Patents by Inventor Robert Chang

Robert Chang 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: 11032018
    Abstract: There is set forth herein, in one embodiment, obtaining with a radiofrequency receiver a combined radiofrequency signal having a first stream combined with a second stream, wherein the first stream has a first power level, and wherein the second stream has a second power level, the first power level of the first stream being greater than the second power level of the second stream, wherein the radiofrequency receiver includes one or more antenna; processing the combined radiofrequency signal to recover a first digital bitstream associated to the first stream; and recovering a digital bitstream associated to the second stream using the first digital bitstream.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: June 8, 2021
    Assignee: PERSPECTA LABS INC.
    Inventors: John C. Koshy, Joseph C. Liberti, Eric C. Beck, Nicholas Chang, Eddie Fung, Nan Muang, Robert A. Zeigler
  • Publication number: 20210146574
    Abstract: A method of plugging channels of a honeycomb body and a honeycomb body including plugged channels. The method includes applying a shear force to a plugging mixture including a plurality of inorganic particles, clay, and a liquid vehicle to alter the viscosity of the plugging mixture from a first viscosity prior to the vibrating to a second viscosity which is less than the first viscosity. A honeycomb body is placed into contact with the plugging mixture such that a portion of the plugging mixture having the second viscosity flows into the plurality of channels. Application of the shear force is stopped or reduced to increase the viscosity of the portion of the plugging mixture in the plurality of channels to greater than the first viscosity.
    Type: Application
    Filed: January 29, 2021
    Publication date: May 20, 2021
    Inventors: Keith Norman Bubb, Theresa Chang, Joseph Henry Citriniti, Kevin Eugene Elliott, Xinyuan Liu, Robert John Locker, Prashanth Abraham Vanniamparambil, Kevin Lee Wasson, Shu Yuan
  • Patent number: 11001647
    Abstract: The invention is related to a method for producing silicone medical devices, in particular, silicone contact lenses, having consistent mechanical properties in a cost-effective manner. The invention is also related to a silicone medical device, especially a soft silicone contact lens.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: May 11, 2021
    Assignee: Alcon Inc.
    Inventors: Frank Chang, Troy Vernon Holland, Xinming Qian, Robert Scott, Joseph Michael Lindacher, Uwe Haken
  • Patent number: 11003773
    Abstract: A method for generating rule recommendation utilized in a creation of malware detection rules is described. Meta-information associated with a plurality of events collected during a malware detection analysis of an object by a cybersecurity system is received and a first plurality of features is selected from the received meta-information. Machine learning (ML) models are applied to each of the first plurality of features to generate a score that represents a level of maliciousness for the feature and thereby a degree of usefulness of the feature in classifying the object as malicious or benign. Thereafter, a second plurality of features is selected as the salient features, which are used in creation of the malware detection rules in controlling subsequent operations of the cybersecurity system. The second plurality of features being lesser in number that the first plurality of features.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: May 11, 2021
    Assignee: FireEye, Inc.
    Inventors: Chunsheng Fang, Wei Quan, Richard Lai, Robert Venal, Benjamin Chang
  • Publication number: 20210115424
    Abstract: Covalently cross-linked pilus polymers displayed on the cell surface of Gram-positive bacteria are assembled by class C sortase enzymes. These pilus-specific transpeptidases located on the bacterial membrane catalyze a two-step protein ligation reaction—first, cleaving the LPXTG motif of one pilin protomer to form an acyl-enzyme intermediate, and second, joining the terminal threonine to the nucleophilic lysine residue residing within the pilin motif of another pilin protomer. Informed by the high-resolution crystal structures of corynebacterial pilus-specific sortase (SrtA) and by developing structural variants of the sortase enzyme whose catalytic pocket has been unmasked by activating mutations, we have developed new reagents capable of forming isopeptide bonds in vitro. The reagents disclosed herein can catalyze ligation of isolated SpaA domains in vitro provide a facile and versatile new platform for protein engineering and bio-conjugation that has major implications for biotechnology.
    Type: Application
    Filed: May 1, 2019
    Publication date: April 22, 2021
    Applicants: The Regents of the University of California, The Board of Regents of The University of Texas System
    Inventors: Robert T. Clubb, Brendan Rayhan Amer, Janine Y. Fu, Scott McConnell, Hung Ton-That, Chungyu Chang
  • Patent number: 10959647
    Abstract: A system and method for utilizing an activity monitoring device that includes, during a set of initial activity sessions, collecting the kinematic data from an activity monitoring device and generating a temporal record of at least one biomechanical signal that is calculated from the kinematic data; analyzing temporal changes in the biomechanical signals during the initial activity sessions and characterizing a fatigue model; and, during a subsequent activity session collecting current kinematic data of a participant and generating at least one current biomechanical signal from the current kinematic data, monitoring the fatigue state through processing the at least one current biomechanical signal according to the fatigue model, and triggering feedback in a user interface based on the fatigue state.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: March 30, 2021
    Assignee: SEISMIC HOLDINGS, INC.
    Inventors: Andrew Robert Chang, Andreas Martin Hauenstein, Daniel Ly, Ray Franklin Cowan, Rebecca Shultz
  • Patent number: 10792411
    Abstract: Provided is an accelerated method for preparing platelet rich plasma (PrP) without centrifugation or filtration. The method comprises contacting a sample of whole blood with an anti-coagulant and an inducer of Rouleaux formation; allowing the mixture to stand thereby depleting the sample of RBCs, and collecting the platelet-rich plasma fraction. The PrP volume obtained by the present method is about 10-60% of the volume of the starting whole blood sample, and contains less than 200,000 RBCs and at least 100,000 platelets per microliter.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: October 6, 2020
    Inventors: Jae-Hyung Robert Chang, Giuseppe Intini
  • Publication number: 20200046263
    Abstract: A system and method for collecting a set of kinematic data streams from an activity tracking system with at least one activity monitoring system that is attached to a user; segmenting at least a subset of the kinematic data streams into a set of segments according to actions of the user; generating a set of biomechanical signals from the kinematic data streams wherein a biomechanical signal characterize a biomechanical property during a segment and includes generating a first integration data set through data integration and baseline error correction across the set of segments of the normalized kinematic data stream and determining at least a first biomechanical signal that is at least partially based on the first integration data set; and applying the set of biomechanical signals.
    Type: Application
    Filed: May 23, 2019
    Publication date: February 13, 2020
    Inventors: Andreas Martin Hauenstein, Ray Franklin Cowan, Andrew Robert Chang
  • Publication number: 20200015713
    Abstract: A system and method are described herein for a sensor device which biomechanically detects in real-time a user's movement state and posture and then provides real-time feedback to the user based on the user's real-time posture. The feedback is provided through immediate sensory feedback through the sensor device (e.g., a sound or vibration) as well as through an avatar within an associated application with which the sensor device communicates. The sensor device detects the user's movement state and posture by capturing data from a tri-axial accelerometer in the sensor device. Streamed data from the accelerometer is normalized to correct for sensor errors as well as variations in sensor placement and orientation. Normalization is based on accelerometer data collected while the user is wearing the device and performing specific actions.
    Type: Application
    Filed: April 26, 2019
    Publication date: January 16, 2020
    Inventors: Andrew Robert Chang, Andreas Martin Hauenstein, Monisha Perkash, C. Charles Wang
  • Publication number: 20200000377
    Abstract: Systems and methods for monitoring posture of a user wearing an exosuit are discussed herein. Exosuits worn by users can monitor several movement factors that characterize the user's movements and posture. The user's posture is identified and analyzed, and feedback is provided to the user based on the analyzed posture.
    Type: Application
    Filed: May 8, 2019
    Publication date: January 2, 2020
    Inventors: Daniel Le Ly, Andrew Robert Chang, Chung-Che Charles Wang
  • Publication number: 20190374161
    Abstract: Systems and methods for detecting and analyzing lifting and bending motions performed by a user wearing an exosuit are discussed herein. Exosuits worn by users can monitor several movement factors that characterize the user's bending and lifting movements. The bend or lift is identified and analyzed, and feedback is provided to the user based on the analysis of the bend or lift.
    Type: Application
    Filed: June 7, 2019
    Publication date: December 12, 2019
    Inventors: Daniel Le Ly, Ray Franklin Cowan, Chung-Che Charles Wang, Andrew Robert Chang
  • Patent number: 10463909
    Abstract: A system and method for using performance signatures can include generating a set of performance features during an activity of the first participant by collecting kinematic data from at least one inertial measurement unit and generating a set of biomechanical signals; combining the set of performance features into the performance signature; generating at least a second performance signature from a set of participants; comparing the performance signature of the first participant to at least the second performance signature; and applying a result of the comparison to an interaction with at least one participant.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: November 5, 2019
    Assignee: SEISMIC HOLDINGS, INC.
    Inventors: Andrew Robert Chang, Chung-Che Charles Wang
  • Publication number: 20190283247
    Abstract: Systems and methods and media for managing biomechanical achievements are provided. An exosuit or any other suitable sensor assembly worn by a user can be utilized by a system to monitor several movement factors that may characterize the user's movement and any changes in the user's movement with a high degree of specificity that may enable various system algorithms and/or models to predict or otherwise determine one or more biomechanical achievements of the user, such as recovery from a particular type of event (e.g., surgery or therapy procedure) and/or distance traveled (e.g., without using any global positioning system capabilities). In addition, an exosuit can provide useful feedback in response to such determinations.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 19, 2019
    Inventors: Andrew Robert Chang, Derek Chang, Daniel Le Ly, Ray Franklin Cowan
  • Publication number: 20190282131
    Abstract: Systems and methods and media for managing biomechanical achievements are provided. An exosuit or any other suitable sensor assembly worn by a user can be utilized by a system to monitor several movement factors that may characterize the user's movement and any changes in the user's movement with a high degree of specificity that may enable various system algorithms and/or models to predict or otherwise determine one or more biomechanical achievements of the user, such as recovery from a particular type of event (e.g., surgery or therapy procedure) and/or distance traveled (e.g., without using any global positioning system capabilities). In addition, an exosuit can provide useful feedback in response to such determinations.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 19, 2019
    Inventors: Andrew Robert Chang, Derek Chang, Daniel Le Ly, Ray Franklin Cowan
  • Publication number: 20190224841
    Abstract: Exosuit systems and methods according to various embodiments are described herein. The exosuit can be used to monitor users for injury, perform injury prevention, and monitor works for productivity.
    Type: Application
    Filed: January 24, 2019
    Publication date: July 25, 2019
    Inventors: Daniel Le Ly, Ray Franklin Cowan, Andrew Robert Chang, Richard Mahoney
  • Patent number: 10314520
    Abstract: A system and method for collecting a set of kinematic data streams from an activity tracking system with at least one activity monitoring system that is attached to a user; segmenting at least a subset of the kinematic data streams into a set of segments according to actions of the user; generating a set of biomechanical signals from the kinematic data streams wherein a biomechanical signal characterize a biomechanical property during a segment and includes generating a first integration data set through data integration and baseline error correction across the set of segments of the normalized kinematic data stream and determining at least a first biomechanical signal that is at least partially based on the first integration data set; and applying the set of biomechanical signals.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: June 11, 2019
    Assignee: SEISMIC HOLDINGS, INC.
    Inventors: Andreas Martin Hauenstein, Ray Franklin Cowan, Andrew Robert Chang
  • Publication number: 20190134293
    Abstract: Provided is an accelerated method for preparing platelet rich plasma (PrP) without centrifugation or filtration. The method comprises contacting a sample of whole blood with an anti-coagulant and an inducer of Rouleaux formation; allowing the mixture to stand thereby depleting the sample of RBCs, and collecting the platelet-rich plasma fraction. The PrP volume obtained by the present method is about 10-60% of the volume of the starting whole blood sample, and contains less than 200,000 RBCs and at least 100,000 platelets per microliter.
    Type: Application
    Filed: May 9, 2017
    Publication date: May 9, 2019
    Inventors: Jae-Hyung Robert CHANG, Giuseppe INTINI
  • Patent number: 10271773
    Abstract: A system and method are described herein for a sensor device which biomechanically detects in real-time a user's movement state and posture and then provides real-time feedback to the user based on the user's real-time posture. The feedback is provided through immediate sensory feedback through the sensor device (e.g., a sound or vibration) as well as through an avatar within an associated application with which the sensor device communicates. The sensor device detects the user's movement state and posture by capturing data from a tri-axial accelerometer in the sensor device. Streamed data from the accelerometer is normalized to correct for sensor errors as well as variations in sensor placement and orientation. Normalization is based on accelerometer data collected while the user is wearing the device and performing specific actions.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: April 30, 2019
    Assignee: SEISMIC HOLDINGS, INC.
    Inventors: Andrew Robert Chang, Monisha Perkash, C. Charles Wang, Andreas Martin Hauenstein
  • Patent number: 10276020
    Abstract: A system and method are described herein for a sensor device which biomechanically detects in real-time a user's movement state and posture and then provides real-time feedback to the user based on the user's real-time posture. The feedback is provided through immediate sensory feedback through the sensor device (e.g., a sound or vibration) as well as through an avatar within an associated application with which the sensor device communicates.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: April 30, 2019
    Assignee: SEISMIC HOLDINGS, INC.
    Inventors: Andrew Robert Chang, Monisha Perkash, Chung-Che Charles Wang, Andreas Martin Hauenstein
  • Patent number: 10258467
    Abstract: A guidewire system may include a guidewire having a relatively stiff proximal section and a relatively flexible distal section joined by a transition region, and a TAVI device slidably disposed on the guidewire. The guidewire may include an expandable element disposed about the transition region. The expandable element may be configured to expand from a collapsed configuration to an expanded configuration. The guidewire may include an expandable element disposed at the distal end. The distal section may be pre-configured to form more than one distal loop. A method of protecting an apex of a left ventricle during a TAVI procedure may include inserting a guidewire into the left ventricle, positioning a transition region adjacent the apex, expanding an expandable element such that the expandable element spans the apex, advancing a TAVI device distally over the guidewire to an aortic valve, and performing a TAVI procedure at the aortic valve.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: April 16, 2019
    Assignee: Boston Scientific Scimed Inc.
    Inventors: Dongming Hou, John Jianhua Chen, Robert Chang, Takashi H. Ino, Benjamin T. Sutton