Patents by Inventor Julie Chen

Julie Chen 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: 20150366074
    Abstract: Metal flakes, an organic metal precursor, an organic solvent and either no binder, or a volatile or a thermally decomposable binder are combined to form a paste. The paste is deposited in a circuit pattern on a substrate and the circuit pattern is cured. While curing, the organic metal precursor decomposes to leave an electrically conductive path, and the printed circuit is thus formed. A precursor to an electrically conductive circuit material includes an organic metal precursor, metal microparticles, and an organic solvent. The method can be employed to form printed circuits, for a variety of electrical, electronic and sensing application, such as crack detection in ceramic, plastics, concrete, wood, fabric, leather, rubber or paper and composite materials.
    Type: Application
    Filed: March 31, 2015
    Publication date: December 17, 2015
    Inventors: Ramaswamy Nagarajan, Sharavanan Balasubramanian, Julie Chen, Joey Mead
  • Patent number: 9078294
    Abstract: The present invention provides devices and methods for making nano structures such a nanoheater. In one embodiment, the nanoheater element comprises a first reactive member and interlayer disposed in communication with at least a portion thereof. Preferably, contact between the first and second reactive members of the nanoheater element can yield at least one exothermic reaction. A nanoheater device of the invention can optionally comprise a substrate on which the first reactive member is positioned in combination with other components. The invention also provides a nanoheater system comprising a plurality of nanoheater elements. Exemplary nanoheater elements and systems can be used to perform a method of the invention in which heat is produced. Methods includes processes for fabricating nanostructures such as layered devices, nanorods and nanowires.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: July 7, 2015
    Assignees: University of Massachusetts, Northeastern University
    Inventors: Charalabos C. Doumanidis, Teiichi Ando, Julie Chen, Claus G. Rebholz
  • Patent number: 9038483
    Abstract: Wireless strain and displacement sensors wirelessly monitor structural health and integrity, and are made by printing inductor-interdigital capacitor sensing circuits on a variety of substrates, including ceramic substrates, with thermally processable conductive inks. Sensors of the invention can be employed to detect strain and displacement of civil structures, such as bridges and buildings. The sensors include sensing elements that are mounted or printed on stiff, inflexible substrates, which prevent the sensing elements from bending, stretching, or otherwise warping when the sensor is strained. An interlayer between the sensing elements allows the sensing elements to move with respect to each other during application of strain. Thus, strain causes the sensing elements to move but not to deform, causing changes in sensor resonance that can be detected through wireless radio-frequency interrogation.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: May 26, 2015
    Assignee: University of Massachusetts
    Inventors: Ramaswamy Nagarajan, Jungrae Park, Sharavanan Balasubramaniam, Mario J. Cazeca, Shivshankar Sivasubramanian, Joey Mead, Julie Chen
  • Patent number: 8999431
    Abstract: Metal flakes, an organic metal precursor, an organic solvent and either no binder, or a volatile or a thermally decomposable binder are combined to form a paste. The paste is deposited in a circuit pattern on a substrate and the circuit pattern is cured. While curing, the organic metal precursor decomposes to leave an electrically conductive path, and the printed circuit is thus formed. A precursor to an electrically conductive circuit material includes an organic metal precursor, metal microparticles, and an organic solvent. The method can be employed to form printed circuits, for a variety of electrical, electronic and sensing application, such as crack detection in ceramic, plastics, concrete, wood, fabric, leather, rubber or paper and composite materials.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: April 7, 2015
    Assignee: University of Massachusetts Lowell
    Inventors: Ramaswamy Nagarajan, Sharavanan Balasubramaniam, Julie Chen, Joey Mead
  • Publication number: 20120297888
    Abstract: Wireless strain and displacement sensors wirelessly monitor structural health and integrity, and are made by printing inductor-interdigital capacitor sensing circuits on a variety of substrates, including ceramic substrates, with thermally processable conductive inks. Sensors of the invention can be employed to detect strain and displacement of civil structures, such as bridges and buildings. The sensors include sensing elements that are mounted or printed on stiff, inflexible substrates, which prevent the sensing elements from bending, stretching, or otherwise warping when the sensor is strained. An interlayer between the sensing elements allows the sensing elements to move with respect to each other during application of strain. Thus, strain causes the sensing elements to move but not to deform, causing changes in sensor resonance that can be detected through wireless radio-frequency interrogation.
    Type: Application
    Filed: September 7, 2010
    Publication date: November 29, 2012
    Inventors: Ramaswamy Nagarajan, Jungrae Park, Sharavanan Balasubramaniam, Mario J. Cazeca, Shivshankar Sivasubramanian, Joey Mead, Julie Chen
  • Publication number: 20120273263
    Abstract: Metal flakes, an organic metal precursor, an organic solvent and either no binder, or a volatile or a thermally decomposable binder are combined to form a paste. The paste is deposited in a circuit pattern on a substrate and the circuit pattern is cured. While curing, the organic metal precursor decomposes to leave an electrically conductive path, and the printed circuit is thus formed. A precursor to an electrically conductive circuit material includes an organic metal precursor, metal microparticles, and an organic solvent. The method can be employed to form printed circuits, for a variety of electrical, electronic and sensing application, such as crack detection in ceramic, plastics, concrete, wood, fabric, leather, rubber or paper and composite materials.
    Type: Application
    Filed: December 1, 2009
    Publication date: November 1, 2012
    Inventors: Ramaswamy Nagarajan, Sharavanan Balasubramaniam, Julie Chen, Joey Mead
  • Publication number: 20120132644
    Abstract: The present invention relates to methods of fabricating nanostructures using a replacement reaction. In a preferred embodiment, metal particles in an inert atmosphere undergo a replacement reaction to form a layer on the metal particle which is removed to form a high surface area nanostructure. A preferred embodiment includes the fabrication of heater elements, powders and heater assemblies using the nanostructures.
    Type: Application
    Filed: March 16, 2010
    Publication date: May 31, 2012
    Inventors: Zhiyong Gu, Qingzhou Cui, Julie Chen, Teiichi Ando
  • Publication number: 20120015211
    Abstract: The present invention relates to methods of fabricating nanostructures using a replacement reaction. In a preferred embodiment, metal particles in an inert atmosphere undergo a replacement reaction to form a layer on the metal particle which is removed to form a high surface area nanostructure. A preferred embodiment includes the fabrication of heater elements, powders and heater assemblies using the nanostructures.
    Type: Application
    Filed: March 16, 2010
    Publication date: January 19, 2012
    Inventors: Zhiyong Gu, Qingzhou Cui, Julie Chen
  • Publication number: 20090235915
    Abstract: The present invention provides devices and methods for making nano structures such a nanoheater In one embodiment, the nanoheater element comprises a first reactive member and interlayer disposed in communication with at least a portion thereof. Preferably, contact between the first and second reactive members of the nanoheater element can yield at least one exothermic reaction. A nanoheater device of the invention can optionally comprise a substrate on which the first reactive member is positioned in combination with other components. The invention also provides a nanoheater system comprising a plurality of nanoheater elements. Exemplary nanoheater elements and systems can be used to perform a method of the invention in which heat is produced. Methods includes processes for fabricating nanostructures such as layered devices, nanorods and nanowires.
    Type: Application
    Filed: August 7, 2007
    Publication date: September 24, 2009
    Inventors: Charalabos C. Doumanidis, Teiichi Ando, Julie Chen, Claus G. Rebholz
  • Patent number: 7225209
    Abstract: A method and article of manufacture, implementing the method, allocates space for a dataset. The dataset has an initial area and zero or more additional allocated areas to provide space for storing the dataset. The size of a new additional area is determined. The new additional area is associated with a new area number, and the size of the new additional area is based on the new area number. Additional space for the dataset is allocated based on the size of the new additional area.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: May 29, 2007
    Assignee: International Business Machines Corporation
    Inventors: Michael John Bracey, John Joseph Campbell, Julie Chen, Akira Shibamiya, Bryan Frederick Smith, James Zu-Chia Teng
  • Patent number: 7181481
    Abstract: A base table and related auxiliary table spaces are reorganized concurrently via a database utility. The database utility determines which auxiliary tables are related to the base table and automatically includes their respective auxiliary table in the same invocation of the utility. The reorganization is performed via allocated shadow data sets. The original data sets are switched with the newly built shadow data sets including the LOB shadows.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: February 20, 2007
    Assignee: International Business Machines Corporation
    Inventors: Julie Chen, William James Franklin, John Marland Garth, Li-Mey Lee, John Richard Lyle, Frances Hwa Villafuerte, Jay A. Yothers
  • Patent number: 6987650
    Abstract: Increasing the output signal from CPP GMR devices by increasing the read current has not previously been considered an option because it would make the device run too hot. This problem has been overcome by using, for the upper and lower leads, materials that differ significantly in their thermoelectric powers. Thus, when DC is passed through the device, from ? to + TEP leads, hot and cold junctions are formed and heat is transferred from the micro-device into the leads, resulting in a net local cooling of the device which enables it to operate at higher power. For a GMR device, this translates to a larger output voltage, making it easier, more sensitive, and more reliable to use.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: January 17, 2006
    Assignee: Headway Technologies, Inc.
    Inventors: Yue Liu, Kochan Ju, Jei-Wei Chang, Julie Chen
  • Publication number: 20050102331
    Abstract: A method and article of manufacture, implementing the method, allocates space for a dataset. The dataset has an initial area and zero or more additional allocated areas to provide space for storing the dataset. The size of a new additional area is determined. The new additional area is associated with a new area number, and the size of the new additional area is based on the new area number. Additional space for the dataset is allocated based on the size of the new additional area. Alternately, an apparatus stores a dataset. A computer has a data storage device connected thereto. The data storage device has a plurality of areas for storing a dataset. The plurality of areas comprises an initial area having an initial area size and a plurality of additional areas having an additional area size, wherein the additional area size varies. In one embodiment, the additional area size monotonically increases.
    Type: Application
    Filed: November 6, 2003
    Publication date: May 12, 2005
    Inventors: Michael Bracey, John Campbell, Julie Chen, Akira Shibamiya, Bryan Smith, James Teng
  • Publication number: 20050086269
    Abstract: A base table and related auxiliary table spaces are reorganized concurrently via a database utility. The database utility determines which auxiliary tables are related to the base table and automatically includes their respective auxiliary table in the same invocation of the utility. The reorganization is performed via allocated shadow data sets. The original data sets are switched with the newly built shadow data sets including the LOB shadows.
    Type: Application
    Filed: October 20, 2003
    Publication date: April 21, 2005
    Inventors: Julie Chen, William Franklin, John Garth, Li-Mey Lee, John Lyle, Frances Villafuerte, Jay Yothers
  • Publication number: 20040233584
    Abstract: Increasing the output signal from CPP GMR devices by increasing the read current has not previously been considered an option because it would make the device run too hot. This problem has been overcome by using, for the upper and lower leads, materials that differ significantly in their thermoelectric powers. Thus, when DC is passed through the device, from − to +TEP leads, hot and cold junctions are formed and heat is transferred from the micro-device into the leads, resulting in a net local cooling of the device which enables it to operate at higher power. For a GMR device, this translates to a larger output voltage, making it easier, more sensitive, and more reliable to use.
    Type: Application
    Filed: May 22, 2003
    Publication date: November 25, 2004
    Applicant: Headway Technologies, Inc.
    Inventors: Yue Liu, Kochan Ju, Jei Wei Chang, Julie Chen