Patents by Inventor Dung A. Tran

Dung A. Tran 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: 20170007825
    Abstract: A catheter may include electrodes for transvascular nerve stimulation. The electrodes may be positioned within lumens of the catheter and aligned with apertures in the outer wall of the catheter. The electrodes may produce focused electrical fields for stimulation of one or more nerves. In one embodiment, the catheter may include a set of proximal electrodes and a set of distal electrodes, and the proximal electrodes may stimulate a patient's left phrenic nerve and the distal electrodes may stimulate a patient's right phrenic nerve.
    Type: Application
    Filed: September 22, 2016
    Publication date: January 12, 2017
    Inventors: Viral THAKKAR, Joaquin Andres HOFFER, Bao Dung TRAN, Douglas G. EVANS, John Nash
  • Patent number: 9474897
    Abstract: A catheter may include electrodes for transvascular nerve stimulation. The electrodes may be positioned within lumens of the catheter and aligned with apertures in the outer wall of the catheter. The electrodes may produce focused electrical fields for stimulation of one or more nerves. In one embodiment, the catheter may include a set of proximal electrodes and a set of distal electrodes, and the proximal electrodes may stimulate a patient's left phrenic nerve and the distal electrodes may stimulate a patient's right phrenic nerve.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: October 25, 2016
    Assignee: Simon Fraser University
    Inventors: Viral Thakkar, Joaquin Andres Hoffer, Bao Dung Tran, Douglas G. Evans, John Nash
  • Patent number: 9441442
    Abstract: An apparatus for engaging and moving a ram block. In some embodiments, the apparatus, or ram block changer, includes a support bracket coupled to a blowout preventer and an articulated arm releasably coupled to the ram block. The ram block changer may further include a pivot coupling assembly having a first axis of rotation. The pivot coupling assembly extends through the support bracket and the articulated arm, wherein the articulated arm is rotatable about the first axis of rotation relative to the support bracket. The articulated arm may include a first member receiving the pivot coupling assembly therethrough, a second member coupled to the ram block, and a second pivot coupling assembly having a second axis of rotation spaced apart from the first axis of rotation and extending through the first and second members. The second member is rotatable about the second axis of rotation relative to the first member.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: September 13, 2016
    Assignee: National Oilwell Varco, L.P.
    Inventors: Tan Le, Son Nguyen, Dung Tran, Scott Lee
  • Publication number: 20160231549
    Abstract: A compressive imaging system includes an illumination system arranged to illuminate an object of interest with illumination light, and a detection system configured to detect at least a portion of the illumination light after being at least one of reflected from, scattered from, or transmitted through the object of interest or to detect fluorescent light from the object of interest and to provide an imaging signal. The compressive imaging system further includes an image processing system configured to communicate with the detection system to receive the imaging signal. The illumination light from the illumination system comprises a plurality of light pulses such that each light pulse has a preselected spectrum that is distinguishable from spectra of all other pulses. The image processing system is configured to form an image of the object of interest using information concerning the preselected spectra of the plurality of light pulses.
    Type: Application
    Filed: February 8, 2016
    Publication date: August 11, 2016
    Applicant: The Johns Hopkins University
    Inventors: Bryan T. BOSWORTH, Mark A. FOSTER, Jasper R. STROUD, Trac TRAN, Sang CHIN, Dung TRAN
  • Publication number: 20160220822
    Abstract: This disclosure describes, among other embodiments, systems and related methods for selecting electrode combinations to be used during nerve pacing procedures. A first set of electrode combinations of a nerve pacing system, such as a phrenic nerve pacing system for diaphragm activation, may be mapped (or tested) to determine the location of the electrode combinations relative to a target nerve. Once the general location of the target nerve is known, a more localized second set of electrode combinations may be tested to determine the most suitable electrode combinations for nerve stimulation. At various stages of the mapping process, electrode combinations that are non-optimal may be discarded as candidates for use in a nerve pacing procedure. The systems and methods described herein may allow for the selection of electrode combinations that are most suitable for stimulation of the left and right phrenic nerves during diaphragm pacing.
    Type: Application
    Filed: April 11, 2016
    Publication date: August 4, 2016
    Inventors: Joaquin Andres HOFFER, Gautam SADARANGANI, Marc Andre NOLETTE, Viral THAKKAR, Bao Dung TRAN
  • Publication number: 20160146490
    Abstract: The humidifier has an upper tank and a lower reservoir. A liquid level switch in the lower reservoir works in conjunction with a valve in a water passage between the upper tank and the lower reservoir in order to provide an automated flow of water to the lower reservoir during operation of the humidifier. The upper tank is unsealed, such that air in the upper tank may equalize with an ambient air pressure. The humidifier can be top-filled allowing that the upper tank to be permanently affixed to the base of the humidifier.
    Type: Application
    Filed: November 24, 2015
    Publication date: May 26, 2016
    Inventors: Joseph McDonnell, Dung Tran
  • Patent number: 9333363
    Abstract: This disclosure describes, among other embodiments, systems and related methods for selecting electrode combinations to be used during nerve pacing procedures. A first set of electrode combinations of a nerve pacing system, such as a phrenic nerve pacing system for diaphragm activation, may be mapped (or tested) to determine the location of the electrode combinations relative to a target nerve. Once the general location of the target nerve is known, a more localized second set of electrode combinations may be tested to determine the most suitable electrode combinations for nerve stimulation. At various stages of the mapping process, electrode combinations that are non-optimal may be discarded as candidates for use in a nerve pacing procedure. The systems and methods described herein may allow for the selection of electrode combinations that are most suitable for stimulation of the left and right phrenic nerves during diaphragm pacing.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: May 10, 2016
    Assignee: Simon Fraser University
    Inventors: Joaquin Andres Hoffer, Gautam Sadarangani, Marc Andre Nolette, Viral Thakkar, Bao Dung Tran
  • Publication number: 20160101280
    Abstract: A catheter may include electrodes for transvascular nerve stimulation. The electrodes may be positioned within lumens of the catheter and aligned with apertures in the outer wall of the catheter. The electrodes may produce focused electrical fields for stimulation of one or more nerves. In one embodiment, the catheter may include a set of proximal electrodes and a set of distal electrodes, and the proximal electrodes may stimulate a patient's left phrenic nerve and the distal electrodes may stimulate a patient's right phrenic nerve.
    Type: Application
    Filed: December 15, 2015
    Publication date: April 14, 2016
    Inventors: Viral THAKKAR, Joaquin Andres HOFFER, Bao Dung TRAN, Douglas G. EVANS, John Nash
  • Patent number: 9242088
    Abstract: A catheter may include electrodes for transvascular nerve stimulation. The electrodes may be positioned within lumens of the catheter and aligned with apertures in the outer wall of the catheter. The electrodes may produce focused electrical fields for stimulation of one or more nerves. In one embodiment, the catheter may include a set of proximal electrodes and a set of distal electrodes, and the proximal electrodes may stimulate a patient's left phrenic nerve and the distal electrodes may stimulate a patient's right phrenic nerve.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: January 26, 2016
    Assignee: Simon Fraser University
    Inventors: Viral Thakkar, Joaquin Andres Hoffer, Bao Dung Tran, Douglas G. Evans, John Nash, Steven Campbell Reynolds
  • Patent number: 9210983
    Abstract: A central body, preferably circular or rotund, has a plurality of elongated arms radiating out from it. Each arm includes a rigid blade end that defines a profile that operationally fits over a fingernail at an angle of incidence for masking an area of the fingernail during painting, or for scoring semi-hardened paint and scraping off excess paint. Angle of incidence is preferably acute, obtuse or right. Each blade end preferably operationally fits over a uniquely corresponding relatively small range of fingernail sizes. The end blades are disposed in order in a direction around the body, the order being progressively larger range sizes. A mark on each end blade is used for aligning the end blade with a longitudinal axis of a fingernail.
    Type: Grant
    Filed: June 23, 2007
    Date of Patent: December 15, 2015
    Inventor: Christine Dung Tran
  • Publication number: 20150202448
    Abstract: This disclosure describes, among other embodiments, systems and related methods for selecting electrode combinations to be used during nerve pacing procedures. A first set of electrode combinations of a nerve pacing system, such as a phrenic nerve pacing system for diaphragm activation, may be mapped (or tested) to determine the location of the electrode combinations relative to a target nerve. Once the general location of the target nerve is known, a more localized second set of electrode combinations may be tested to determine the most suitable electrode combinations for nerve stimulation. At various stages of the mapping process, electrode combinations that are non-optimal may be discarded as candidates for use in a nerve pacing procedure. The systems and methods described herein may allow for the selection of electrode combinations that are most suitable for stimulation of the left and right phrenic nerves during diaphragm pacing.
    Type: Application
    Filed: January 20, 2015
    Publication date: July 23, 2015
    Inventors: Joaquin Andres HOFFER, Gautam SADARANGANI, Marc Andre NOLETTE, Viral THAKKAR, Bao Dung TRAN
  • Publication number: 20150148877
    Abstract: A catheter may include electrodes for transvascular nerve stimulation. The electrodes may be positioned within lumens of the catheter and aligned with apertures in the outer wall of the catheter. The electrodes may produce focused electrical fields for stimulation of one or more nerves. In one embodiment, the catheter may include a set of proximal electrodes and a set of distal electrodes, and the proximal electrodes may stimulate a patient's left phrenic nerve and the distal electrodes may stimulate a patient's right phrenic nerve.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 28, 2015
    Inventors: Viral THAKKAR, Joaquin Andres HOFFER, Bao Dung TRAN, Douglas G. EVANS, John NASH, Steven Campbell REYNOLDS
  • Publication number: 20150045810
    Abstract: The invention, in one aspect, relates to an intravascular electrode system. The system comprises one or more electrodes supported on an elongated resiliently flexible support member, and the support member may be used to introduce the electrodes into a blood vessel. As the support member is introduced into the blood vessel the support member bends to follow the path of the blood vessel.
    Type: Application
    Filed: March 4, 2013
    Publication date: February 12, 2015
    Inventors: Joaquin Andres Hoffer, Marc-Andre Nolette, Viral Thakkar, Bao Dung Tran
  • Publication number: 20140209320
    Abstract: An apparatus for engaging and moving a ram block. In some embodiments, the apparatus, or ram block changer, includes a support bracket coupled to a blowout preventer and an articulated arm releasably coupled to the ram block. The ram block changer may further include a pivot coupling assembly having a first axis of rotation. The pivot coupling assembly extends through the support bracket and the articulated arm, wherein the articulated arm is rotatable about the first axis of rotation relative to the support bracket. The articulated arm may include a first member receiving the pivot coupling assembly therethrough, a second member coupled to the ram block, and a second pivot coupling assembly having a second axis of rotation spaced apart from the first axis of rotation and extending through the first and second members. The second member is rotatable about the second axis of rotation relative to the first member.
    Type: Application
    Filed: April 2, 2014
    Publication date: July 31, 2014
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventors: Tan LE, Son NGUYEN, Dung TRAN, Scott LEE
  • Patent number: 8720476
    Abstract: An apparatus for engaging and moving a ram block. In some embodiments, the apparatus, or ram block changer, includes a support bracket coupled to a blowout preventer and an articulated arm releasably coupled to the ram block. The ram block changer may further include a pivot coupling assembly having a first axis of rotation. The pivot coupling assembly extends through the support bracket and the articulated arm, wherein the articulated arm is rotatable about the first axis of rotation relative to the support bracket. The articulated arm may include a first member receiving the pivot coupling assembly therethrough, a second member coupled to the ram block, and a second pivot coupling assembly having a second axis of rotation spaced apart from the first axis of rotation and extending through the first and second members. The second member is rotatable about the second axis of rotation relative to the first member.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: May 13, 2014
    Assignee: National Oilwell Varco, L.P.
    Inventors: Tan Lee, Son Nguyen, Dung Tran, Scott Lee
  • Patent number: 8409632
    Abstract: Disclosed herein are a product containing an extract from Zanthoxylum avicennae (Lam.) DC. and a process for preparing the same. Also disclosed herein are a pharmaceutical composition including the aforesaid product containing the extract from Zanthoxylum avicennae (Lam.) DC., a method of treating a cancer in a subject via the aforementioned pharmaceutical composition, and a method of inhibiting tumor/cancer cells by virtue of the aforesaid product containing the extract from Zanthoxylum avicennae (Lam.) DC.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: April 2, 2013
    Assignee: China Medical University
    Inventors: Chih-Yang Huang, Duc-Dung Tran, Jer-Yuh Liu
  • Patent number: 8272046
    Abstract: Methods and apparatus for applying a single virtual private network (VPN) address to tunnels or connections associated with different access interfaces are disclosed. In one embodiment, a method includes establishing a first tunnel between a node and a VPN server. The first tunnel has a first address. The method also includes assigning a VPN address to the first tunnel, as well as establishing a second tunnel between the node and the VPN server. The second tunnel has a second address. The VPN address is assigned to the second tunnel, and VPN address is accessed by both the first address and the second address.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: September 18, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Srinath Gundavelli, Paulina Dung Tran, Kent Leung
  • Patent number: D645206
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: September 13, 2011
    Inventor: Christine Dung Tran
  • Patent number: D645207
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: September 13, 2011
    Inventor: Christine Dung Tran
  • Patent number: D645208
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: September 13, 2011
    Inventor: Christine Dung Tran