Patents by Inventor Carlos A. Medina

Carlos A. 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).

  • Publication number: 20150132758
    Abstract: 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: Application
    Filed: January 12, 2015
    Publication date: May 14, 2015
    Inventors: Juan Carlos Medina-Llamas, Alicia Elizabeth Chávez-Guajardo, Cesar Augusto Souza de Andrade, Kleber Goncalves Bezerra Alves, Celso Pinto de Melo
  • Patent number: 9018334
    Abstract: 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: Grant
    Filed: March 15, 2011
    Date of Patent: April 28, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Steven Montgomery, Shawn Brown, Mark F. Sonnenschein, Paul Foley, Phillip S. Athey, Juan Carlos Medina, John N. Argyropoulos, Benjamin L. Wendt, Cecile Boyer
  • Patent number: 9006385
    Abstract: 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: Grant
    Filed: August 31, 2011
    Date of Patent: April 14, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Nathan Wilmot, Rajat Duggal, Juan Carlos Medina, Harshad M. Shah, Alan K. Schrock
  • Publication number: 20150084924
    Abstract: 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: Application
    Filed: November 26, 2014
    Publication date: March 26, 2015
    Applicant: ANALOG DEVICES, INC.
    Inventors: Javier CALPE MARAVILLA, Italo Carlos MEDINA, Maria Jose MARTINEZ, Alberto CARBAJO GALVE
  • Patent number: 8951619
    Abstract: 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: Grant
    Filed: August 31, 2011
    Date of Patent: February 10, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Nathan Wilmot, Rajat Duggal, Harshad M. Shah, Alan K. Schrock, Juan Carlos Medina
  • Patent number: 8941522
    Abstract: 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: Grant
    Filed: January 23, 2013
    Date of Patent: January 27, 2015
    Assignee: Analog Devices Technology
    Inventor: Italo Carlos Medina Sánchez-Castro
  • Publication number: 20150011722
    Abstract: 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: Application
    Filed: September 25, 2014
    Publication date: January 8, 2015
    Inventors: Kamesh R. Vyakaranam, Ling Zhang, William A. Koonce, Juan Carlos Medina, Ganesh Kailasam, Rajat Duggal, Nathan Wilmot
  • Patent number: 8877885
    Abstract: 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: Grant
    Filed: June 29, 2011
    Date of Patent: November 4, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Kamesh R. Vyakaranam, Ling Zhang, William A. Koonce, Juan Carlos Medina, Ganesh Kailasam, Rajat Duggal, Nathan Wilmot
  • Publication number: 20140220155
    Abstract: 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 13/8) 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: Application
    Filed: July 10, 2012
    Publication date: August 7, 2014
    Applicant: UNIVERSITY OF MIAMI
    Inventors: Peter Takacs, Keith A. Candiotti, Carlos A. Medina
  • Publication number: 20140024681
    Abstract: 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)n]cyclicONO2, —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: Application
    Filed: January 20, 2012
    Publication date: January 23, 2014
    Applicants: The Provost,Fellowws, Foudation Scholars, and the Other Members of Board, of the College of the Holy, Solvotrin Therapeutics Ltd
    Inventors: John Francis Gilmer, Mark Ledwidge, Pat O'lynn, Shona Harmon, Mark Radomski, Carlos Medina Martin
  • Publication number: 20130291992
    Abstract: 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: Application
    Filed: August 31, 2011
    Publication date: November 7, 2013
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Nathan Wilmot, Rajat Duggal, Harshad M. Shah, Alan K. Schrock, Juan Carlos Medina
  • Publication number: 20130293405
    Abstract: 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: Application
    Filed: January 23, 2013
    Publication date: November 7, 2013
    Applicant: Analog Devices Technology
    Inventor: Italo Carlos Medina Sánchez-Castro
  • Publication number: 20130211017
    Abstract: 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: Application
    Filed: August 31, 2011
    Publication date: August 15, 2013
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Nathan Wilmot, Rajat Duggal, Juan Carlos Medina, Harshad M. Shah, Alan K. Schrock
  • Patent number: 8454251
    Abstract: A bracket for a printer includes a frame with first and second side supports. A print area is defined in part by the side supports. A plurality of web support members laterally extends between the first and second side supports. The plurality of web support members include a top web support member disposed adjacent a top portion of the print area and a bottom web support member disposed adjacent a bottom portion of the print area. A printer support is configured for supporting a printer adjacent the print area. A window assembly is hingedly attached to the frame adjacent the print area. The window assembly includes a platen support member extending laterally between the first and second side supports. The window assembly is movable to provide access to the print area. At least one platen is disposed on the platen support member, the platen adapted for lateral positioning along the platen support member.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: June 4, 2013
    Inventors: Chandrakant Bhatia, David Haas, Carlos Medina
  • Publication number: 20130096252
    Abstract: 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: Application
    Filed: June 29, 2011
    Publication date: April 18, 2013
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Kamesh R. Vyakaranam, Ling Zhang, William A. Koonce, Juan Carlos Medina, Ganesh Kailasam, Rajat Duggal, Nathan Wilmot
  • Publication number: 20130027343
    Abstract: 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: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Applicant: ANALOG DEVICES, INC.
    Inventors: Javier CALPE MARAVILLA, Alberto CARBAJO GALVE, Maria José MARTINEZ, Italo Carlos MEDINA
  • Publication number: 20130023625
    Abstract: 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: Application
    Filed: March 15, 2011
    Publication date: January 24, 2013
    Applicant: Dow Global Technologies LLC
    Inventors: Steven Montgomery, Shawn Brown, Mark F. Sonnenschein, Paul Foley, Phillip S. Athey, Juan Carlos Medina, John N. Argyropoulos, Benjamin L. Wendt, Cecile Boyer
  • Publication number: 20110170932
    Abstract: A bracket for a printer includes a frame with first and second side supports. A print area is defined in part by the side supports. A plurality of web support members laterally extends between the first and second side supports. The plurality of web support members include a top web support member disposed adjacent a top portion of the print area and a bottom web support member disposed adjacent a bottom portion of the print area. A printer support is configured for supporting a printer adjacent the print area. A window assembly is hingedly attached to the frame adjacent the print area. The window assembly includes a platen support member extending laterally between the first and second side supports. The window assembly is movable to provide access to the print area. At least one platen is disposed on the platen support member, the platen adapted for lateral positioning along the platen support member.
    Type: Application
    Filed: September 25, 2009
    Publication date: July 14, 2011
    Inventors: Chandrakant Bhatia, David Haas, Carlos Medina
  • Patent number: 7716546
    Abstract: A method for improved Logic Built-In Self-Test (LBIST) includes providing a plurality of control signal sets, by an LBIST controller, to an LBIST domain comprising a plurality of LBIST satellite modules. Each of the plurality of LBIST satellite modules receives an individual one of the plurality of control signal sets. The LBIST controller interleaves the LBIST channel scan and LBIST sequence operations for each of the LBIST satellite modules, through the plurality of control signal sets. A test system includes a Logic Built-In Self-Test (LBIST) domain comprising a plurality of LBIST satellite modules. An LBIST controller couples to the LBIST domain and provides a plurality of control signal sets to the LBIST domain, wherein each of the plurality of LBIST satellite modules receives an individual one of the plurality of control signal sets. The LBIST controller interleaves LBIST channel scan operations for each of the LBIST satellite modules, through the plurality of control signal sets.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: May 11, 2010
    Assignee: International Business Machines Corporation
    Inventors: Hien Minh Le, Robert Christopher Dixon, Luis Carlos Medina, Tung Nguyen Pham
  • Publication number: 20090304476
    Abstract: A load-restraining barrier net for use in a motor vehicle capable of securing cargo within the trunk area of a vehicle in accordance with established safety requirements. The barrier net includes a body primarily made up of diamond/square or hexagon shaped netting, frame strap webbings around the perimeter of the net, and at least two horizontal and at least two vertical central strap webbings across the center of the net. The net is securely affixed on one side through a first set of attachments including oval rings bolted to the vehicle. These attachments prevent the cargo from slipping below the net to an unsecured position. Further, corner oval rings act as the joint attachment for the vertical and horizontal frame strap webbings, allowing the barrier net to withstand angular momentum from inertial forces. A second, releasable, set of attachments including hooks and/or D-ring connections that attach to D-rings and/or fasteners pre-installed in the vehicle.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 10, 2009
    Inventors: Robert Pickens, Omar Jose Ruiz, Martin Parsons, Carlos Medina