micropore structure of channels made from rings containing between 8 and 12 silicon/aluminium atoms is disclosed. It consists substantially of a plurality of crystallites having additional mesoporosity whose volume is in the range 0.09 to 0.25 ml3g?1 as measured by nitrogen absorption at 77° K and calculated by the BJH method. The mesoporosity may be introduced into the crystallites by e.g. treatment with aqueous sodium hydroxide at a pH at 25° C. in excess of 8 for an extended period at elevated temperature. The catalyst shows improved resistance to catalyst deactivation and greater selectivity to higher hydrocarbons when used to e.g. oligomerize light alkenes e.g. propene or the butenes.Type: ApplicationFiled: June 22, 2010Publication date: July 12, 2012Applicant: BP Corporation North America, Inc.Inventors: Avelino Corma, Cristina Martinez, Eric J. Doskocil, George Yaluris
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Publication number: 20120178981Abstract: Disclosed is a process for producing a hydrocarbon fraction rich in components boiling in the range typical for diesel fuel comprising contacting a feedstock comprising one or more C2 to C10 alkenes with a modified zeolite catalyst having a one-dimensional micropore structure consisting of channels made from rings containing between 8 and 12 silicon/aluminium atoms at a temperature in the range 100 to 500° C. and pressure in the range 0.1 to 200 bar characterised in that the modified zeolite catalyst is one which has been prepared by treating a corresponding zeolite precursor with an alkaline solution. The alkaline solution used to treat the zeolite precursor can be for example aqueous sodium hydroxide solution. Relative to equivalent untreated zeolites the modified zeolite catalysts described show improved catalyst life and selectivity to hydrocarbons boiling in the range 250 to 350° C.Type: ApplicationFiled: June 22, 2010Publication date: July 12, 2012Applicants: BP CORPORATION NORTH AMERICA INC, BP OIL INTERNATIONAL LIMITEDInventors: Avelino Corma, Cristina Martinez, Eric J. Doskocil, George Yaluris
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Publication number: 20110282123Abstract: Disclosed is a process for producing a hydrocarbon fraction rich in components boiling in the range typical for diesel fuel comprising contacting a feedstock comprising one or more C2 to C10 alkenes with a zeolite catalyst having partially neutralised acidity and a one-dimensional or two dimensional micropore structure consisting of channels made from rings containing between 10 and 12 silicon/aluminium atoms at a temperature in the range 373 to 773 K and pressure in the range 0.1 to 200 bar characterised in that the partially neutralized zeolite catalyst contains both protons and basic cations. The basic cations are preferably selected from the group comprising Group IA and IIA cations (preferably sodium, potassium, caesium or mixtures thereof).Type: ApplicationFiled: May 5, 2011Publication date: November 17, 2011Applicants: BP Corporation North America Inc., BP Oil International LimitedInventors: Avelino Corma, Cristina Martinez, Eric J. Doskocil, George Yaluris
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Patent number: 7477506Abstract: The invention relates to an electrical substation. The inventive substation is characterised in that it consists of a special ring-type electrical configuration, known as a network ring, comprising SF6-insulated armoured modules M by way of a high-voltage switchgear. According to the invention, the modules are disposed such as to form longitudinally-linked squares, with a segregated phase arrangement. Owing to the ring configuration A, the use of armoured modules M and the segregated phase arrangement, it is possible to produce standardised base elements which are tested before being moved to the site of the substation in order to be connected to other elements and/or existing equipment with the same configuration or another standard configuration. In this way, a substation can be mounted and enlarged without the need for discharges or service interruptions and with a minimum loss of time in terms of mounting, repair and enlarging operations.Type: GrantFiled: December 2, 2005Date of Patent: January 13, 2009Assignee: Red Electrica De Espana, S.A.Inventors: Francisco José Salamanca Segoviano, Cristina Martínez Vidal
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Patent number: 7371318Abstract: The invention relates to a process for the elimination of sulphur compounds from the diesel fraction, which is characterized in that an oxidising reaction of said sulphur compound is carried out by using at least an organic-inorganic composite as catalyst, said composite comprising Si, Ti; and silicon bonded to carbon, and organic and inorganic hydroperoxides as oxidizing agents. According to the inventive process, said organic-inorganic composite can be obtained by a method comprising a post-synthesis silylation step.Type: GrantFiled: October 10, 2003Date of Patent: May 13, 2008Assignees: Consejo Superior De Investigaciones Cientificas, Universidad Politecnica De ValenciaInventors: Avelino Corma Canós, Marcelo Eduardo Domine, Cristina Martinez Sánchez
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Publication number: 20060187598Abstract: The invention relates to an electrical substation. The inventive substation is characterised in that it consists of a special ring-type electrical configuration, known as a network ring, comprising SF6-insulated armoured modules M by way of a high-voltage switchgear. According to the invention, the modules are disposed such as to form longitudinally-linked squares, with a segregated phase arrangement. Owing to the ring configuration A, the use of armoured modules M and the segregated phase arrangement, it is possible to produce standardised base elements which are tested before being moved to the site of the substation in order to be connected to other elements and/or existing equipment with the same configuration or another standard configuration. In this way, a substation can be mounted and enlarged without the need for discharges or service interruptions and with a minimum loss of time in terms of mounting, repair and enlarging operations.Type: ApplicationFiled: December 2, 2005Publication date: August 24, 2006Inventors: Francisco Jose Salamanca Segoviano, Cristina Martinez Vidal
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Patent number: 6846406Abstract: The object of the present invention is a process for the elimination of sulphur compounds from the gasoline fraction, characterized in that it comprises carrying out an oxidation reaction of said sulphur compounds using at least one organic-inorganic composite as a catalyst which comprises at least: Si, Ti and silicon linked to carbon and using organic or inorganic hydro-peroxides as oxidating agents. According to the process for the present invention, said organic or inorganic composite is obtained by means of a process that comprises a sililation stage during synthesis or by means of a process that comprises a post-synthesis sililation stage.Type: GrantFiled: April 11, 2003Date of Patent: January 25, 2005Assignees: Consejo Superior de Investigaciones Cientificas, Universidad Politecnica de ValenciaInventors: Avelino Corma Canós, Marcelo Eduardo Domine, Cristina Martinez Sánchez
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Publication number: 20040140247Abstract: The invention relates to a process for the elimination of sulphur compounds from the diesel fraction, which is characterized in that an oxidising reaction of said sulphur compound is carried out by using at least an organic-inorganic composite as catalyst, said composite comprising Si, Ti; and silicon bonded to carbon, and organic and inorganic hydroperoxides as oxidizing agents. According to the inventive process, said organic-inorganic composite can be obtained by a method comprising a post-synthesis silylation step.Type: ApplicationFiled: October 10, 2003Publication date: July 22, 2004Inventors: Avelino Corma Canos, Marcelo Eduardo Domine, Cristina Martinez Sanchez
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Publication number: 20030183555Abstract: The object of the present invention is a process for the elimination of sulphur compounds from the gasoline fraction, characterized in that it comprises carrying out an oxidation reaction of said sulphur compounds using at least one organic-inorganic composite as a catalyst which comprises at least:Type: ApplicationFiled: April 11, 2003Publication date: October 2, 2003Inventors: Avelino Corma Canos, Marcelo Eduardo Domine, Cristina Martinez Sanchez