Patents by Inventor Carlos Medina
Carlos Medina 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: 20170315565Abstract: A flowrate control device for a fluid, includes a cartridge body defining a path for the fluid and having an upstream portion for the entry of the fluid, and a downstream portion provided with an outlet opening for the fluid. A shutter element is arranged in the cartridge body for sliding movement between an upstream end of the cartridge body corresponding to a minimum throttling position for the fluid and a downstream end of the cartridge body corresponding to a maximum throttling position for the fluid. The shutter element is provided with a throttling wall arranged downstream for throttling the outlet opening in a controlled manner and an upstream wall cooperating with the upstream portion of the cartridge body for bounding an inlet section for the fluid. A counter spring element exerts a contrasting force on the shutter element suitable for displacing the shutter element towards the upstream end.Type: ApplicationFiled: October 29, 2015Publication date: November 2, 2017Inventor: Carlo MEDINA
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Publication number: 20170260445Abstract: The present invention relates to coated proppants, a method to make said coated proppants, and a method to use such coated proppants in fracturing subterranean formations around oil and gas wells to improve oil recovery. Preferably, said proppants are coated with an oil well treatment agent, specifically, a wax inhibitor and/or a pour point depressant composition.Type: ApplicationFiled: November 18, 2015Publication date: September 14, 2017Applicant: Dow Global Technologies LLCInventors: Stephanie L. Potisek, Kaoru Aou, Juan Carlos Medina
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Patent number: 9738888Abstract: Disclosed is a process for retrieval of nucleotide sequence. The process includes mixing iron chloride tetrahydrate with iron (III) chloride hexahydrate in solution; adding ammonium hydroxide to the mixture and stirring to form maghemite nanoparticles; stirring the maghemite nanoparticles in a solution with an inorganic acid, a surfactant and a monomer precursor of a conducting polymer; initiating polymerization of the monomer by adding the inorganic acid and an oxidizing agent to the stirred solution and further stirring to yield Polyaniline/maghemite nanocomposites; adding the nanocomposites to an first aqueous solution of the nucleotide sequence and stirring so as to electrostatically interact the nanocomposites with the nucleotide sequence; and weakening the electrostatic interaction between the nanocomposite and the nucleotide sequence to recover the nanocomposite independently of the nucleotide sequence.Type: GrantFiled: January 12, 2015Date of Patent: August 22, 2017Inventors: Juan Carlos Medina-Llamas, Alicia Elizabeth Chávez-Guajardo, Cesar Augusto Souza de Andrade, Kleber Goncalves Bezerra Alves, Celso Pinto de Melo
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Patent number: 9710121Abstract: Systems and methods to determine locations for dual touch operations performed on a four-wire resistive touch screen. The systems and methods may include measuring signals from pairs of electrodes on each of a first and second resistive sheet of the resistive touch screen in two phases of operation. The systems and methods may further include determining touch screen segment resistances from the signal measurements. The systems and methods may determine locations corresponding to the dual touch operations from the resistances. The systems and methods may also determine locations from the signal measurements.Type: GrantFiled: November 26, 2014Date of Patent: July 18, 2017Assignee: ANALOG DEVICES, INC.Inventors: Javier Calpe Maravilla, Italo Carlos Medina, Maria Jose Martinez, Alberto Carbajo Galve
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Patent number: 9670223Abstract: A compound having the structural formula (I) and pharmaceutically acceptable salt and/or hydrates thereof, (I) wherein Y is an arylester or an C1-C8 alkylaryl ester, selected from the group consisting of: benzene, toluene, xylene, benzoic acid, benzoate, nicotinate, isonicotinate and halobenzene, which can be unsubstituted or substituted with at least one nitric oxide releasing group; and/or at least one of hydroxide, —Cl, —Br, a C1-C8 alkyl, benzyl, a C1-C8 alkoxy, benzyloxy, —NHC(O)R, —NH2, —NO2, —ONO2, —(CH2)nONO2, —OC(O)[(CH2)m], cyclic ONO2, —OCOArONO2, —OCOAr(CH2)nONO2 or a C1-C5 haloalkyl ester, wherein R is a C1-C8 alkyl or a C1-C8 alkoxy group, n=1-8 and m=3-10, to produce a super-aspirin effect.Type: GrantFiled: April 8, 2015Date of Patent: June 6, 2017Assignee: SOLVOTRIN THERAPEUTICS LTD.Inventors: John Francis Gilmer, Mark Ledwidge, Pat O'Flynn, Shona Harmon, Marek Radomski, Carlos Medina Martin
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Publication number: 20160251570Abstract: Provided are proppants for use in hydraulic fracturing operations. The proppants comprise particles having coatings disposed on them as described herein. The proppants exhibit reduced dust generation, for instance during transloading, conveying and/or offloading of the proppant at a wellsite and/or at intermediate shipping transload points.Type: ApplicationFiled: November 6, 2014Publication date: September 1, 2016Inventors: Bruce D. Hook, Paulo Fabricio Queiroz Martins, Juan Carlos Medina, Daniele Santos, Theodore Tysak, William A. Cynecki, Andrea C. Keenan
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Patent number: 9375450Abstract: A method of stimulating elastin and/or collagen production in the tissues of the vagina, comprising the steps of providing a composition including at least one of a water soluble zinc salt such as zinc sulfate and a peroxisome proliferator-activated receptor beta/delta (PPAR ?/?) agonist, and administering the composition to the tissue of the vagina. Compositions for stimulating 5 elastin and/or collagen production in the tissues of the vagina are also disclosed.Type: GrantFiled: July 10, 2012Date of Patent: June 28, 2016Inventors: Peter Takacs, Keith A. Candiotti, Carlos A. Medina
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Publication number: 20160122582Abstract: A method for exposing a substrate to water under superatmospheric pressure at a temperature of at least 70° C. includes (a) applying a reaction mixture to a substrate, which reaction mixture has an isocyanate index of at least 10 and includes an aromatic polyisocyanate component, a polyol component having a polyol with a hydroxyl equivalent weight of at least 500, and a catalyst component having an isocyanate trimerization catalyst, and at least partially curing the reaction mixture to form a polyisocyanurate or polyurethane-isocyanurate polymer having a glass transition temperature of at least 80° C., and (b) exposing the substrate and the polyisocyanurate or polyurethane-isocyanurate polymer to water under superatmospheric pressure at a temperature of at least 70° C.Type: ApplicationFiled: July 9, 2014Publication date: May 5, 2016Inventors: Kaoru Aou, Juan Carlos Medina, Rajesh P. Paradkar, Dwight Latham, Michelle Tipps-Thomas
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Patent number: 9300318Abstract: A Segmented Voltage Continuous-Time Digital-to-Analog Converter is disclosed which provides the benefits of segmentation while minimizing the associated disadvantages. The segmented digital to analog converter disclosed here features, in particular, inherent monotonicity and low transition glitches. The segmentation technique is based on coupling an array of switchable current sources and at least one current divider into a resistor string, providing, at least, three levels of segmentation.Type: GrantFiled: May 29, 2015Date of Patent: March 29, 2016Assignee: ANALOG DEVICES GLOBALInventor: Italo Carlos Medina Sanchez-Castro
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Publication number: 20160031765Abstract: Embodiments relate to a polyurethane coating film that has improved water barrier properties combined with mechanical strength. According to embodiments, a polyurethane encapsulate includes a polyurethane film that is a reaction product of an aromatic isocyanate and a polyol, and the polyol includes a butylene oxide based polyether polyol in an amount of at least 35 wt % based on a total weight of the polyol. The polyurethane encapsulate further includes a particulate material that is enclosed by the polyurethane film.Type: ApplicationFiled: April 24, 2014Publication date: February 4, 2016Applicant: Dow Global Technologies LLCInventors: Avery L Watkins, Juan Carlos Medina, Dwight D. Latham
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Publication number: 20160002496Abstract: Polyisocyanurate or polyurethane-isocyanurate polymers are made by curing an aromatic polyisocyanate or a mixture of at least one aromatic polyisocyanate and at least one polyol having a hydroxyl equivalent weight of up to 200 in which the isocyanate index is at least 2.00, in the presence of at least one isocyanate trimerization catalyst, to form a polyisocyanurate or polyurethane-isocyanurate polymer having a glass transition temperature of at least 100° C., and then exposing the polyisocyanurate or polyurethane-isocyanurate polymer formed step a) to water under superatmospheric pressure at a temperature of at least 70° C.Type: ApplicationFiled: March 21, 2014Publication date: January 7, 2016Inventors: Kaoru Aou, Juan Carlos Medina, Rajesh P. Paradkar, Dwight D. Latham
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Publication number: 20150322312Abstract: Solid, non-melting polyurethanes having a glass transition temperature of at least 40° C. and free isocyanate groups are self-bonding materials that are useful in a variety of adhesive and molding operations. Under conditions of heat and moisture, these polyurethanes will self-bond. The polyurethanes can be used as adhesive coatings, which are solid and non-tacky and thus can be transported and stored easily under ambient conditions. These polyurethane adhesives are especially useful in applications in which, due to the location and/or orientation of the substrates, liquid or melting materials cannot be applied easily or will run off the substrates.Type: ApplicationFiled: November 23, 2013Publication date: November 12, 2015Inventors: Kaoru Aou, Dwight D. Latham, Juan Carlos Medina
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Publication number: 20150291615Abstract: A compound having the structural formula (I) and pharmaceutically acceptable salt and/or hydrates thereof, (I) wherein Y is an arylester or an C1-C8 alkylaryl ester, selected from the group consisting of: benzene, toluene, xylene, benzoic acid, benzoate, nicotinate, isonicotinate and halobenzene, which can be unsubstituted or substituted with at least one nitric oxide releasing group; and/or at least one of hydroxide, —Cl, —Br, a C1-C8 alkyl, benzyl, a C1-C8 alkoxy, benzyloxy, —NHC(O)R, —NH2, —NO2, —ONO2, —(CH2)n ONO2, —OC(O)[(CH2)m], cyclic ONO2, —OCOArONO2, —OCOAr(CH2)n ONO2 or a C1-C5 haloalkyl ester, wherein R is a C1-C8 alkyl or a C1-C8 alkoxy group, n=1-8 and m=3-10, to produce a super-aspirin effect.Type: ApplicationFiled: April 8, 2015Publication date: October 15, 2015Inventors: John Francis Gilmer, Mark Ledwidge, Pat O'Flynn, Shona Harmon, Marek Radomski, Carlos Medina Martin
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Publication number: 20150132758Abstract: Disclosed is a process for retrieval of nucleotide sequence. The process includes mixing iron chloride tetrahydrate with iron (III) chloride hexahydrate in solution; adding ammonium hydroxide to the mixture and stirring to form maghemite nanoparticles; stirring the maghemite nanoparticles in a solution with an inorganic acid, a surfactant and a monomer precursor of a conducting polymer; initiating polymerization of the monomer by adding the inorganic acid and an oxidizing agent to the stirred solution and further stirring to yield Polyaniline/maghemite nanocomposites; adding the nanocomposites to an first aqueous solution of the nucleotide sequence and stirring so as to electrostatically interact the nanocomposites with the nucleotide sequence; and weakening the electrostatic interaction between the nanocomposite and the nucleotide sequence to recover the nanocomposite independently of the nucleotide sequence.Type: ApplicationFiled: January 12, 2015Publication date: May 14, 2015Inventors: Juan Carlos Medina-Llamas, Alicia Elizabeth Chávez-Guajardo, Cesar Augusto Souza de Andrade, Kleber Goncalves Bezerra Alves, Celso Pinto de Melo
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Patent number: 9018334Abstract: Embodiments of the invention provide for a polycarbonate polyol including the reaction product of at least one polyol composition and a carbonate. The polycarbonate is one of an amorphous liquid and an amorphous solid at room temperature. The polyol composition includes at least one of a mixture of 1,3-cyclohexanedimethanol and 1,4-cyclohexanedimethanol in a weight ratio from about 60:40 to about 5:95 and a polyol derived from a natural oil fatty acid or natural oil fatty acid methyl ester.Type: GrantFiled: March 15, 2011Date of Patent: April 28, 2015Assignee: Dow Global Technologies LLCInventors: Steven Montgomery, Shawn Brown, Mark F. Sonnenschein, Paul Foley, Phillip S. Athey, Juan Carlos Medina, John N. Argyropoulos, Benjamin L. Wendt, Cecile Boyer
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Patent number: 9006385Abstract: Thermoset elastomer compositions are disclosed. Such elastomers are the reaction product of (a) an ambient temperature liquid epoxy-terminated prepolymer formed by reacting a polyoxyalkyleneamine having a molecular weight of from 3000 to 20,000 with an excess of epoxide, wherein the polyoxyalkyleneamine has at least 3 active hydrogen atoms and (b) a curing agent comprising at least one amine or polyamine having an equivalent weight of less than 200 and having 2 to 5 active hydrogen atoms. Such elastomers can be used in applications such as for sealants, adhesives, coatings, gaskets, jointing and cast elastomers.Type: GrantFiled: August 31, 2011Date of Patent: April 14, 2015Assignee: Dow Global Technologies LLCInventors: Nathan Wilmot, Rajat Duggal, Juan Carlos Medina, Harshad M. Shah, Alan K. Schrock
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Publication number: 20150084924Abstract: Systems and methods to determine locations for dual touch operations performed on a four-wire resistive touch screen. The systems and methods may include measuring signals from pairs of electrodes on each of a first and second resistive sheet of the resistive touch screen in two phases of operation. The systems and methods may further include determining touch screen segment resistances from the signal measurements. The systems and methods may determine locations corresponding to the dual touch operations from the resistances. The systems and methods may also determine locations from the signal measurements.Type: ApplicationFiled: November 26, 2014Publication date: March 26, 2015Applicant: ANALOG DEVICES, INC.Inventors: Javier CALPE MARAVILLA, Italo Carlos MEDINA, Maria Jose MARTINEZ, Alberto CARBAJO GALVE
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Patent number: 8951619Abstract: The invention provides an insulation material comprising an epoxy-terminated prepolymer and an amine curing agent. The reaction production of the epoxy-terminated prepolymer and amine curing agent provides for an elastomer that combines the processing and mechanical properties of polyurethane elastomers with improved thermal-hydrolytic stability. The insulation material is particularly useful as thermal insulation and coating for subsea oil and gas applications.Type: GrantFiled: August 31, 2011Date of Patent: February 10, 2015Assignee: Dow Global Technologies LLCInventors: Nathan Wilmot, Rajat Duggal, Harshad M. Shah, Alan K. Schrock, Juan Carlos Medina
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Patent number: 8941522Abstract: A digital input to a digital-to-analog converter (DAC) is divided into a most significant portion and a lesser significant portion. At least one tap voltage generator generates a plurality of voltages, preferably using a resistor string. A decoder decodes at least one sub-word that forms the lesser significant portion to generate a corresponding at least one control signal. A switching unit accesses voltages generated by the at least one tap voltage generator in response to the at least one control signal. A scaled current generator generates a respective weighted current from each accessed voltage. An output stage combines all the weighted currents with a voltage that is an analog representation of the most significant portion of the digital input to generate an analog approximation of the entire digital input.Type: GrantFiled: January 23, 2013Date of Patent: January 27, 2015Assignee: Analog Devices TechnologyInventor: Italo Carlos Medina Sánchez-Castro
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Publication number: 20150011722Abstract: Embodiments of the invention provide for methods of producing a composition comprising a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule. The method comprises providing a polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule, adding to the polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction to form a composition comprising hydrosilylated polyoxyalkylene polymers, reacting the hydrosilylated polyoxyalkylene polymers with at least one isocyanate in the presence of a first tin-free catalyst to form an isocyanate reacted hydrosilylated polymer, and optionally reacting the isocyanate reacted hydrosilylated polymer with a polyol having a nominal functionality of at least 2 to form a polyol reacted crosslinkable silane-terminated polymer.Type: ApplicationFiled: September 25, 2014Publication date: January 8, 2015Inventors: Kamesh R. Vyakaranam, Ling Zhang, William A. Koonce, Juan Carlos Medina, Ganesh Kailasam, Rajat Duggal, Nathan Wilmot