Patents by Inventor Jay A. Chesavage
Jay A. Chesavage 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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Publication number: 20240041433Abstract: An ultrasound signal processor uses an excitation generator to cause displacement of a membrane or surface while a series of ultrasound pulses are applied to the membrane or surface. Phase differences between a transmitted signal and received signal are examined to determine the movement of the membrane or surface in response to the applied excitation. An examination of the phase response of the membrane or surface provides a determination as to whether the fluid type behind the membrane or surface is one of: no fluid, serum fluid, or purulent fluid.Type: ApplicationFiled: April 10, 2023Publication date: February 8, 2024Applicant: OtoNexus Medical Technologies, Inc.Inventors: Mark A. Moehring, George A. Gates, Jay Chesavage, Rahul Singh
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Publication number: 20240000421Abstract: An ultrasound signal processor uses an excitation generator to cause displacement of a tympanic membrane while a series of ultrasound pulses are applied to the tympanic membrane. Phase differences between a transmitted signal and received signal are examined to determine the movement of the tympanic membrane in response to the applied excitation. An examination of the phase response of the tympanic membrane provides a determination as to whether the fluid type behind the tympanic membrane is one of: no fluid, serum fluid, or purulent fluid.Type: ApplicationFiled: March 17, 2023Publication date: January 4, 2024Applicant: OtoNexus Medical Technologies, Inc.Inventors: Mark A. Moehring, George A. Gates, Daniel M. Kreindler, Jay A. Chesavage, Rahul Singh
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Publication number: 20230352082Abstract: A static random access memory (SRAM) has one or more arrays of memory cells, each array of memory cells activated in columns by a wordline. The activated column of memory cells asserts output data onto a plurality of bitlines coupled to output drivers. The SRAM includes a wordline controller generating a variable pulse width wordline which may be reduced sufficient to introduce memory read errors. Each of a high error rate, medium error rate, low error rate, and error-free rate is associated with a pulse width value generated by the wordline controller. A power consumption tradeoff exists between the wordline pulse width and consumed SRAM power. The wordline controller is thereby able to associate a wordline pulse width to an associated error rate for performing tasks which are insensitive to a high error rate or a medium error rate, which are specific to certain neural network training and inference using various NN data types.Type: ApplicationFiled: April 30, 2022Publication date: November 2, 2023Applicant: Ceremorphic, Inc.Inventors: Jay A. CHESAVAGE, Robert WISER, Neelam SURANA
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Publication number: 20230172493Abstract: An acoustic otoscope generates volume change excitations of either a trapezoidal or sinusoidal waveforms which are coupled into a sealed ear canal using a speculum tip. The change in volume results in a pressure change, for which a pressure measurement is taken during the volume change excitation interval. In one example, a trapezoidal time-domain volume change is presented, and a pressure measurement waveform is stored, the pressure measurement waveform thereafter examined to find a change of slope point in time, after which the pressure measurement waveform is scaled to be equal to the volume change waveform at that same point in time, a difference between scaled pressure measurement and volume excitation is formed, and examined for peak value prior to the earlier determined change in slope point in time.Type: ApplicationFiled: August 3, 2022Publication date: June 8, 2023Applicant: OtoNexus Medical Technologies, Inc.Inventors: Mark A. Moehring, Jay A. Chesavage, Weigang WANG, Dong Ho Choi
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Apparatus and method for characterization of a ductile membrane, surface, and sub-surface properties
Patent number: 11660074Abstract: An ultrasound signal processor uses an excitation generator to cause displacement of a membrane or surface while a series of ultrasound pulses are applied to the membrane or surface. Phase differences between a transmitted signal and received signal are examined to determine the movement of the membrane or surface in response to the applied excitation. An examination of the phase response of the membrane or surface provides a determination as to whether the fluid type behind the membrane or surface is one of: no fluid, serum fluid, or purulent fluid.Type: GrantFiled: February 12, 2020Date of Patent: May 30, 2023Assignee: OtoNexus Medical Technologies, Inc.Inventors: Mark A. Moehring, George A. Gates, Jay Chesavage, Rahul Singh -
Patent number: 11627935Abstract: An ultrasound signal processor uses an excitation generator to cause displacement of a tympanic membrane while a series of ultrasound pulses are applied to the tympanic membrane. Phase differences between a transmitted signal and received signal are examined to determine the movement of the tympanic membrane in response to the applied excitation. An examination of the phase response of the tympanic membrane provides a determination as to whether the fluid type behind the tympanic membrane is one of: no fluid, serum fluid, or purulent fluid.Type: GrantFiled: January 10, 2020Date of Patent: April 18, 2023Assignee: OtoNexus Medical Technologies, Inc.Inventors: Mark A. Moehring, George A. Gates, Daniel M. Kreindler, Jay A. Chesavage, Rahul Singh
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Patent number: 11602275Abstract: An OCT apparatus and method for characterization of a fluid adjacent to a tympanic membrane has a low coherence source which is coupled to a splitter which has a measurement path and a reference path. The reference path is temporally modulated for length, and the combined signals from the reference path and the measurement path are applied to a detector. The detector examines the width of the response and the time variation when an optional excitation source is applied to the tympanic membrane, the width of the response and the time variation forming a metric indicating the viscosity of a fluid adjacent to the tympanic membrane being measured.Type: GrantFiled: July 24, 2018Date of Patent: March 14, 2023Assignee: OtoNexus Medical Technologies, Inc.Inventors: Mark A. Moehring, Jay A. Chesavage
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Patent number: 11445942Abstract: An acoustic otoscope generates volume change excitations of either a trapezoidal or sinusoidal waveforms which are coupled into a sealed ear canal using a speculum tip. The change in volume results in a pressure change, for which a pressure measurement is taken during the volume change excitation interval. In one example, a trapezoidal time-domain volume change is presented, and a pressure measurement waveform is stored, the pressure measurement waveform thereafter examined to find a change of slope point in time, after which the pressure measurement waveform is scaled to be equal to the volume change waveform at that same point in time, a difference between scaled pressure measurement and volume excitation is formed, and examined for peak value prior to the earlier determined change in slope point in time.Type: GrantFiled: June 1, 2018Date of Patent: September 20, 2022Assignee: OtoNexus Medical Technologies, Inc.Inventors: Mark A Moehring, Jay A. Chesavage, Weigang Wang, Dong Ho Choi
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Publication number: 20220225881Abstract: An otoscope uses differential reflected response of optical energy at an absorption range and an adjacent wavelength range to determine the presence of water (where the wavelengths are water absorption wavelength and adjacent non-absorption excitation wavelengths). In another example of the invention, the otoscope utilizes OCT in combination with absorption and non-absorption range for bacteria and water.Type: ApplicationFiled: April 6, 2022Publication date: July 21, 2022Inventors: Mark A. MOEHRING, George A. GATES, Daniel KREINDLER, Jay A. CHESAVAGE
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Patent number: 11317811Abstract: An otoscope uses differential reflected response of optical energy at an absorption range and an adjacent wavelength range to determine the presence of water (where the wavelengths are water absorption wavelength and adjacent non-absorption excitation wavelengths). In another example of the invention, the otoscope utilizes OCT in combination with absorption and non-absorption range for bacteria and water.Type: GrantFiled: June 12, 2019Date of Patent: May 3, 2022Assignee: OTONEXUS MEDICAL TECHNOLOGIES, INC.Inventors: Mark A. Moehring, George A. Gates, Daniel Kreindler, Jay A. Chesavage
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Publication number: 20210219988Abstract: A pressure controller for a fluidic bladder has in sequence a pump, a first fluid line, a supply pressure sensor, a second fluid line, a bladder having an inlet coupled to the second fluid line, a bladder outlet coupled to a third fluid line of substantially equal length to the second fluid line, a return pressure sensor, and a fourth fluid line coupled to the return pressure sensor and returning fluid from the pump to the reservoir. A pressure estimate is formed by establishing the second fluid line length and inner diameter as the same as the third fluid line length and inner diameter, and forming the pressure estimate by averaging the supply pressure and return pressure. The pressure controller receives a setpoint pressure as a command and data over a wireless channel, and computes a head pressure offset by turning the pump off and measuring the supply and return pressures.Type: ApplicationFiled: April 7, 2021Publication date: July 22, 2021Applicant: VASPER SYSTEMS LLCInventors: Jay A. Chesavage, Marshall Lise, Eric HOFFMAN
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Patent number: 10993727Abstract: A pressure controller for a fluidic bladder has in sequence a pump, a first fluid line, a supply pressure sensor, a second fluid line, a bladder having an inlet coupled to the second fluid line, a bladder outlet coupled to a third fluid line of substantially equal length to the second fluid line, a return pressure sensor, and a fourth fluid line coupled to the return pressure sensor and returning fluid from the pump to the reservoir. A pressure estimate is formed by averaging the supply pressure and return pressure. The pressure controller receives a setpoint pressure as a command and data over a wireless channel, and computes a head pressure offset by turning the pump off and measuring the supply and return pressures.Type: GrantFiled: March 30, 2016Date of Patent: May 4, 2021Assignee: Vasper Systems, LLCInventors: Jay A. Chesavage, Marshall Lise, Eric Hoffman
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Patent number: 10925583Abstract: An apparatus for the detection of compartment syndrome (CS) provides an ultrasound transducer which is operative to excite the ultrasound transducer with a transmit waveform having a center frequency. The ultrasound beam traverses through the compartments of interest, and reflections of signal through Rayleigh scattering are received, amplified, and mixed with a transmit clock to form a baseband quadrature signal, or alternatively, are sampled as RF. Reflections from the compartment volume front and rear fascia interfaces are examined for phase shift, after which an elasticity metric is generated indicating the likelihood of CS in the effected tissues.Type: GrantFiled: June 12, 2017Date of Patent: February 23, 2021Inventor: Jay A. Chesavage
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Patent number: 10806625Abstract: A bladder pressure estimator has in sequence a pump, a first hose, a supply pressure sensor, a second hose, a bladder having an inlet coupled to the second hose, a bladder outlet coupled to a third hose of substantially equal length to the second hose, a return pressure sensor, and a fourth hose coupled to the return pressure sensor and returning fluid from the pump to the reservoir. A pressure estimate is formed by establishing the second hose length and inner diameter as the same as the third hose length and inner diameter, and forming the pressure estimate by averaging the supply pressure and return pressure. In an alternative embodiment, a control regulator forms an error signal from the difference between a setpoint and the average of the supply and return pressures. A head pressure measurement may be done by turning the pump off after a steady state reading is made.Type: GrantFiled: December 2, 2015Date of Patent: October 20, 2020Assignee: Vasper Systems, LLCInventors: Jay A. Chesavage, Marshall Lise, Gregory A. Chesavage
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APPARATUS AND METHOD FOR CHARACTERIZATION OF A DUCTILE MEMBRANE, SURFACE, AND SUB-SURFACE PROPERTIES
Publication number: 20200245975Abstract: An ultrasound signal processor uses an excitation generator to cause displacement of a membrane or surface while a series of ultrasound pulses are applied to the membrane or surface. Phase differences between a transmitted signal and received signal are examined to determine the movement of the membrane or surface in response to the applied excitation. An examination of the phase response of the membrane or surface provides a determination as to whether the fluid type behind the membrane or surface is one of: no fluid, serum fluid, or purulent fluid.Type: ApplicationFiled: February 12, 2020Publication date: August 6, 2020Inventors: Mark A. MOEHRING, George GATES, Jay A. CHESAVAGE, Rahul SINGH -
Publication number: 20200187899Abstract: An ultrasound signal processor uses an excitation generator to cause displacement of a tympanic membrane while a series of ultrasound pulses are applied to the tympanic membrane. Phase differences between a transmitted signal and received signal are examined to determine the movement of the tympanic membrane in response to the applied excitation. An examination of the phase response of the tympanic membrane provides a determination as to whether the fluid type behind the tympanic membrane is one of: no fluid, serum fluid, or purulent fluid.Type: ApplicationFiled: January 10, 2020Publication date: June 18, 2020Inventors: Mark A. Moehring, George A. Gates, Daniel M. Kreindler, Jay A. Chesavage, Rahul Singh
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Apparatus and method for characterization of a ductile membrane, surface, and sub-surface properties
Patent number: 10675001Abstract: An ultrasound signal processor uses an excitation generator to cause displacement of a membrane or surface while a series of ultrasound pulses are applied to the membrane or surface. Phase differences between a transmitted signal and received signal are examined to determine the movement of the membrane or surface in response to the applied excitation. An examination of the phase response of the membrane or surface provides a determination as to whether the fluid type behind the membrane or surface is one of: no fluid, serum fluid, or purulent fluid.Type: GrantFiled: June 4, 2016Date of Patent: June 9, 2020Assignee: OtoNexus Medical Technologies, Inc.Inventors: Mark A. Moehring, George A. Gates, Jay A. Chesavage, Rahul Singh -
Patent number: 10660604Abstract: An ultrasound signal processor uses an excitation generator to cause displacement of a tympanic membrane while a series of ultrasound pulses are applied to the tympanic membrane. Phase differences between a transmitted signal and received signal are examined to determine the movement of the tympanic membrane in response to the applied excitation. An examination of the phase response of the tympanic membrane provides a determination as to whether the fluid type behind the tympanic membrane is one of: no fluid, serum fluid, or purulent fluid.Type: GrantFiled: July 13, 2015Date of Patent: May 26, 2020Assignee: OtoNexus Medical Technologies, Inc.Inventors: Mark A. Moehring, George A. Gates, Daniel M. Kreindler, Jay A. Chesavage, Rahul Singh
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Patent number: 10568515Abstract: An OCT apparatus and method for characterization of a fluid adjacent to a tympanic membrane has a low coherence source which is coupled to a splitter which has a measurement path and a reference path. The reference path is temporally modulated for length, and the combined signals from the reference path and the measurement path are applied to a detector. The detector examines the width of the response and the time variation when an optional excitation source is applied to the tympanic membrane, the width of the response and the time variation forming a metric indicating the viscosity of a fluid adjacent to the tympanic membrane being measured.Type: GrantFiled: June 21, 2016Date of Patent: February 25, 2020Assignee: OtoNexus Medical Technologies, Inc.Inventors: Mark A. Moehring, Jay A. Chesavage
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Publication number: 20200029820Abstract: An otoscope uses differential reflected response of optical energy at an absorption range and an adjacent wavelength range to determine the presence of water (where the wavelengths are water absorption wavelength and adjacent non-absorption excitation wavelengths). In another example of the invention, the otoscope utilizes OCT in combination with absorption and non-absorption range for bacteria and water.Type: ApplicationFiled: June 12, 2019Publication date: January 30, 2020Inventors: Mark A. MOEHRING, George A. GATES, Daniel KREINDLER, Jay A. CHESAVAGE