Patents by Inventor E. DU

E. DU 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: 20230211339
    Abstract: An exemplary mobile impedance-based flow cytometer is developed for the diagnosis of sickle cell disease. The mobile cytometer may be controlled by a computer (e.g., smartphone) application. Calibration of the portable device may be performed using a component of known impedance value. With the developed portable flow cytometer, analysis may be performed on two sickle cell samples and a healthy cell sample. The acquired results may subsequently be analyzed to extract single-cell level impedance information as well as statistics of different cell conditions. Significant differences in cell impedance signals may be observed between sickle cells and normal cells, as well as between sickle cells under hypoxia and normoxia conditions.
    Type: Application
    Filed: March 7, 2023
    Publication date: July 6, 2023
    Inventors: E Du, Darryl Dieujuste, Jia Liu, Yuhao Qiang
  • Publication number: 20230211340
    Abstract: An exemplary mobile impedance-based flow cytometer is developed for the diagnosis of sickle cell disease. The mobile cytometer may be controlled by a computer (e.g., smartphone) application. Calibration of the portable device may be performed using a component of known impedance value. With the developed portable flow cytometer, analysis may be performed on two sickle cell samples and a healthy cell sample. The acquired results may subsequently be analyzed to extract single-cell level impedance information as well as statistics of different cell conditions. Significant differences in cell impedance signals may be observed between sickle cells and normal cells, as well as between sickle cells under hypoxia and normoxia conditions.
    Type: Application
    Filed: March 7, 2023
    Publication date: July 6, 2023
    Inventors: E Du, Darryl Dieujuste, Jia Liu, Yuhao Qiang
  • Patent number: 11618019
    Abstract: An exemplary mobile impedance-based flow cytometer is developed for the diagnosis of sickle cell disease. The mobile cytometer may be controlled by a computer (e.g., smartphone) application. Calibration of the portable device may be performed using a component of known impedance value. With the developed portable flow cytometer, analysis may be performed on two sickle cell samples and a healthy cell sample. The acquired results may subsequently be analyzed to extract single-cell level impedance information as well as statistics of different cell conditions. Significant differences in cell impedance signals may be observed between sickle cells and normal cells, as well as between sickle cells under hypoxia and normoxia conditions.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: April 4, 2023
    Assignee: Florida Atlantic University Board of Trustees
    Inventors: E Du, Darryl Dieujuste, Jia Liu, Yuhao Qiang
  • Publication number: 20220003731
    Abstract: An exemplary portable automated device is developed for in vitro testing of blood vascular occlusion as a result of sickle cell disease. The portable automated device may be controlled by a computer (e.g., smartphone) application. Calibration of the portable device may be performed using a component of known impedance value. With the developed portable automated device, analysis may be performed on sickle cell samples on a microfluidic platform that mimics the structure of human capillaries. Significant differences in cell impedance signals may be observed between sickle cells and normal cells, as well as between sickle cells under hypoxia and normoxia conditions.
    Type: Application
    Filed: May 6, 2021
    Publication date: January 6, 2022
    Inventors: E DU, Yuhao QIANG, Darryl DIEUJUSTE, Jia LIU
  • Patent number: 11114045
    Abstract: A method and system for enhancing the visibility of screen images in a high ambient light condition or environment by processing the object images comprising a first stage to increase the brightness of transmission light from the back-light of an LCD screen and a second stage to further enhance the brightness as well as the contrast of the images to be displayed.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: September 7, 2021
    Assignee: JL MARINE SYSTEMS, INC.
    Inventors: Stephen E. du Buis, David Bailey
  • Publication number: 20200171494
    Abstract: An exemplary mobile impedance-based flow cytometer is developed for the diagnosis of sickle cell disease. The mobile cytometer may be controlled by a computer (e.g., smartphone) application. Calibration of the portable device may be performed using a component of known impedance value. With the developed portable flow cytometer, analysis may be performed on two sickle cell samples and a healthy cell sample. The acquired results may subsequently be analyzed to extract single-cell level impedance information as well as statistics of different cell conditions. Significant differences in cell impedance signals may be observed between sickle cells and normal cells, as well as between sickle cells under hypoxia and normoxia conditions.
    Type: Application
    Filed: September 27, 2019
    Publication date: June 4, 2020
    Inventors: E Du, Darryl Dieujuste, Jia Liu, Yuhao Qiang
  • Patent number: 10621925
    Abstract: A method and system for enhancing the visibility of screen images in a high ambient light condition or environment by processing the object images comprising a first stage to increase the brightness of transmission light from the back-light of an LCD screen and a second stage to further enhance the brightness as well as the contrast of the images to be displayed.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: April 14, 2020
    Assignee: JL Marine Systems, Inc.
    Inventors: Stephen E. du Buis, David Bailey
  • Publication number: 20180267021
    Abstract: The invention in some aspects relates to high throughput methods and devices for evaluating mechanical, morphological, kinetic, rheological or hematological properties of cells, such as blood cells under regulated gas conditions. In some aspects, the invention relates to methods and devices for diagnosing and/or characterizing a condition or disease in a subject by measuring a property of a cell from the subject, under controlled gas conditions.
    Type: Application
    Filed: December 4, 2015
    Publication date: September 20, 2018
    Applicants: Carnegie Mellon University, Massachusetts Institute of Technology
    Inventors: Subra SURESH, E. DU, Monica DIEZ SILVA, Ming DAO
  • Patent number: 9644097
    Abstract: A polymeric stabilizer is produced by copolymerizing an unsaturated polyether with an unsaturated low molecular weight monomer in a controlled radical polymerization. The polymeric stabilizer is useful for producing polymer polyol products via a mechanical dispersion process or an in situ polymerization process.
    Type: Grant
    Filed: April 22, 2012
    Date of Patent: May 9, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Lionel Petton, Hanno R. Van der Wal, Freddy Van Damme, Edwin Mes, Fillip E. Du Prez, Sam Verbrugghe, Jean-Paul Masy
  • Publication number: 20140058037
    Abstract: A polymeric stabilizer is produced by copolymerizing an unsaturated polyether with an unsaturated low molecular weight monomer in a controlled radical polymerization. The polymeric stabilizer is useful for producing polymer polyol products via a mechanical dispersion process or an in situ polymerization process.
    Type: Application
    Filed: April 22, 2012
    Publication date: February 27, 2014
    Inventors: Lionel Petton, Hanno R. Van der Wal, Freddy Van Damme, Edwin Mes, Fillip E. Du Prez, Sam Verbrugghe, Jean-Paul Masy
  • Patent number: 8167827
    Abstract: The combined floor mat and continuous passive motion device may include a continuous passive motion device and a single and unitary floor mat preferably in continuous frictional contact with the ground surface. The floor mat may be laid end-to-end with the continuous passive motion device so that the proximal end of the continuous passive motion device is adjustably connected to a distal end of the floor mat. The continuous passive motion device may further include a mechanism for preventing the continuous passive motion device from shifting during the exercise so that the floor mat remains longitudinally aligned with the continuous passive motion device and continuously disposed at a flat and planar arrangement on the ground surface.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: May 1, 2012
    Inventor: Dan E Du Bose
  • Patent number: 7147246
    Abstract: Method for controlling deployment of an airbag into a passenger compartment of a vehicle including detecting a position of an occupant whose forward-facing surface will be the surface which interacts with the airbag upon its deployment, determining a desired amount of gas within the airbag during inflation of the airbag based at least in part on the detected position of the occupant, and adjusting the amount of gas within the airbag during inflation of the airbag to provide the airbag with the desired amount of gas during its inflation. Adjustment of the amount of gas within the airbag may entail varying the amount of gas being directed into the airbag based on the morphology of the occupant (inflow control) and/or controlling the outflow of gas from the airbag based on the morphology of the occupant (outflow control).
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: December 12, 2006
    Assignee: Automotive Technologies International, Inc.
    Inventors: David S. Breed, Wilbur E. Du Vall, Wendell C. Johnson
  • Patent number: 6958451
    Abstract: Arrangement and method for determining weight of an occupying item in a seat including one or more weight sensors arranged to obtain a measurement of the force applied to the seat, a forcing function determination arrangement for measuring a forcing function of the seat and a processor coupled to the weight sensor(s) and forcing function determination arrangement for receiving the measurement of the force applied to the weight sensor(s) and the measurement of the forcing function from the forcing function measurement system and determining the weight of the occupying item based thereon. The forcing function determination arrangement may include an accelerometer and measures effects on the seat caused by load of a seatbelt associated with the seat and/or effects on the seat of road roughness, steering maneuvers, and a vehicle suspension system.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: October 25, 2005
    Assignee: Automotive Technologies International, Inc.
    Inventors: David S. Breed, Wilbur E. Du Vall, Wendell C. Johnson
  • Patent number: 6733036
    Abstract: Automotive electronic safety network including devices such as a crash sensor and an airbag module and at least one electrical bus each coupling at least a portion of the devices and conveying power and/or information to or from the devices coupled to the bus. Each crash sensor generates signals relating to an impact of the vehicle and each airbag module includes a module housing, an airbag associated with the housing, an inflator assembly arranged in the housing for inflating the airbag and an electronic controller arranged in or adjacent the housing and coupled to the bus. The controller controls inflation of the airbag by the inflator assembly in consideration of the signals generated by the crash sensor(s). Each crash sensor is arranged separate and at a location apart from the housing of each airbag module. The bus can consist of a single pair of wires.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: May 11, 2004
    Assignee: Automotive Technologies International, Inc.
    Inventors: David S. Breed, Wilbur E. Du Vall, Wendell C. Johnson
  • Publication number: 20030056997
    Abstract: Arrangement and method for determining weight of an occupying item in a seat including one or more weight sensors arranged to obtain a measurement of the force applied to the seat, a forcing function determination arrangement for measuring a forcing function of the seat and a processor coupled to the weight sensor(s) and forcing function determination arrangement for receiving the measurement of the force applied to the weight sensor(s) and the measurement of the forcing function from the forcing function measurement system and determining the weight of the occupying item based thereon. The forcing function determination arrangement may include an accelerometer and measures effects on the seat caused by load of a seatbelt associated with the seat and/or effects on the seat of road roughness, steering maneuvers, and a vehicle suspension system.
    Type: Application
    Filed: June 19, 2002
    Publication date: March 27, 2003
    Inventors: David S. Breed, Wilbur E. Du Vall, Wendell C. Johnson
  • Publication number: 20010038698
    Abstract: Arrangement and method for controlling audio reception by occupants of a vehicle in which the position of any occupants is determined and the entertainment system controlled to provide specific sound for the occupants based on the determined positions of the occupants. Sound generating components of the entertainment system are automatically adjustable based on the determined position of the occupants. A hypersonic sound generating system may be used wherein ultrasonic frequency generators generate ultrasonic waves which mix with ultrasonic waves generated by another ultrasonic frequency generator to thereby cause the creation of new audio frequencies in an area determined based on the position of the occupants. In addition, the presence and direction of unwanted noise may be detected and sound created to cancel the unwanted noise in the area including the determined positions of any occupants.
    Type: Application
    Filed: April 20, 2001
    Publication date: November 8, 2001
    Inventors: David S. Breed, Wilbur E. Du Vall, Wendell C. Johnson
  • Publication number: 20010020777
    Abstract: Methods for controlling a vehicle system in which radiation is directed from a transducer into the passenger compartment and is reflected off or modified by an object in the passenger compartment and received by the same or a different transducer. When ultrasonic waves are used, one or more techniques are used to compensate for thermal gradients in the passenger compartment and/or enable the use of a single transducer to send and receive waves, for example, a tubular mounting structure for the transducers, electronic reduction of ringing of the transducer, mechanical damping of the transducer cone, shaped horns, grills and reflectors for the output of the transducers to precisely control the beam pattern, a logarithmic compression amplifier, a temperature compensation method based on change in transducer properties with temperature and/or a dual level network, one level for categorization and the second for occupant position sensing.
    Type: Application
    Filed: April 6, 2001
    Publication date: September 13, 2001
    Inventors: Wendell C. Johnson, Wilbur E. Du Vall, David S. Breed
  • Patent number: 4613845
    Abstract: An apparatus for preventing the operation of machinery such as a motor vehicle by an operator who is intoxicated, such apparatus including an alcohol sensor and a proximity sensor located in the control area of the machinery.
    Type: Grant
    Filed: March 24, 1983
    Date of Patent: September 23, 1986
    Inventor: Donald E. Du Bois
  • Patent number: 4343388
    Abstract: Diode chips (44) are cut from a p-n sheet-diffused semiconductor wafer (41). Instead of having conventional rectangular shapes, the chips have a rhomboidal shape. This makes the shape of the chips asymmetric in that one surface (46) of each chip becomes a distinguishable mirror image of its other surface (47). The direction of the p-n junction in the wafer is oriented with respect to the shape of the chips to be cut to place the same conductivity type region adjacent to the same rhomboidal shape of the surface. The shape of the chips (44) thereby aids apparatus (59) to sort the chips into two groups, each group consisting of chips of the same polarity or orientation of their p-n junctions with respect to a common support plane. The apparatus (59) includes a feed track (60) leading to a fork (61) in the track.
    Type: Grant
    Filed: August 21, 1980
    Date of Patent: August 10, 1982
    Assignee: Western Electric Co., Inc.
    Inventors: Loring E. Du Bois, Lawrence D. Simpson
  • Patent number: 4290957
    Abstract: Dihydrochalcones of the formula ##STR1## are disclosed wherein X is H or OH and R is a lower alkyl. These materials are useful as sweeteners for edibles. A process for preparing these compounds using a novel intermediate is disclosed as are acid and base neutralization products of the subject dihydrochalcones.
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: September 22, 1981
    Assignee: Dynapol
    Inventors: Grant E. Du Bois, Rebecca A. G. Stephenson, Guy A. Crosby