Patents by Inventor Joshua Chang

Joshua 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).

  • Publication number: 20240206859
    Abstract: A urine collection assembly includes a container; a funnel removably coupled to the container, the funnel in fluid communication with the container; a first collection chamber in selective communication with the funnel; a valve configured to allow selective communication between the first collection chamber and the funnel; a second collection chamber in selective communication with the funnel; and a lid removably coupleable to the funnel. A saddle may be removably coupleable to the funnel and configured to guide urine into the container.
    Type: Application
    Filed: March 7, 2024
    Publication date: June 27, 2024
    Inventors: David Wallace, Sydney Wallace, Joshua Chang, Mark Naufel
  • Publication number: 20240202613
    Abstract: A method of calculating a set of desired transport routes for a stroke patient comprises selecting a set of destination points, comprising a first stroke center and a second stroke center, generating a set of infarct core growth models for stroke patients along at least a first path from a starting point to the first stroke center followed by an optional trip to the second stroke center, and a second path from the starting point to the second stroke center, varying a set of parameters of the stroke patients, calculating a model of patient outcomes from each origin point, and designating whether the first path or the second path is preferable based on the probabilistic model. A system for displaying a desired transport route for a stroke patient and a method of calculating a preferred location for a mobile treatment unit in a geographic region are also described.
    Type: Application
    Filed: April 29, 2022
    Publication date: June 20, 2024
    Inventors: Joshua Chang, David Paydarfar, Daniel Paydarfar, Peter Mucha
  • Patent number: 11950769
    Abstract: A urine collection assembly includes a container; a funnel removably coupled to the container, the funnel in fluid communication with the container; a first collection chamber in selective communication with the funnel; a valve configured to allow selective communication between the first collection chamber and the funnel; a second collection chamber in selective communication with the funnel; and a lid removably coupleable to the funnel. A saddle may be removably coupleable to the funnel and configured to guide urine into the container.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: April 9, 2024
    Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY
    Inventors: David Wallace, Sydney Wallace, Joshua Chang, Mark Naufel
  • Publication number: 20230123656
    Abstract: A urine collection assembly includes a container; a funnel removably coupled to the container, the funnel in fluid communication with the container; a first collection chamber in selective communication with the funnel; a valve configured to allow selective communication between the first collection chamber and the funnel; a second collection chamber in selective communication with the funnel; and a lid removably coupleable to the funnel. A saddle may be removably coupleable to the funnel and configured to guide urine into the container.
    Type: Application
    Filed: January 29, 2021
    Publication date: April 20, 2023
    Inventors: David Wallace, Sydney Wallace, Joshua Chang, Mark Naufel
  • Publication number: 20220143412
    Abstract: Apparatus and methods for applying a phase-agnostic stimuli are disclosed herein. Certain embodiments include methods and apparatus that are configured to receive a detected signal from a subject and transmit a stimulation signal that is configured to optimize a response signal without regard to the phase of the detected signal.
    Type: Application
    Filed: October 20, 2021
    Publication date: May 12, 2022
    Applicant: Research Development Foundation
    Inventors: David PAYDARFAR, Joshua CHANG, Sara A. HACKETT, Varun K. SRIDHAR
  • Patent number: 10506983
    Abstract: A system is described that observes a signal from a subject of interest, converts the signal to an electrical representation, uses the electrical representation to compute a synthetic control signal, and applies the synthetic control signal to control some aspect of operation of the subject. The procedure used to generate the synthetic control signal involves subjecting the electrical representation of the observed signal to random noise, allowing the extrema of the electrical representation to move, and obtaining a converged solution as the synthetic control signal.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: December 17, 2019
    Assignee: University of Massachusetts
    Inventors: David Paydarfar, Joshua Chang
  • Publication number: 20180192961
    Abstract: A system is described that observes a signal from a subject of interest, converts the signal to an electrical representation, uses the electrical representation to compute a synthetic control signal, and applies the synthetic control signal to control some aspect of operation of the subject. The procedure used to generate the synthetic control signal involves subjecting the electrical representation of the observed signal to random noise, allowing the extrema of the electrical representation to move, and obtaining a converged solution as the synthetic control signal.
    Type: Application
    Filed: September 25, 2017
    Publication date: July 12, 2018
    Inventors: David Paydarfar, Joshua Chang
  • Publication number: 20150292886
    Abstract: A laser beam generating device is provided for generating multiple mutually orthogonal light beams. The device includes a laser light generator that generates at least three output beams. A beamsplitter of the laser light generator has two incident surfaces orientated at forty-five degrees in relation to an optical axis. A first portion of a light from a light source is incident on a first of the two incident surfaces and output as a first output beam in a first direction orthogonal to the optical axis. A second portion of the light is incident on a second of the two incident surfaces and output as a second output beam in a second direction opposite the first direction. The light source is arranged in relation to the beamsplitter such that a third portion of the light bypasses the beamsplitter and forms a third output beam projected parallel to the optical axis.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 15, 2015
    Inventors: James P. Bascom, Joshua Chang, Young Jiang
  • Patent number: D489064
    Type: Grant
    Filed: January 2, 2003
    Date of Patent: April 27, 2004
    Assignee: Hannspree, Inc.
    Inventor: Joshua Chang