Patents by Inventor Sazzadur Chowdhury

Sazzadur Chowdhury 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: 9997425
    Abstract: An integrated circuit includes stacked benzocyclobutene layers and a circuit geometry comprising conductive electric traces and interconnects on and/or extending through the BCB layers. A first said BCB layer formed and partially cured state. A top surface masked with photoresist, and after exposure, etched selectively form through vias at locations corresponding to conductive interconnects of the circuit geometry associated with said first BCB layer. A further mask coating is applied and after exposure, conductive metal is deposited to infill vias and form the electric traces of the circuit geometry. Subsequent BCB layers are then likewise formed, etched masked and coated in the same manner.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: June 12, 2018
    Inventors: Sazzadur Chowdhury, Horst Schmidt
  • Patent number: 9857457
    Abstract: A sensor assembly including one or more capacitive micromachined ultrasonic transducer (CMUT) microarray modules which are provided with a number of individual transducers. The microarray modules are arranged to simulate or orient individual transducers in a hyperbolic paraboloid geometry. The transducers/sensor are arranged in a rectangular or square matrix and are activatable individually, selectively or collectively to emit and received reflected beam signals at a frequency of between about 100 to 170 kHz.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: January 2, 2018
    Assignee: UNIVERSITY OF WINDSOR
    Inventor: Sazzadur Chowdhury
  • Publication number: 20170018456
    Abstract: An integrated circuit includes stacked benzocyclobutene layers and a circuit geometry comprising conductive electric traces and interconnects on and/or extending through the BCB layers. A first said BCB layer formed and partially cured state. A top surface masked with photoresist, and after exposure, etched selectively form through vias at locations corresponding to conductive interconnects of the circuit geometry associated with said first BCB layer. A further mask coating is applied and after exposure, conductive metal is deposited to infill vias and form the electric traces of the circuit geometry. Subsequent BCB layers are then likewise formed, etched masked and coated in the same manner.
    Type: Application
    Filed: July 12, 2016
    Publication date: January 19, 2017
    Inventors: Sazzadur CHOWDHURY, HORST SCHMIDT
  • Publication number: 20160174419
    Abstract: An integrated circuit assembly which includes stacked printed ceramic substrate layers, and incorporates a shielding enclosure extending about the electrical conductor traces and interconnects which form the assembly circuitry. The shielding enclosure is configured to reduce electric and/or magnetic field leakage or interference with the traces and interconnects. The enclosure is provided as a cage about the assembly circuitry, and which is formed as arrays of ground conductors in electrical communication with ground plates.
    Type: Application
    Filed: December 2, 2015
    Publication date: June 16, 2016
    Inventor: Sazzadur CHOWDHURY
  • Patent number: 9364862
    Abstract: A sensor assembly including one or more capacitive micromachined ultrasonic transducer (CMUT) microarray modules which are provided with a number of individual transducers. The microarray modules are arranged to simulate or orient individual transducers in a hyperbolic paraboloid geometry. The transducers/sensor are arranged in a rectangular or square matrix and are activatable individually, selectively or collectively to emit and received reflected beam signals at a frequency of between about 100 to 170 kHz.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: June 14, 2016
    Assignee: UNIVERSITY OF WINDSOR
    Inventor: Sazzadur Chowdhury
  • Publication number: 20160041259
    Abstract: A sensor assembly including one or more capacitive micromachined ultrasonic transducer (CMUT) microarray modules which are provided with a number of individual transducers. The microarray modules are arranged to simulate or orient individual transducers in a hyperbolic paraboloid geometry. The transducers/sensor are arranged in a rectangular or square matrix and are activatable individually, selectively or collectively to emit and received reflected beam signals at a frequency of between about 100 to 170 kHz.
    Type: Application
    Filed: March 12, 2014
    Publication date: February 11, 2016
    Inventor: Sazzadur CHOWDHURY
  • Patent number: 9187316
    Abstract: A sensor assembly including one or more capacitive micromachined ultrasonic transducer (CMUT) microarray modules which are provided with a number of individual transducers. The transducers include silicon device and backing layers joined by a fused benzocyclobutene (BCB) layer which defines the transducer air gap, and which are arranged to simulate or orient individual transducers in a hyperbolic paraboloid geometry. The transducers/sensor are arranged in a matrix and are activatable to emit and receive reflected beam signals at a frequency of between about 100 to 170 kHz.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: November 17, 2015
    Assignee: UNIVERSITY OF WINDSOR
    Inventors: Sazzadur Chowdhury, Aref Bakhtazad
  • Publication number: 20150290678
    Abstract: A sensor assembly including one or more capacitive micromachined ultrasonic transducer (CMUT) microarray modules which are provided with a number of individual transducers. The microarray modules are arranged to simulate or orient individual transducers in a hyperbolic paraboloid geometry. The transducers/sensor are arranged in a rectangular or square matrix and are activatable individually, selectively or collectively to emit and received reflected beam signals at a frequency of between about 100 to 170 kHz.
    Type: Application
    Filed: November 1, 2013
    Publication date: October 15, 2015
    Inventor: Sazzadur Chowdhury
  • Patent number: 9035532
    Abstract: A sensor assembly including one or more capacitive micromachined ultrasonic transducer (CMUT) microarray modules which are provided with a number of individual transducers. The microarray modules are arranged to simulate or orient individual transducers in a hyperbolic paraboloid geometry. The transducers/sensor are arranged in a rectangular or square matrix and are activatable individually, selectively or collectively to emit and received reflected beam signals at a frequency of between about 100 to 170 Hz.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 19, 2015
    Assignee: UNIVERSITY OF WINDSOR
    Inventor: Sazzadur Chowdhury
  • Patent number: 8976061
    Abstract: A radar system (100) is described including a transmitting assembly (10), a receiving assembly (20), a control unit (30) and a signal processing unit (40). The transmitting assembly (10) receives an input signal (31) and transmits an incident radar signal (2). The transmitting assembly (10) includes a Rotman lens (12) having a lens cavity (74), a plurality of beam ports (60), a plurality of array ports (62) and a patch antenna assembly (14). The lens cavity (74) has a lens gap (h) between 10 microns to 120 microns, and preferably 40 microns to 60 microns. The patch antenna assembly (14) includes a plurality of antenna arrays (130) operable to receive a plurality of time-delayed, in-phase signals from the Rotman lens (12) and to transmit the incident radar signal (2) towards a target (4). The receiving assembly (20) receives a reflected radar signal (6) and produces an output signal.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: March 10, 2015
    Inventor: Sazzadur Chowdhury
  • Publication number: 20150044807
    Abstract: A sensor assembly including one or more capacitive micromachined ultrasonic transducer (CMUT) microarray modules which are provided with a number of individual transducers. The transducers include silicon device and backing layers joined by a fused benzocyclobutene (BCB) layer which defines the transducer air gap, and which are arranged to simulate or orient individual transducers in a hyperbolic paraboloid geometry. The transducers/sensor are arranged in a matrix and are activatable to emit and receive reflected beam signals at a frequency of between about 100 to 170 kHz.
    Type: Application
    Filed: July 15, 2014
    Publication date: February 12, 2015
    Inventors: Sazzadur CHOWDHURY, Aref Bakhtazad
  • Publication number: 20140125193
    Abstract: A sensor assembly including one or more capacitive micromachined ultrasonic transducer (CMUT) microarray modules which are provided with a number of individual transducers. The microarray modules are arranged to simulate or orient individual transducers in a hyperbolic paraboloid geometry. The transducers/sensor are arranged in a rectangular or square matrix and are activatable individually, selectively or collectively to emit and received reflected beam signals at a frequency of between about 100 to 170 kHz.
    Type: Application
    Filed: March 14, 2013
    Publication date: May 8, 2014
    Applicant: UNIVERSITY OF WINDSOR
    Inventor: Sazzadur CHOWDHURY
  • Publication number: 20130027240
    Abstract: A radar system (100) is described including a transmitting assembly (10), a receiving assembly (20), a control unit (30) and a signal processing unit (40). The transmitting assembly (10) receives an input signal (31) and transmits an incident radar signal (2). The transmitting assembly (10) includes a Rotman lens (12) having a lens cavity (74), a plurality of beam ports (60), a plurality of array ports (62) and a patch antenna assembly (14). The lens cavity (74) has a lens gap (h) between 10 microns to 120 microns, and preferably 40 microns to 60 microns. The patch antenna assembly (14) includes a plurality of antenna arrays (130) operable to receive a plurality of time-delayed, in-phase signals from the Rotman lens (12) and to transmit the incident radar signal (2) towards a target (4). The receiving assembly (20) receives a reflected radar signal (6) and produces an output signal.
    Type: Application
    Filed: March 3, 2011
    Publication date: January 31, 2013
    Inventor: Sazzadur Chowdhury