Patents by Inventor Juan Lujano
Juan Lujano 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: 8828338Abstract: A material with cationic exchanger properties is introduced into aqueous media, where the equilibriums of carbon dioxide dissolution take place. A cationic exchanger material x/nM+nEx? is used to capture hydronium cations (H3O+) according to: x/nM+nEx?(s)+xH3O+(aq)=xH3O+Ex?(s)+x/nM+n(aq) where “x” stands for molar amount of the anionic centers of charge of the cationic exchanger material Ex? balanced by x/n molar amount of metal M, “n” stands for the metal valence, and M is selected from the group consisting of 1A and/or 2A of the periodic table of elements. This capture of the hydronium cations, H3O+, shifts certain reaction equilibriums to the right, according to Le Chatelier's principle, producing more bicarbonate, HCO3?, and/or carbonate, CO3=, than would otherwise be obtained.Type: GrantFiled: July 25, 2011Date of Patent: September 9, 2014Assignee: Silica de Panama S.A.Inventors: Juan Lujano, Javier Revete, Norma Valencia, Luis Rivas, Nelson Socorro
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Publication number: 20130028828Abstract: A material with cationic exchanger properties is introduced into aqueous media, where the equilibriums of carbon dioxide dissolution take place. A cationic exchanger material x/nM+nEx? is used to capture hydronium cations (H3O+) according to: x/nM+nEx?(s)+xH3O+(aq)=xH3O+Ex?(s)+x/nM+n(aq) where “x” stands for molar amount of the anionic centers of charge of the cationic exchanger material Ex? balanced by x/n molar amount of metal M, “n” stands for the metal valence, and M is selected from the group consisting of 1A and/or 2A of the periodic table of elements. This capture of the hydronium cations, H3O+, shifts certain reaction equilibriums to the right, according to Le Chatelier's principle, producing more bicarbonate, HCO3?, and/or carbonate, CO3=, than would otherwise be obtained.Type: ApplicationFiled: July 25, 2011Publication date: January 31, 2013Applicant: Silica de Panama S.A.Inventors: Juan Lujano, Javier Revete, Norma Valencia, Luis Rivas, Nelson Socorro
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Patent number: 6485702Abstract: A composition of matter is provided including an inorganic porous material having wall portions defining mesopore-sized channels having a mean diameter of between about 15 Å and about 100 Å and a narrow diameter distribution of less than or equal to about 30 Å, the material having a void volume from the mesopore-sized channels of at least about 0.1 cc/g and a surface area of at least about 500 m2/g and having a number of hydroxyl groups of at least about 1.5 mmol of hydroxyl groups per gram of material, and exhibiting thermal and hydrothermal stability at temperatures up to about 500° C. Catalytic materials incorporating aluminum and other active metals, as well as a process for preparing the composition, are also disclosed.Type: GrantFiled: May 9, 2000Date of Patent: November 26, 2002Assignee: Intevep, S.A.Inventors: Juan Lujano, Jose Carrazza, Norma Valencia de Zapata
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Patent number: 6299855Abstract: A composition of matter is provided including an inorganic porous material having wall portions defining mesopore-sized channels having a mean diameter of between about 15 Å and about 100 Å and a narrow diameter distribution of less than or equal to about 30 Å, the material having a void volume from the mesopore-sized channels of at least about 0.1 cc/g and a surface area of at least about 500 m2/g and having a number of hydroxyl groups of at least about 1.5 mmol of hydroxyl groups per gram of material, and exhibiting thermal and hydrothermal stability at temperatures up to about 500° C. Catalytic materials incorporating aluminum and other active metals, as well as a process for preparing the composition, are also disclosed.Type: GrantFiled: July 29, 1999Date of Patent: October 9, 2001Assignee: Intevep, S.A.Inventors: Juan Lujano, Jose Carrazza, Norma Valencia de Zapata
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Patent number: 6106802Abstract: A composition of matter is provided including an inorganic porous material having wall portions defining mesopore-sized channels having a mean diameter of between about 15 .ANG. and about 100 .ANG. and a narrow diameter distribution of less than or equal to about 30 .ANG., the material having a void volume from the mesopore-sized channels of at least about 0.1 cc/g and a surface area of at least about 500 m.sup.2 /g and having a number of hydroxyl groups of at least about 1.5 mmol of hydroxyl groups per gram of material, and exhibiting thermal and hydrothermal stability at temperatures up to about 500.degree. C. Catalytic materials incorporating aluminum and other active metals, as well as a process for preparing the composition, are also disclosed.Type: GrantFiled: February 17, 1998Date of Patent: August 22, 2000Assignee: Intevep, S.A.Inventors: Juan Lujano, Jose Carrazza, Norma Valencia de Zapata
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Patent number: 5952257Abstract: The present invention relates to a zeolite catalyst, a process for using the catalyst for conversion of hydrocarbons, especially naphtha and LPG feedstock, and a process for preparing the catalyst.Type: GrantFiled: April 7, 1998Date of Patent: September 14, 1999Assignee: Intevep, S.A.Inventors: Jorge Tejada, Juan Lujano, Yilda Romero
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Patent number: 5902564Abstract: The invention relates to a synthetic crystalline material and its use in catalytic conversion of organic compounds and as a sorbent. The crystalline material contains one or more microporous crystalline phases, having a micropore volume greater than or equal to about 0.15 cc/g distributed in channels between about 3 to about 15 .ANG. in average diameter which is rendered accessible by a mesopore volume of greater than or equal to about 0.1 cc/g distributed in channels between about 20 to about 100 .ANG. in average diameter. A process is also provided for preparing the crystalline material of the present invention.Type: GrantFiled: October 26, 1998Date of Patent: May 11, 1999Assignee: Intevep, S.A.Inventors: Juan Lujano, Yilda Romero, Jose Carrazza
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Patent number: 5849258Abstract: The invention relates to a synthetic crystalline material and its use in catalytic conversion of organic compounds and as a sorbent. The crystalline material contains one or more microporous crystalline phases, having a micropore volume greater than or equal to about 0.15 cc/g distributed in channels between about 3 to about 15 .ANG. in average diameter which is rendered accessible by a mesopore volume of greater than or equal to about 0.1 cc/g distributed in channels between about 20 to about 100 .ANG. in average diameter. A process is also provided for preparing the crystalline material of the present invention.Type: GrantFiled: June 6, 1996Date of Patent: December 15, 1998Assignee: Intevep, S.A.Inventors: Juan Lujano, Yilda Romero, Jose Carrazza
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Patent number: 5840271Abstract: A process for preparing an inorganic porous material, includes the steps of forming a solution of a hydrolyzable inorganic compound with a non-ionic surfactant having organic molecules; inducing growth and condensation of a solid composition comprising an inorganic composition in intimate contact with said organic molecules; and extracting said organic molecules from said inorganic composition so as to provide said inorganic porous material having wall portions defining mesopore-sized channels having a mean diameter of between about 15 .ANG. to about 100 .ANG. and a narrow diameter distribution of less than or equal to about 30 .ANG., said material having a void volume from said mesopore-sized channels of at least about 0.1 cc/g.Type: GrantFiled: January 31, 1997Date of Patent: November 24, 1998Assignee: Intevep, S.A.Inventors: Jose Carrazza, Jose Rafael Cordova, Juan Lujano, Jose Manuel Cruz
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Patent number: 5800801Abstract: The present invention relates to a zeolite catalyst, a process for using the catalyst for conversion of hydrocarbons, especially naphtha and LPG feedstock, and a process for preparing the catalyst.Type: GrantFiled: January 5, 1996Date of Patent: September 1, 1998Assignee: Intevep, S.A.Inventors: Jorge Tejada, Juan Lujano, Yilda Romero
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Patent number: 5770040Abstract: The present invention relates to a zeolite catalyst, a process for using the catalyst for conversion of hydrocarbons, especially naphtha and LPG feedstock, and a process for preparing the catalyst.Type: GrantFiled: January 5, 1996Date of Patent: June 23, 1998Assignee: Intevep, S.A.Inventors: Jorge Tejada, Juan Lujano, Yilda Romero
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Patent number: 5628978Abstract: The present invention relates to a zeolite catalyst, a process for using the catalyst for conversion of hydrocarbons, especially naphtha and LPG feedstock, and a process for preparing the catalyst.Type: GrantFiled: December 23, 1994Date of Patent: May 13, 1997Assignee: Intevep, S.A.Inventors: Jorge Tejada, Juan Lujano, Yilda Romero
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Patent number: 5401384Abstract: An antimony and tin containing compound for passivating contaminant metals to which a catalyst is exposed during fluid catalytic cracking of hydrocarbons containing said contaminant metals, said compound having a composition as follows (R*).sub.x Sb(OSn(R**).sub.3).sub.n wherein R* and R** are aryl compounds having between 6 to 13 carbon atoms, wherein n=1, 2 or 3 and x=4 when n=1, x=3 when n=2, and x=0 when n=3.Type: GrantFiled: December 17, 1993Date of Patent: March 28, 1995Assignees: Inteven, S.A., Universidad Simon BolivarInventors: Nelson Martinez, Juan Lujano, Nieves Alvarez, Jacek Lubinkowski, William McEwen
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Patent number: 5360774Abstract: A zeolitic material with a crystalline structure of MFI type has a ratio of silica to alumina which is lower than 26, and is hydrothermally prepared without organic template reagents or seeding procedures. Crystalline structure is obtained by forming a mixture of a silicon dioxide source, an alkali metal hydroxide, an aluminum source and water, all reactants with the following molar ratios: ##EQU1## where M is an alkali metal, and reacting the mixture at a temperature from 160.degree. to 180.degree. C. for 40-80 hours. The material is characterized by X-ray diffraction, and has good cracking activity and improved selectivity for gasoline octanes.Type: GrantFiled: August 9, 1993Date of Patent: November 1, 1994Assignee: Intevep, S.A.Inventors: Nelson P. Martinez, Juan A. Lujano, Nieves Alvarez, Francisco Machado, Carmen M. Lopez
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Patent number: 5254327Abstract: A zeolitic material with a crystalline structure of MFI type has a ratio of silica to alumina which is lower than 26, and is hydrothermally prepared without organic template reagents or seeding procedures. Crystalline structure is obtained by forming a mixture of a silicon dioxide source, an alkali metal hydroxide, an aluminum source and water, all reactants with the following molar ratios: ##EQU1## where M is an alkali metal, and reacting the mixture at a temperature from 160.degree. to 180.degree. C. for 40-80 hours. The material is characterized by X-ray diffraction, and has good cracking activity and improved selectivity for gasoline octanes.Type: GrantFiled: April 3, 1992Date of Patent: October 19, 1993Assignee: Intevep, S.A.Inventors: Nelson P. Martinez, Juan A. Lujano, Nieves Alvarez, Francisco Machado, Carmen M. Lopez
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Patent number: 4894354Abstract: A method for making a catalyst containing a vanadium passivating agent in the form of anatase crystalline TiO.sub.2 including a method for processing hydrocarbon feeds containing vanadium.Type: GrantFiled: October 28, 1988Date of Patent: January 16, 1990Assignee: Intevep, S.A.Inventors: Nelson P. Martinez, Jose R. Velasquez, Juan A. Lujano
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Patent number: 4857494Abstract: A catalyst comprises an alumina carrier having a surface concentration as measured by X-Ray Photoelectronic Spectroscopy (XPS) to give values of the Group VIB metal Xs/(A1+X)s of between 4 to 15 where X equals the Group VIB metal and a bulk concentration of between 2.0 to 15.0 wt. % of said Group VIB metal, a surface concentration as measured by X-Ray Photoelectronic Spectroscopy (XPS) to give values of the Group VIII metal Ys/(A1+Y)s of between 2 to 5 where Y equals the Group VIII metal and a bulk concentration of between 1.0 to 4 wt. % of said Group VIII metal, a surface concentration as measured by X-Ray Photoelectronic Spectroscopy (XPS) to give values of phosphorus Ps/(A1+P)s of between 0.1 to 8 and a bulk concentration of between 0.4 to 2 wt. % phosphorus and a surface concentration as measured by X-Ray Photoelectronic Spectroscpy (XPS) to give values of silica SiO.sub.2 /(A1+SiO.sub.2) of between 1 to 10 and a bulk concentration of between 0.1 to 5 wt.Type: GrantFiled: October 19, 1987Date of Patent: August 15, 1989Assignee: Intevep, S.A.Inventors: Nelson P. Martinez, Roberto E. Galiasso, Jose R. Velasquez, Juan Lujano, Carlos Zerpa
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Patent number: 4816135Abstract: A method for making a catalyst containing a vanadium passivating agent in the form of anatase crystalline TiO.sub.2 including a method for processing hydrocarbon feeds containing vanadium.Type: GrantFiled: October 19, 1987Date of Patent: March 28, 1989Assignee: Intevep, S.A.Inventors: Nelson P. Martinez, Jose R. Velasquez, Juan A. Lujano
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Patent number: 4704375Abstract: A catalyst containing a vanadium passivating agent in the form of anatase crystalline TiO.sub.2.Type: GrantFiled: May 19, 1986Date of Patent: November 3, 1987Assignee: Intevep, S.A.Inventors: Nelson P. Martinez, Jose R. Valasquez, Juan A. Lujano
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Patent number: 4689314Abstract: A catalyst having a surface concentration as measured by X-Ray Photoelectronic Spectroscopy (XPS) gives values of the Group VIB metal Xs/(Al+X)s of between 4 to 15 where X equals the Group VIB metal and a bulk concentration of between 2.0 to 15.0 wt. % of said Group VIB metal, a surface concentration as measured by X-Ray Photoelectronic Spectroscopy (XPS) gives values of the Group VIII metal Ys/(Al+Y)s of between 2 to 5 where Y equals the Group VIII metal and a bulk concentration of between 1.0 to 4 wt. % of said Group VIII metal, a surface concentration as measured by X-Ray Photoelectronic Spectroscopy (XPS) gives values of phosphorus Ps/(Al+P)s of between 0.1 to 8 and a bulk concentration of between 0.4 to 2 wt. % phosphorus and a surface concentration as measured by X-Ray Photoelectronic Spectroscopy (XPS) gives values of silica SiO.sub.2 /(Al+SiO.sub.2) of between 1 to 10 and a bulk concentration of between 0.1 to 5 wt. % silica and method for preparation of same.Type: GrantFiled: May 5, 1986Date of Patent: August 25, 1987Assignee: Intevep, S.A.Inventors: Nelson P. Martinez, Roberto E. Galiasso, Jose R. Velasquez, Juan Lujano, Carlos Zerpa