Patents by Inventor Bahman LASHKARI
Bahman LASHKARI 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: 11877828Abstract: Systems and methods are disclosed that facilitate the reduction of both radio frequency (RF) noise and photoacoustic artefacts in differential photoacoustic radar imaging through a multi-step electrical and optical domain calibration method. An example two-step calibration method involves reducing RF image noise via an initial calibration step that involves the control of the relative amplitudes and phases of electrical driving modulation waveforms, while a second calibration step involves the differential suppression of photoacoustic artefact signals via tuning, in the optical domain, of the relative intensity the optical beams that are delivered to the sample. Another example embodiment involves the use of the standard deviation of the unwrapped phase that is obtained, after performing frequency-domain cross-correlation and an inverse transform to the time domain, to improve the amplitude signal that is employed to generate a differential photoacoustic radar image.Type: GrantFiled: December 20, 2019Date of Patent: January 23, 2024Assignees: SUNNYBROOK RESEARCH INSTITUTE, THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTOInventors: Andreas Mandelis, Sung Soo Choi, Bahman Lashkari, Brian Courtney, Stuart Foster
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Patent number: 11619426Abstract: Disclosed is an adsorption-based heat pump useful for refrigeration and cooling/heating for applications such as HVACs and chillers. Adsorption is a surface phenomenon where a solid substance (adsorbent) attracts molecules of a gas or solution (refrigerant or adsorbate) on its surface. The latent heat of the adsorbate provides the heating/cooling effect. The novel adsorption heat pump enhances heat and/or mass transfer to and from the adsorbate. One embodiment comprises at least one evaporator, at least one desorber (adsorbent heating apparatus), at least one adsorbent cooling apparatus and at least one condenser. The embodiment employs different techniques to enhance heat and/or mass transfer.Type: GrantFiled: March 7, 2019Date of Patent: April 4, 2023Assignee: Enersion Inc.Inventors: Hanif Montazeri, Jingyuan Hou, Arshan Singh, Bahman Lashkari, Vignesh Krishnamurthy
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Publication number: 20220104709Abstract: Systems and methods are disclosed that facilitate the reduction of both radio frequency (RF) noise and photoacoustic artefacts in differential photoacoustic radar imaging through a multi-step electrical and optical domain calibration method. An example two-step calibration method involves reducing RF image noise via an initial calibration step that involves the control of the relative amplitudes and phases of electrical driving modulation waveforms, while a second calibration step involves the differential suppression of photoacoustic artefact signals via tuning, in the optical domain, of the relative intensity the optical beams that are delivered to the sample. Another example embodiment involves the use of the standard deviation of the unwrapped phase that is obtained, after performing frequency-domain cross-correlation and an inverse transform to the time domain, to improve the amplitude signal that is employed to generate a differential photoacoustic radar image.Type: ApplicationFiled: December 20, 2019Publication date: April 7, 2022Inventors: ANDREAS MANDELIS, SUNG SOO CHOI, BAHMAN LASHKARI, BRIAN COURTNEY, STUART FOSTER
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Publication number: 20210364197Abstract: Disclosed is an adsorption-based heat pump useful for refrigeration and cooling/heating for applications such as HVACs and chillers. Adsorption is a surface phenomenon where a solid substance (adsorbent) attracts molecules of a gas or solution (refrigerant or adsorbate) on its surface. The latent heat of the adsorbate provides the heating/cooling effect. The novel adsorption heat pump enhances heat and/or mass transfer to and from the adsorbate. One embodiment comprises at least one evaporator, at least one desorber (adsorbent heating apparatus), at least one adsorbent cooling apparatus and at least one condenser. The embodiment employs different techniques to enhance heat and/or mass transfer.Type: ApplicationFiled: August 5, 2021Publication date: November 25, 2021Applicant: Enersion Inc.Inventors: Hanif Montazeri, Arshan Singh, Bahman Lashkari, Vignesh Krishnamurthy
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Publication number: 20210048232Abstract: Disclosed is an adsorption-based heat pump useful for refrigeration and cooling/heating for applications such as HVACs and chillers. Adsorption is a surface phenomenon where a solid substance (adsorbent) attracts molecules of a gas or solution (refrigerant or adsorbate) on its surface. The latent heat of the adsorbate provides the heating/cooling effect. The novel adsorption heat pump enhances heat and/or mass transfer to and from the adsorbate. One embodiment comprises at least one evaporator, at least one desorber (adsorbent heating apparatus), at least one adsorbent cooling apparatus and at least one condenser. The embodiment employs different techniques to enhance heat and/or mass transfer.Type: ApplicationFiled: March 7, 2019Publication date: February 18, 2021Applicant: Enersion Inc.Inventors: Hanif Montazeri, Jingyuan Hou, Arshan Singh, Bahman Lashkari, Vignesh Krishnamurthy
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Publication number: 20190316816Abstract: Disclosed is a cold storage container able to keep its contents cool for long periods without using electricity by using the phenomenon of adsorption. An adsorbent material placed in a conductive material above an insulated vacuum chamber adsorbs water vapor from the melting ice surrounding or above a cold chamber where contents are kept cold. This generates continuous evaporation which cools the water and therefore the contents of the cold chamber.Type: ApplicationFiled: April 12, 2019Publication date: October 17, 2019Applicant: Enersion Inc.Inventors: Hanif Montazeri, Jingyuan Hou, Arshan Singh, Bahman Lashkari, Vignesh Krishnamurthy
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Patent number: 10092192Abstract: The present disclosure provides systems and methods for imaging based on the generation and use of mismatched coded excitation signals. Cross-correlation properties of the received signal reveal the location and/or timing and/or properties of the source. The use of mismatched signals enables spatial and/or temporal and/or functional encoding of the transmitted signals. In some embodiments, high-speed imaging may be performed by employing mismatched codes for spatial and/or temporal encoding, and by employing a subset of transducer elements as transmitters, and another subset of elements as receivers. Various example embodiments of different types of mismatched codes are provided, including codes that employ multiple frequency chirps, codes that employ concatenated multi-frequency binary phase-coded waveforms, and chirped binary phase-coded waveforms.Type: GrantFiled: December 28, 2015Date of Patent: October 9, 2018Inventors: Bahman Lashkari, Andreas Mandelis, Kaicheng Zhang
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Publication number: 20160213258Abstract: The present disclosure provides systems and methods for imaging based on the generation and use of mismatched coded excitation signals. Cross-correlation properties of the received signal reveal the location and/or timing and/or properties of the source. The use of mismatched signals enables spatial and/or temporal and/or functional encoding of the transmitted signals. In some embodiments, high-speed imaging may be performed by employing mismatched codes for spatial and/or temporal encoding, and by employing a subset of transducer elements as transmitters, and another subset of elements as receivers. Various example embodiments of different types of mismatched codes are provided, including codes that employ multiple frequency chirps, codes that employ concatenated multi-frequency binary phase-coded waveforms, and chirped binary phase-coded waveforms.Type: ApplicationFiled: December 28, 2015Publication date: July 28, 2016Inventors: Bahman Lashkari, Andreas Mandelis, Kaicheng Zhang
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Patent number: 9220415Abstract: Systems and methods of frequency-domain photoacoustic imaging are provided utilizing an ultrasonic phased array probe and intensity modulated optical excitation with coding to improve signal-to-noise ratio. Embodiments employ frequency-domain photoacoustic imaging methodologies such as the photoacoustic radar, coupled with a multi-element ultrasonic sensor array to deliver spatially-resolved correlation images of photoacoustic sources, which may be employed to image optical heterogeneities within tissue-like scattering media.Type: GrantFiled: October 25, 2012Date of Patent: December 29, 2015Inventors: Andreas Mandelis, Sergey Telenkov, Bahman Lashkari
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Publication number: 20130102865Abstract: Systems and methods of frequency-domain photoacoustic imaging are provided utilizing an ultrasonic phased array probe and intensity modulated optical excitation with coding to improve signal-to-noise ratio. Embodiments employ frequency-domain photoacoustic imaging methodologies such as the photoacoustic radar, coupled with a multi-element ultrasonic sensor array to deliver spatially-resolved correlation images of photoacoustic sources, which may be employed to image optical heterogeneities within tissue-like scattering media.Type: ApplicationFiled: October 25, 2012Publication date: April 25, 2013Inventors: Andreas MANDELIS, Sergey TELENKOV, Bahman LASHKARI