Patents by Inventor Ayman Ismail
Ayman Ismail 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).
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Patent number: 11852645Abstract: A wash system for use in an in vitro diagnostic immunoanalyzer utilizes a bridge having a linear track to move cuvettes from one incubation ring portion to another incubation ring portion. Washing stations along the linear track provide a magnetic field and fluid washing of cuvette contents independent of the size and motion of one or more incubation rings.Type: GrantFiled: June 22, 2018Date of Patent: December 26, 2023Assignee: Siemens Healthcare Diagnostics Inc.Inventors: Ayman Ismail, Eric Gerolstein, Brian Bolger
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Publication number: 20220033849Abstract: Viral vector production processes and methods of purifying a viral vector from a host cell are provided herein.Type: ApplicationFiled: June 24, 2021Publication date: February 3, 2022Inventors: Mukesh Mayani, Tongyao Liu, Ayman Ismail
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Publication number: 20210238259Abstract: The present disclosure provides Factor IX (FIX) fusion proteins comprising at least one heterologous moiety, such as an XTEN. The present disclosure further discloses methods of making and using the FIX fusion proteins.Type: ApplicationFiled: January 31, 2018Publication date: August 5, 2021Inventors: Arjan VAN DER FLIER, Zhiqian LIU, David R. LIGHT, Ekta Seth CHHABRA, Tongyao LIU, Robert T. PETERS, John KULMAN, Ayman ISMAIL
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Publication number: 20210032616Abstract: The present invention provides Factor IX (FIX) fusion proteins comprising at least one heterologous moiety, such as an XTEN. The present invention further discloses methods of making and using the FIX fusion proteins.Type: ApplicationFiled: July 6, 2020Publication date: February 4, 2021Inventors: Zhiqian LIU, Arjan VAN DER FLIER, David R. LIGHT, Ekta Seth CHHABRA, Tongyao LIU, Robert T. PETERS, John KULMAN, Ayman ISMAIL
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Patent number: 10745680Abstract: The present invention provides Factor IX (FIX) fusion proteins comprising at least one heterologous moiety, such as an XTEN. The present invention further discloses methods of making and using the FIX fusion proteins.Type: GrantFiled: August 3, 2016Date of Patent: August 18, 2020Assignee: Bioverativ Therapeutics Inc.Inventors: Zhiqian Liu, Arjan Van Der Flier, David R. Light, Ekta Seth Chhabra, Tongyao Liu, Robert T. Peters, John Kulman, Ayman Ismail
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Publication number: 20200132707Abstract: A wash system for use in an in vitro diagnostic immunoanalyzer utilizes a bridge having a linear track to move cuvettes from one incubation ring portion to another incubation ring portion. Washing stations along the linear track provide a magnetic field and fluid washing of cuvette contents independent of the size and motion of one or more incubation rings.Type: ApplicationFiled: June 22, 2018Publication date: April 30, 2020Applicant: Siemens Healthcare Diagnostics Inc.Inventors: Ayman Ismail, Eric Gerolstein, Brian Bolger
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Publication number: 20200011857Abstract: An incubation system for use in an in vitro diagnostic analyzer utilizes a fixed base and a rotatable ring that holds reaction cuvettes. Thermal regulation is provided by directly mounting a heating element to the rotatable ring and controlling the temperature using a temperature controller and thermal sensor for detecting the temperature of the ring, either of which may be mounted to the ring.Type: ApplicationFiled: February 20, 2018Publication date: January 9, 2020Applicant: Siemens Healthcare Diagnostics Inc.Inventors: Ayman Ismail, Eric Gerolstein
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Publication number: 20180355341Abstract: The present invention provides Factor IX (FIX) fusion proteins comprising at least one heterologous moiety, such as an XTEN. The present invention further discloses methods of making and using the FIX fusion proteins.Type: ApplicationFiled: August 3, 2016Publication date: December 13, 2018Applicant: Bioverativ Therapeutics Inc.Inventors: Zhiqian LIU, Ajan VAN DER FLIER, David R. LIGHT, Ekta Seth CHHABRA, Tongyao LIU, Robert T. PETERS, John KULMAN, Ayman ISMAIL
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Patent number: 10138802Abstract: Techniques for learning endstop position(s) of an actuator for a wastegate valve include detecting a learn condition and, in response to detecting the learn condition, performing a learn procedure for the actuator endstop position(s). The learn procedure includes commanding the actuator to a desired position past the endstop position corresponding to a fully-closed wastegate valve while rate-limiting a velocity of the actuator. When the difference reaches its maximum allowed value and the velocity falls below a fraction of its rate limit, the endstop position is learned. When the wastegate valve is requested open, the actuator is then controlled using the learned endstop position. Reference stiffness for a fully-closed wastegate valve could be obtained, and subsequent stiffness checks could then be periodically performed and, if less than the reference stiffness, a duty cycle of the actuator could be increased during open-loop control.Type: GrantFiled: April 14, 2015Date of Patent: November 27, 2018Inventors: Ayman Ismail, Brian Rockwell, John R Bucknell, Ethan E Bayer
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Patent number: 9541018Abstract: An engine bank-to-bank airflow balancing technique includes calculating current and offset volumetric efficiencies of the engine and calculating a slope representing (i) a difference between the offset and current volumetric efficiencies and (ii) a difference between offset and current intake camshaft positions. Based on the respective exhaust gas oxygen concentrations, the technique involves calculating a volumetric efficiency correction corresponding to each cylinder bank and based on the slope and the volumetric efficiency corrections, calculating target intake camshaft position shifts. The technique further involves controlling offsets of the intake camshafts based on the target intake camshaft position shifts.Type: GrantFiled: September 11, 2015Date of Patent: January 10, 2017Assignee: FCA US LLCInventors: Ethan E Bayer, Ayman Ismail, David A Lawrence
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Publication number: 20160305312Abstract: Techniques for learning endstop position(s) of an actuator for a wastegate valve include detecting a learn condition and, in response to detecting the learn condition, performing a learn procedure for the actuator endstop position(s). The learn procedure includes commanding the actuator to a desired position past the endstop position corresponding to a fully-closed wastegate valve while rate-limiting a velocity of the actuator. When the difference reaches its maximum allowed value and the velocity falls below a fraction of its rate limit, the endstop position is learned. When the wastegate valve is requested open, the actuator is then controlled using the learned endstop position. Reference stiffness for a fully-closed wastegate valve could be obtained, and subsequent stiffness checks could then be periodically performed and, if less than the reference stiffness, a duty cycle of the actuator could be increased during open-loop control.Type: ApplicationFiled: April 14, 2015Publication date: October 20, 2016Inventors: Ayman Ismail, Brian Rockwell, John R. Bucknell, Ethan E. Bayer
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Publication number: 20160076471Abstract: An engine bank-to-bank airflow balancing technique includes calculating current and offset volumetric efficiencies of the engine and calculating a slope representing (i) a difference between the offset and current volumetric efficiencies and (ii) a difference between offset and current intake camshaft positions. Based on the respective exhaust gas oxygen concentrations, the technique involves calculating a volumetric efficiency correction corresponding to each cylinder bank and based on the slope and the volumetric efficiency corrections, calculating target intake camshaft position shifts. The technique further involves controlling offsets of the intake camshafts based on the target intake camshaft position shifts.Type: ApplicationFiled: September 11, 2015Publication date: March 17, 2016Inventors: Ethan E. Bayer, Ayman Ismail, David A. Lawrence
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Patent number: 9013233Abstract: In a high-performance interface circuit for micro-electromechanical (MEMS) inertial sensors, an excitation signal (used to detect capacitance variation) is used to control the value of an actuation signal bit stream to allow the dynamic range of both actuation and detection paths to be maximized and to prevent folding of high frequency components of the actuation bit stream due to mixing with the excitation signal. In another aspect, the effects of coupling between actuation signals and detection signals may be overcome by performing a disable/reset of at least one of and preferably both of the detection circuitry and the MEMS detection electrodes during actuation signal transitions. In a still further aspect, to get a demodulated signal to have a low DC component, fine phase adjustment may be achieved by configuring filters within the sense and drive paths to have slightly different center frequencies and hence slightly different delays.Type: GrantFiled: September 13, 2011Date of Patent: April 21, 2015Assignee: Si-Ware SystemsInventors: Ahmed Elmallah, Ahmed Elshennawy, Ahmed Shaban, Botros George, Mostafa Elmala, Ayman Ismail, Mostafa Sakr, Ahmed Mokhtar, Ayman Elsayed
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Patent number: 8872683Abstract: Operating capacitive sensors in force feedback mode has many benefits, such as improved bandwidth, and lower sensitivity to process and temperature variation. To overcome, the non-linearity of the voltage-to-force relation in capacitive feedback, a two-level feedback signal is often used. Therefore, a single-bit ?-? modulator represents a practical way to implement capacitive sensors interface circuits. However, high-Q parasitic modes that exist in high-Q sensors (operating in vacuum) cause a stability problem for the ?-? loop, and hence, limit the applicability of ?-? technique to such sensors. A solution is provided that allows stabilizing the ?-? loop, in the presence of high-Q parasitic modes. The solution is applicable to low or high order ?-? based interfaces for capacitive sensors.Type: GrantFiled: February 26, 2014Date of Patent: October 28, 2014Assignee: Si-Ware SystemsInventors: Ayman Ismail, Ahmed Elshennawy, Ahmed Mokhtar, Ayman Elsayed
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Publication number: 20140240156Abstract: Operating capacitive sensors in force feedback mode has many benefits, such as improved bandwidth, and lower sensitivity to process and temperature variation. To overcome, the non-linearity of the voltage-to-force relation in capacitive feedback, a two-level feedback signal is often used. Therefore, a single-bit ?-? modulator represents a practical way to implement capacitive sensors interface circuits. However, high-Q parasitic modes that exist in high-Q sensors (operating in vacuum) cause a stability problem for the ?-? loop, and hence, limit the applicability of ?-? technique to such sensors. A solution is provided that allows stabilizing the ?-? loop, in the presence of high-Q parasitic modes. The solution is applicable to low or high order ?-? based interfaces for capacitive sensors.Type: ApplicationFiled: February 26, 2014Publication date: August 28, 2014Applicant: Si-Ware SystemsInventors: Ayman Ismail, Ahmed Elshennawy, Ahmed Mokhtar, Ayman Elsayed
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Patent number: 8508290Abstract: In a high-performance interface circuit for micro-electromechanical (MEMS) inertial sensors, an excitation signal (used to detect capacitance variation) is used to control the value of an actuation signal bit stream to allow the dynamic range of both actuation and detection paths to be maximized and to prevent folding of high frequency components of the actuation bit stream due to mixing with the excitation signal. In another aspect, the effects of coupling between actuation signals and detection signals may be overcome by performing a disable/reset of at least one of and preferably both of the detection circuitry and the MEMS detection electrodes during actuation signal transitions. In a still further aspect, to get a demodulated signal to have a low DC component, fine phase adjustment may be achieved by configuring filters within the sense and drive paths to have slightly different center frequencies and hence slightly different delays.Type: GrantFiled: September 13, 2011Date of Patent: August 13, 2013Inventors: Ayman Elsayed, Ahmed Elmallah, Ahmed Elshennawy, Ahmed Shaban, Botros George, Mostafa Elmala, Ayman Ismail, Mostafa Sakr, Ahmed Mokhtar
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Patent number: 8476970Abstract: In a high-performance interface circuit for micro-electromechanical (MEMS) inertial sensors, an excitation signal (used to detect capacitance variation) is used to control the value of an actuation signal bit stream to allow the dynamic range of both actuation and detection paths to be maximized and to prevent folding of high frequency components of the actuation bit stream due to mixing with the excitation signal. In another aspect, the effects of coupling between actuation signals and detection signals may be overcome by performing a disable/reset of at least one of and preferably both of the detection circuitry and the MEMS detection electrodes during actuation signal transitions. In a still further aspect, to get a demodulated signal to have a low DC component, fine phase adjustment may be achieved by configuring filters within the sense and drive paths to have slightly different center frequencies and hence slightly different delays.Type: GrantFiled: September 13, 2011Date of Patent: July 2, 2013Inventors: Ahmed Mokhtar, Ahmed Elmallah, Ahmed Elshennawy, Ahmed Shaban, Botros George, Mostafa Elmala, Ayman Ismail, Mostafa Sakr, Ayman Elsayed
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Publication number: 20120235724Abstract: In a high-performance interface circuit for micro-electromechanical (MEMS) inertial sensors, an excitation signal (used to detect capacitance variation) is used to control the value of an actuation signal bit stream to allow the dynamic range of both actuation and detection paths to be maximized and to prevent folding of high frequency components of the actuation bit stream due to mixing with the excitation signal. In another aspect, the effects of coupling between actuation signals and detection signals may be overcome by performing a disable/reset of at least one of and preferably both of the detection circuitry and the MEMS detection electrodes during actuation signal transitions. In a still further aspect, to get a demodulated signal to have a low DC component, fine phase adjustment may be achieved by configuring filters within the sense and drive paths to have slightly different center frequencies and hence slightly different delays.Type: ApplicationFiled: September 13, 2011Publication date: September 20, 2012Inventors: Ahmed Mokhtar, Ahmed Elmallah, Ahmed Elshennawy, Ahmed Shaban, Botros George, Mostafa Elmala, Ayman Ismail, Mostafa Sakr, Ayman Elsayed
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Publication number: 20120235725Abstract: In a high-performance interface circuit for micro-electromechanical (MEMS) inertial sensors, an excitation signal (used to detect capacitance variation) is used to control the value of an actuation signal bit stream to allow the dynamic range of both actuation and detection paths to be maximized and to prevent folding of high frequency components of the actuation bit stream due to mixing with the excitation signal. In another aspect, the effects of coupling between actuation signals and detection signals may be overcome by performing a disable/reset of at least one of and preferably both of the detection circuitry and the MEMS detection electrodes during actuation signal transitions. In a still further aspect, to get a demodulated signal to have a low DC component, fine phase adjustment may be achieved by configuring filters within the sense and drive paths to have slightly different center frequencies and hence slightly different delays.Type: ApplicationFiled: September 13, 2011Publication date: September 20, 2012Inventors: Ahmed Elmallah, Ahmed Elshennawy, Ahmed Shaban, Botros George, Mostafa Elmala, Ayman Ismail, Mostafa Sakr, Ahmed Mokhtar, Ayman Elsayed