Patents by Inventor Javier Guzman

Javier Guzman 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).

  • Patent number: 11091419
    Abstract: Processes are described for purifying a biphenyldicarboxylic acid product containing one or more impurities, particularly at least formylbiphenylcarboxylic acid. In the processes, a mixture comprising the biphenyldicarboxylic acid product is contacted with hydrogen in the presence of a hydrogenation catalyst under conditions to selectively reduce at least part of the formylbiphenylcarboxylic acid to produce a hydrogenation effluent comprising (i) hydroxymethylbiphenylcarboxylic acid and/or methylbiphenylcarboxylic acid, and (ii) biphenylcarboxylic acid. At least a portion of the biphenyldicarboxylic acid is then separated from the hydrogenation effluent. Advantageously, a polyester product may be produced from the separated biphenyldicarboxylic acid.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: August 17, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Etienne Mazoyer, Monica D. Lotz, Constantinos P. Bokis, Javier Guzman
  • Publication number: 20210162379
    Abstract: This invention is related to the synthesis of organic carbonates from carbon dioxide and epoxides. It is particularly focused on the production of propylene cyclic carbonate from propylene oxide. The proposed catalytic materials includes a support made of aluminum oxyhydroxide (Catapal B®), nitric acid, acetic acid and/or phosphoric acid. An important stage is the physical and chemical conditioning of the catalytic materials and to this end, experimental methodologies such as spheronization and thermal treatments were implemented prior the evaluation process.
    Type: Application
    Filed: November 22, 2020
    Publication date: June 3, 2021
    Inventors: Javier GUZMAN PANTOJA, Edith MENESES RUIZ, Candido AGUILAR BARRERA, Andrea RODRIGUEZ HERNANDEZ, Isidoro GARCIA CRUZ, Jose Antonio MUNOZ ARROYO, Juan Carlos GAYTAN RAMOS
  • Publication number: 20200361847
    Abstract: Processes are described for purifying a biphenyldicarboxylic acid product containing one or more impurities, particularly at least formylbiphenylcarboxylic acid. In the processes, a mixture comprising the biphenyldicarboxylic acid product is contacted with hydrogen in the presence of a hydrogenation catalyst under conditions to selectively reduce at least part of the formylbiphenylcarboxylic acid to produce a hydrogenation effluent comprising (i) hydroxymethylbiphenylcarboxylic acid and/or methylbiphenylcarboxylic acid, and (ii) biphenylcarboxylic acid. At least a portion of the biphenyldicarboxylic acid is then separated from the hydrogenation effluent. Advantageously, a polyester product may be produced from the separated biphenyldicarboxylic acid.
    Type: Application
    Filed: May 11, 2018
    Publication date: November 19, 2020
    Inventors: Etienne Mazoyer, Monica D. Lotz, Constantinos P. Bokis, Javier Guzman
  • Patent number: 10815896
    Abstract: A high temperature article, for example an igniter for a combustor is presented. The igniter includes a central electrode having a discharge end, an insulator sleeve surrounding the central electrode and a tubular electrode shell surrounding the insulator sleeve. The tubular electrode shell has a forward end projecting beyond the discharge end. The tubular electrode shell includes an iron-based alloy. The igniter further includes a protective coating including alumina disposed on a surface of the forward end. A combustor of a turbine engine, including the igniter is also presented.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: October 27, 2020
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Daniel Qi Tan, Shekhar Shripad Kamat, Wei Zhang, Javier Guzman Padilla, Santiago Blackaller Ledesma
  • Publication number: 20200290945
    Abstract: Processes are described for purifying a biphenyldicarboxylic acid product containing one or more impurities, particularly at least formylbiphenylcarboxylic acid. In the processes, at least a portion of the biphenyldicarboxylic acid product is contacted with an alcohol under conditions effective to esterify at least part of the biphenyldicarboxylic acid and at least part of the formylbiphenylcarboxylic acid and produce an esterification effluent containing biphenyldicarboxylic acid diester and formylbiphenylcarboxylic acid ester. At least part of the biphenyldicarboxylic acid diester is then separated from the esterification effluent by crystallization. Advantageously, a polyester product may be produced from the separated biphenyldicarboxylic acid diester.
    Type: Application
    Filed: June 7, 2018
    Publication date: September 17, 2020
    Inventors: Monica D. Lotz, Etienne Mazoyer, Constantinos P. Bokis, Javier Guzman
  • Patent number: 10770096
    Abstract: A recording head includes a bearing surface, a first writer and a first shield structure for the first writer. The recording head also includes a second writer and a second shield structure for the second writer. The recording head further includes a magnetic bridge connecting the first shield structure to the second shield structure at the bearing surface.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: September 8, 2020
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Wei Tian, Javier Guzman, Jianhua Xue, Kirill Rivkin, Jian Zhong, Lei Lu
  • Patent number: 10759900
    Abstract: Liquid crystalline hydroquinone-3,4?-biphenyl dicarboxylate polyesters, and methods of making them. The polyesters may be melt processed at a temperature below the thermal decomposition temperature and the isotropic temperature, and may form a liquid crystalline glass phase. The polyesters may be formed by polycondensation of hydroquinone or a hydroquinone derivative with 3,4?-biphenyl dicarboxylic acid.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: September 1, 2020
    Assignees: ExxonMobil Chemical Patents Inc., Virginia Tech Intellectual Property, Inc.
    Inventors: Katherine V. Heifferon, Timothy E. Long, S. Richard Turner, Yong Yang, Syamal Tallury, Ting Chen, Javier Guzman
  • Publication number: 20200270396
    Abstract: Liquid crystalline hydroquinone-3,4?-biphenyl dicarboxylate polyesters, and methods of making them. The polyesters may be melt processed at a temperature below the thermal decomposition temperature and the isotropic temperature, and may form a liquid crystalline glass phase. The polyesters may be formed by polycondensation of hydroquinone or a hydroquinone derivative with 3,4?-biphenyl dicarboxylic acid.
    Type: Application
    Filed: May 6, 2020
    Publication date: August 27, 2020
    Inventors: Katherine V. Heifferon, Timothy E. Long, S. Richard Turner, Yong Yang, Syamal Tallury, Ting Chen, Javier Guzman
  • Patent number: 10559319
    Abstract: A method of forming a recording head for use with a data storage medium in a data storage device. The method includes forming first and second writers of different target geometries. A first recording measurement is performed on one or more storage media using the first writer. A second recording measurement is performed on the one or more storage media using the second writer. Based on a comparison of the first and second recording measurements to a predetermined quantity, either the first writer or the second writer is selected to be operational in the data storage device.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: February 11, 2020
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Kurt Wiesen, Javier Guzman, Joseph Mundenar, Michael Conover
  • Publication number: 20190221229
    Abstract: A method of forming a recording head for use with a data storage medium in a data storage device. The method includes forming first and second writers of different target geometries. A first recording measurement is performed on one or more storage media using the first writer. A second recording measurement is performed on the one or more storage media using the second writer. Based on a comparison of the first and second recording measurements to a predetermined quantity, either the first writer or the second writer is selected to be operational in the data storage device.
    Type: Application
    Filed: March 21, 2019
    Publication date: July 18, 2019
    Inventors: Kurt Wiesen, Javier Guzman, Joseph Mundenar, Michael Conover
  • Publication number: 20190193063
    Abstract: The present invention describes a process to prepare catalyst systems based on metal salts, supported on natural polymers and co-catalyzed by organic bases, for the catalytic transformation of carbon dioxide to organic carbonates through cycloaddition reactions to epoxides. The advantages of the presented system can be summarized on the use of raw materials of low cost for the preparation of the catalyst system, minimal environmental risk due to the low toxicity of the materials used, in some cases biodegradable such as the natural polymers, as well as high catalytic efficiency, reaching selectivities up to 100% and in some cases quantitative yields.
    Type: Application
    Filed: June 23, 2017
    Publication date: June 27, 2019
    Inventors: Heriberto DÍAZ VELÁZQUEZ, Rafael MARTÍNEZ PALOU, Javier GUZMÁN PANTOJA, Roberto GARCÍA DE LEÓN
  • Patent number: 10325619
    Abstract: A method of forming a recording head for use with a data storage medium in a data storage device. The method includes forming first and second writers of different target geometries. A first recording measurement is performed on one or more storage media using the first writer. A second recording measurement is performed on the one or more storage media using the second writer. Based on a comparison of the first and second recording measurements to a predetermined quantity, either the first writer or the second writer is selected to be operational in the data storage device.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: June 18, 2019
    Assignee: Seagate Technology LLC
    Inventors: Kurt Wiesen, Javier Guzman, Joseph Mundenar, Michael Conover
  • Publication number: 20190168197
    Abstract: A small pore size synthetic zeolite having a degree of crystallinity of at least 80% and comprising at least 0.01 wt % based on the weight of the zeolite of at least one catalytic metal selected from the group consisting of Ru, Rh, Pd, Ag, Os, Ir, Pt, Au, Mo, W, Re, Co, Ni, Zn, Cr, Mn, Ce, Ga and combinations thereof, wherein at least 80% of the catalytic metal is encapsulated in the zeolite, wherein if the zeolite is an aluminosilicate it has a SiO2:Al2O3 molar ratio of greater than 6:1.
    Type: Application
    Filed: May 24, 2017
    Publication date: June 6, 2019
    Applicant: ExxonMobil Chemical Company - Law Technology
    Inventors: Avelino CORMA CANOS, Javier GUZMAN, Manuel MOLINER MARIN, Pedro M. SERNA MERINO, Karl G. STROHMAIER
  • Publication number: 20190170066
    Abstract: A high temperature article, for example an igniter for a combustor is presented. The igniter includes a central electrode having a discharge end, an insulator sleeve surrounding the central electrode and a tubular electrode shell surrounding the insulator sleeve. The tubular electrode shell has a forward end projecting beyond the discharge end. The tubular electrode shell includes an iron-based alloy. The igniter further includes a protective coating including alumina disposed on a surface of the forward end. A combustor of a turbine engine, including the igniter is also presented.
    Type: Application
    Filed: December 5, 2017
    Publication date: June 6, 2019
    Inventors: Daniel Qi Tan, Shekhar Shripad Kamat, Wei Zhang, Javier Guzman Padilla, Santiago Blackaller Ledesma
  • Publication number: 20190144774
    Abstract: Methods are provided for modifying hydrogenation catalysts having silica supports (or other non-alumina supports) with additional alumina, and using such catalysts to achieve unexpectedly superior hydrogenation of feedstocks. The modified hydrogenation catalysts can have a relatively low cracking activity while providing an increased activity for hydrogenation.
    Type: Application
    Filed: January 8, 2019
    Publication date: May 16, 2019
    Inventors: Michael P. LANCI, Stuart L. SOLED, Javier GUZMAN, Sabato MISEO, Thomas E. GREEN, Joseph E. BAUMGARTNER, Lei ZHANG, Christine E. KLIEWER, Lukasz KOZIOL, Kanmi MAO, Tracie OWENS, Gary P. SCHLEICHER
  • Patent number: 10255933
    Abstract: A method of forming a recording head for use with a data storage medium in a data storage device. The method includes forming first and second writers of different target geometries. A first recording measurement is performed on one or more storage media using the first writer. A second recording measurement is performed on the one or more storage media using the second writer. Based on a comparison of the first and second recording measurements to a predetermined quantity, either the first writer or the second writer is selected to be operational in the data storage device.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: April 9, 2019
    Assignee: Seagate Technology LLC
    Inventors: Kurt Wiesen, Javier Guzman, Joseph Mundenar, Michael Conover
  • Patent number: 10227539
    Abstract: Methods are provided for modifying hydrogenation catalysts having silica supports (or other non-alumina supports) with additional alumina, and using such catalysts to achieve unexpectedly superior hydrogenation of feedstocks. The modified hydrogenation catalysts can have a relatively low cracking activity while providing an increased activity for hydrogenation.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: March 12, 2019
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Michael P. Lanci, Stuart L. Soled, Javier Guzman, Sabato Miseo, Thomas E. Green, Joseph E. Baumgartner, Lei Zhang, Christine E. Kliewer, Lukasz Koziol, Kanmi Mao, Tracie L. Owens, Gary P. Schleicher
  • Patent number: 10227535
    Abstract: Methods are provided for modifying hydrogenation catalysts having silica supports (or other non-alumina supports) with additional alumina, and using such catalysts to achieve unexpectedly superior hydrogenation of feedstocks. The modified hydrogenation catalysts can have a relatively low cracking activity while providing an increased activity for hydrogenation.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: March 12, 2019
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Michael P. Lanci, Stuart L. Soled, Javier Guzman, Sabato Miseo, Thomas E. Green, Joseph E. Baumgartner, Lei Zhang, Christine E. Kliewer, Lukasz Koziol, Kanmi Mao, Tracie L. Owens, Gary P. Schleicher, Xiaochun Xu
  • Patent number: 10210891
    Abstract: A storage device includes a storage medium and a transducer head with two writers positioned to write to a same surface of the storage medium. The two writers are separated from one another along a down-track direction of a data track on the storage medium and independently controllable to write data.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: February 19, 2019
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Wei Tian, Jianhua Xue, Wenzhong Zhu, Ralph W. Cross, Javier Guzman
  • Publication number: 20180264450
    Abstract: The precursor of a hydroprocessing catalyst is made by impregnating a metal oxide component comprising at least one metal from Group 6 of the Periodic Table and at least one metal from Groups 8-10 of the Periodic Table with an amide formed from a first organic compound containing at least one amine group, and a second organic compound containing at least one carboxylic acid group. Following impregnation heat treatment follows to form in situ generated unsaturation additional to that in the two organic compounds. The catalyst precursor is sulfided to form an active, sulfide hydroprocessing catalyst.
    Type: Application
    Filed: April 27, 2018
    Publication date: September 20, 2018
    Inventors: STUART L. SOLED, SABATO MISEO, JOSEPH E. BAUMGARTNER, IULIAN NISTOR, PARTHA NANDI, JAVIER GUZMAN, DORON LEVIN, Keith Wilson, JACOB ARIE BERGWERFF, RONALD HUIBERTS, ARNOLD VAN LOEVEZIJN