Patents by Inventor Van Hoa

Van Hoa 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: 11680780
    Abstract: The invention proposes the design of a pyrotechnic initiator applied in the aerospace field, including three main components: the housing, the burning bridge and the pyrotechnic dose. The housing has a protective effect and increases the power of the pyrotechnic dose, in which the number of threads and the thread length are calculated to ensure to withstand the fire pressure. The burning bridge generates heat to ignite the ignition dose, the diameter of the bridge is calculated to ensure the resistance of the burning bridge. The pyrotechnic dose consists of 3 ingredient doses, which are the ignition dose, the intermediate dose, and the fire-boosting dose. In which, the mass, composition and density of the doses are calculated to ensure that the required working pressure is created.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: June 20, 2023
    Assignee: VIETTEL GROUP
    Inventors: Minh Tuan Hoang, Manh Cuong Tran, Thanh Cong Le, Xuan Doan Dang, Tien Hoa Nguyen, Van Hoa Le
  • Publication number: 20220003528
    Abstract: The invention proposes the design of a pyrotechnic initiator applied in the aerospace field, including three main components: the housing, the burning bridge and the pyrotechnic dose. The housing has a protective effect and increases the power of the pyrotechnic dose, in which the number of threads and the thread length are calculated to ensure to withstand the fire pressure. The burning bridge generates heat to ignite the ignition dose, the diameter of the bridge is calculated to ensure the resistance of the burning bridge. The pyrotechnic dose consists of 3 ingredient doses, which are the ignition dose, the intermediate dose, and the fire-boosting dose. In which, the mass, composition and density of the doses are calculated to ensure that the required working pressure is created.
    Type: Application
    Filed: May 10, 2021
    Publication date: January 6, 2022
    Applicant: VIETTEL GROUP
    Inventors: MINH TUAN HOANG, MANH CUONG TRAN, THANH CONG LE, XUAN DOAN DANG, TIEN HOA NGUYEN, VAN HOA LE
  • Publication number: 20200023569
    Abstract: Systems and methods for 4D printing of composites are described herein. A composite layer arrangement is obtained for forming a composite laminate having a substantially flat profile. A plurality of composite layers are deposited according to the composite layer arrangement to form the composite laminate. The composite laminate is activated to produce a curved composite structure.
    Type: Application
    Filed: July 20, 2018
    Publication date: January 23, 2020
    Inventor: SUONG VAN HOA
  • Patent number: 10160837
    Abstract: According to one embodiment, a method of dispersing nanoparticles into a destination material includes providing a plurality of nanoparticles suspended in a carrier, adding a solvent to the plurality of nanoparticles suspended in a carrier, removing at least some of the carrier to yield the plurality of nanoparticles suspended in the solvent, mixing the nanoparticles suspended in the solvent with a destination material, and removing at least some of the solvent from the mixture of nanoparticles suspended in the solvent and the destination material.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: December 25, 2018
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Iosif Daniel Rosca, Martin Salameh, Suong Van Hoa
  • Publication number: 20180134853
    Abstract: According to one embodiment, a method of dispersing nanoparticles into a destination material includes providing a plurality of nanoparticles suspended in a carrier, adding a solvent to the plurality of nanoparticles suspended in a carrier, removing at least some of the carrier to yield the plurality of nanoparticles suspended in the solvent, mixing the nanoparticles suspended in the solvent with a destination material, and removing at least some of the solvent from the mixture of nanoparticles suspended in the solvent and the destination material.
    Type: Application
    Filed: December 19, 2017
    Publication date: May 17, 2018
    Applicant: Bell Helicopter Textron Inc.
    Inventors: Iosif Daniel Rosca, Martin Salameh, Suong Van Hoa
  • Patent number: 9928967
    Abstract: Provided is a three-dimensional composite of nickel cobalt oxide/graphene on nickel foam as high-performance electrode materials for supercapacitors and a method for preparing the same, and the electrode comprising a three-dimensional nickel cobalt oxide/graphene on nickel foam exhibited an ultrahigh specific capacitance of 2,260 F/g at a current density of 1 A/g.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: March 27, 2018
    Assignee: Research Cooperation Foundation of Yeungnam University
    Inventors: Jae-Jin Shim, Van Hoa Nguyen
  • Patent number: 9845381
    Abstract: According to one embodiment, a method of dispersing nanoparticles into a destination material includes providing a plurality of nanoparticles suspended in a carrier, adding a solvent to the plurality of nanoparticles suspended in a carrier, removing at least some of the carrier to yield the plurality of nanoparticles suspended in the solvent, mixing the nanoparticles suspended in the solvent with a destination material, and removing at least some of the solvent from the mixture of nanoparticles suspended in the solvent and the destination material.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: December 19, 2017
    Assignee: BELL HELICOPTER TEXTRON INC.
    Inventors: Iosif Daniel Rosca, Martin Salameh, Suong Van Hoa
  • Publication number: 20170053750
    Abstract: Provided is a three-dimensional composite of nickel cobalt oxide/graphene on nickel foam as high-performance electrode materials for supercapacitors and a method for preparing the same, and the electrode comprising a three-dimensional nickel cobalt oxide/graphene on nickel foam exhibited an ultrahigh specific capacitance of 2,260 F/g at a current density of 1 A/g.
    Type: Application
    Filed: August 17, 2016
    Publication date: February 23, 2017
    Applicant: RESEARCH COOPERATION FOUNDATION OF YEUNGNAM UNIVERSITY
    Inventors: Jae-Jin SHIM, Van Hoa Nguyen
  • Publication number: 20160159991
    Abstract: According to one embodiment, a method of dispersing nanoparticles into a destination material includes providing a plurality of nanoparticles suspended in a carrier, adding a solvent to the plurality of nanoparticles suspended in a carrier, removing at least some of the carrier to yield the plurality of nanoparticles suspended in the solvent, mixing the nanoparticles suspended in the solvent with a destination material, and removing at least some of the solvent from the mixture of nanoparticles suspended in the solvent and the destination material.
    Type: Application
    Filed: March 11, 2014
    Publication date: June 9, 2016
    Applicant: BELL HELICOPTER TEXTRON INC.
    Inventors: Iosif Daniel Rosca, Martin Salameh, Suong Van Hoa
  • Patent number: 9260633
    Abstract: An electrically conductive adhesive sheet for joining structural elements, the adhesive sheet comprising Bucky paper impregnated with an adhesive resin is provided. A method of forming an electrically conductive joint between structural elements and a process of making an electrically conductive adhesive sheet for joining structural elements are also provided.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: February 16, 2016
    Assignee: CONCORDIA UNIVERSITY
    Inventors: Suong Van Hoa, Daniel Iosif Rosca
  • Patent number: 8998134
    Abstract: A fiber-reinforced, organic matrix, composite structural member includes a plurality of layers of fiber-reinforced, organic matrix, composite material in which adjacent layers are bonded to one another, wherein the structural member exhibits a non-linear stress-strain response when mechanically loaded to failure. A helicopter landing gear includes a pair of skids and one or more cross members extending between the pair of skids. The one or more cross members includes a plurality of layers of fiber-reinforced, organic matrix, composite material in which adjacent layers are bonded to one another, wherein the cross members exhibit non-linear stress-strain responses when mechanically loaded to failure.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: April 7, 2015
    Assignee: Textron Innovations Inc.
    Inventors: Robert Clive Fews, Bijan Derisi, Suong Van Hoa, Mehdi Hojjati
  • Patent number: 8865798
    Abstract: A self-healing material comprises a matrix embedded with micro-pockets of a healing-agent releasable by a crack in the matrix. The healing-agent is able to bond to the matrix to repair the crack. The healing-agent is contained in microcapsules. A corresponding catalyst for the healing-agent is embedded in the matrix and contained in a plurality of microcapsules as an emulsion. The emulsion comprises an oil, a perfluorated solvent, a hydrophobic ionic liquid, or mixtures thereof. A method of manufacturing the self-healing material comprises the steps of identifying an operational temperature range of the material, providing at least one substance as the healing-agent, which substance remaining substantially in a liquid state within the operational temperature range, identifying an operational evaporation rate of the healing-agent and providing the substance with a curing time according to the evaporation rate.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: October 21, 2014
    Assignees: Valorbec Societe en Commandite, MPB Communications Inc.
    Inventors: Philippe Merle, Yoann Guntzburger, Émile Haddad, Suong Van Hoa, Girish Thatte
  • Publication number: 20120298927
    Abstract: An electrically conductive adhesive sheet for joining structural elements, the adhesive sheet comprising Bucky paper impregnated with an adhesive resin is provided. A method of forming an electrically conductive joint between structural elements and a process of making an electrically conductive adhesive sheet for joining structural elements are also provided.
    Type: Application
    Filed: January 12, 2011
    Publication date: November 29, 2012
    Applicant: CONCORDIA UNIVERSITY
    Inventors: Suong Van Hoa, Daniel Iosif Rosca
  • Patent number: 8230429
    Abstract: Illustrative embodiments manage deadlock in a data processing system during an IPL process that includes monitoring the usage of locks in the Hardware Object Model (HOM) of the data processing system. The process further includes detecting a deadlock condition in response to an indication of the IPL process in the data processing system entering a hung state when at least one lock is in use. The process also includes handling the deadlock condition by performing one or more of the following: recording error information for the deadlock condition, and terminating the IPL process.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: July 24, 2012
    Assignee: International Business Machines Corporation
    Inventors: Van Hoa Lee, David Dean Sanner, Alan Hlava
  • Publication number: 20110210201
    Abstract: A fiber-reinforced, organic matrix, composite structural member includes a plurality of layers of fiber-reinforced, organic matrix, composite material in which adjacent layers are bonded to one another, wherein the structural member exhibits a non-linear stress-strain response when mechanically loaded to failure. A helicopter landing gear includes a pair of skids and one or more cross members extending between the pair of skids. The one or more cross members includes a plurality of layers of fiber-reinforced, organic matrix, composite material in which adjacent layers are bonded to one another, wherein the cross members exhibit non-linear stress-strain responses when mechanically loaded to failure.
    Type: Application
    Filed: June 19, 2009
    Publication date: September 1, 2011
    Inventors: Robert Clive Fews, Bijan Derisi, Suong Van Hoa, Mehdi Hojjati
  • Patent number: 7937555
    Abstract: A method, system, and computer instructions for providing valid translation entries in the TCE table for all supported DMA addresses to prevent the occurrence of system errors due to prefetching. A page is reserved in system memory. This reserved page is made unavailable to the operating system and may not be utilized by any software in the system. The reserved page is also written with all bytes set to 0xFF. The system firmware then selects a region in system memory for the TCE table. The TCE table is initialized, with all entries within the TCE table initialized to be valid and contain the corresponding address of the reserved page.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: May 3, 2011
    Assignee: International Business Machines Corporation
    Inventor: Van Hoa Lee
  • Patent number: 7921250
    Abstract: A method, system, and computer instructions for changing the lock-bits combination used to lock a resource upon receiving a system reset exception. The present invention forces the software to use different lock-bits combinations based on the number of occurrences of system reset exceptions. When a system reset exception is received, a system reset exception bit value in a special purpose register is updated based on the history of system reset exception occurrences. Based on the updated value in the system reset exception bit, the lock-bits combination for locking a resource is changed to allow the data processing system to reuse the resource with bad lock-bits. In this manner, the deadlocked resource is resolved, and a processor is not able to obtain an indefinitely held lock on system resources caused by system reset exceptions.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: April 5, 2011
    Assignee: International Business Machines Corporation
    Inventor: Van Hoa Lee
  • Publication number: 20090300644
    Abstract: A method for managing deadlock in a data processing system during an IPL process includes monitoring the usage of locks in the Hardware Object Model (HOM) of the data processing system. The process further includes detecting a deadlock condition in response to an indication of the IPL process in the data processing system entering a hung state when at least one lock is in use. The process further includes handling the deadlock condition by performing one or more of the following: recording error information for the deadlock condition, and terminating the IPL process.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 3, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Van Hoa Lee, David Dean Sanner, Alan Hlava
  • Patent number: 7536571
    Abstract: A method, computer program product, and a data processing system for maintaining operation of the data processing system in the event of a degraded system cooling condition is provided. A first temperature of a processor is identified as equaling or exceeding a processor throttling threshold. The operational frequency of the processor is reduced by a first frequency increment. The operational voltage of the processor is then reduced by a first voltage increment. Updated values of the processor temperature are periodically obtained and continued reductions in the frequency and operational voltage are made until the temperature indicates that the processor is operating in a stable throttle range. The frequency and operational voltage of the processor may be returned to normal levels when an updated temperature of the processor is less or equal to a throttle off threshold.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: May 19, 2009
    Assignee: International Business Machines Corporation
    Inventors: Steven Paul Hartman, Van Hoa Lee
  • Publication number: 20090036568
    Abstract: A self-healing material comprises a matrix embedded with micro-pockets of a healing-agent releasable by a crack in the matrix. The healing-agent is able to bond to the matrix to repair the crack. The healing-agent is contained in microcapsules. A corresponding catalyst for the healing-agent is embedded in the matrix and contained in a plurality of microcapsules as an emulsion. The emulsion comprises an oil, a perfluorated solvent, a hydrophobic ionic liquid, or mixtures thereof. A method of manufacturing the self-healing material comprises the steps of identifying an operational temperature range of the material, providing at least one substance as the healing-agent, which substance remaining substantially in a liquid state within the operational temperature range, identifying an operational evaporation rate of the healing-agent and providing the substance with a curing time according to the evaporation rate.
    Type: Application
    Filed: October 17, 2007
    Publication date: February 5, 2009
    Inventors: Philippe Merle, Yoann Guntzburger, Emile Haddad, Suong Van Hoa, Girish Thatte