Patents by Inventor Majid Sarrafzadeh
Majid Sarrafzadeh 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: 20230337966Abstract: A handheld, conforming capacitive sensing apparatus configured to measure Sub-Epidermal Moisture (SEM) as a mean to detect and monitor the formation of pressure ulcers. The device incorporates an array of electrodes which are excited to measure and scan SEM in a programmable and multiplexed manner by a battery-less RF-powered chip. The scanning operation is initiated by an interrogator which excites a coil embedded in the apparatus and provides the needed energy burst to support the scanning/reading operation. Each electrode measures the equivalent sub-epidermal capacitance corresponding and representing the moisture content.Type: ApplicationFiled: June 30, 2023Publication date: October 26, 2023Applicants: The Regents of the University of California, Bruin Biometrics, LLCInventors: Majid SARRAFZADEH, William KAISER, Alireza MEHRNIA, Barbara BATES-JENSEN, Frank WANG, Michael FLESCH, Joseph BOYSTAK, Yeung LAM
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Patent number: 11779265Abstract: A handheld, conforming capacitive sensing apparatus configured to measure Sub-Epidermal Moisture (SEM) as a mean to detect and monitor the formation of pressure ulcers. The device incorporates an array of electrodes which are excited to measure and scan SEM in a programmable and multiplexed manner by a battery-less RF-powered chip. The scanning operation is initiated by an interrogator which excites a coil embedded in the apparatus and provides the needed energy burst to support the scanning/reading operation. Each electrode measures the equivalent sub-epidermal capacitance corresponding and representing the moisture content.Type: GrantFiled: June 13, 2019Date of Patent: October 10, 2023Assignees: Bruin Biometrics, LLC, The Regents of the University of CaliforniaInventors: Majid Sarrafzadeh, William Kaiser, Alireza Mehrnia, Barbara M. Bates-Jensen, Frank Wang, Michael Flesch, Joseph Boystak, Yeung Lam
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Publication number: 20230121411Abstract: Congestive heart failure (CHF) is a leading cause of death in the United States. WANDA is a wireless health project that leverages sensor technology and wireless communication to monitor the health status of patients with CHF. The first pilot study of WANDA showed the system’s effectiveness for patients with CHF. However, WANDA experienced a considerable amount of missing data due to system misuse, nonuse, and failure. Missing data is highly undesirable as automated alarms may fail to notify healthcare professionals of potentially dangerous patient conditions. Embodiments of the present disclosure may utilize machine learning techniques including projection adjustment by contribution estimation regression (PACE), Bayesian methods, and voting feature interval (VFI) algorithms to predict both non-binomial and binomial data. The experimental results show that the aforementioned algorithms are superior to other methods with high accuracy and recall.Type: ApplicationFiled: September 20, 2022Publication date: April 20, 2023Applicant: The Regents of the University of CaliforniaInventors: Majid Sarrafzadeh, Myung-Kyung Suh
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Patent number: 11617537Abstract: A fabric-based pressure sensor array includes: (1) a first layer including M elongated conductive strips coated thereon; (2) a second layer including N elongated conductive strips coated thereon, the M elongated conductive strips extending crosswise relative to the N elongated conductive strips to define M×N intersections; and (3) a unitary textile sheet extending between the first layer and the second layer so as to overlap the M×N intersections, the textile sheet having a variable resistivity in response to applied pressure so as to define M×N pressure sensors at locations corresponding to the M×N intersections.Type: GrantFiled: January 20, 2016Date of Patent: April 4, 2023Assignees: The Regent of the University of California, Medisens Wireless, Inc.Inventors: Majid Sarrafzadeh, Wenyao Xu, Ming-Chun Huang, Nitin Raut, Behrooz Yadegar
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Patent number: 11450413Abstract: Congestive heart failure (CHF) is a leading cause of death in the United States. WANDA is a wireless health project that leverages sensor technology and wireless communication to monitor the health status of patients with CHF. The first pilot study of WANDA showed the system's effectiveness for patients with CHF. However, WANDA experienced a considerable amount of missing data due to system misuse, nonuse, and failure. Missing data is highly undesirable as automated alarms may fail to notify healthcare professionals of potentially dangerous patient conditions. Embodiments of the present disclosure may utilize machine learning techniques including projection adjustment by contribution estimation regression (PACE), Bayesian methods, and voting feature interval (VFI) algorithms to predict both non-binomial and binomial data. The experimental results show that the aforementioned algorithms are superior to other methods with high accuracy and recall.Type: GrantFiled: August 27, 2012Date of Patent: September 20, 2022Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Majid Sarrafzadeh, Myung-Kyung Suh
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Patent number: 11253192Abstract: A handheld, conforming capacitive sensing apparatus configured to measure Sub-Epidermal Moisture (SEM) as a mean to detect and monitor the formation of pressure ulcers. The device incorporates an array of electrodes which are excited to measure and scan SEM in a programmable and multiplexed manner by a battery-less RF-powered chip. The scanning operation is initiated by an interrogator which excites a coil embedded in the apparatus and provides the needed energy burst to support the scanning/reading operation. Each electrode measures the equivalent sub-epidermal capacitance corresponding and representing the moisture content.Type: GrantFiled: December 5, 2018Date of Patent: February 22, 2022Assignees: Bruain Biometrics, LLC, The Regents of the University of CaliforniaInventors: Majid Sarrafzadeh, William Kaiser, Alireza Mehrnia, Barbara M. Bates-Jensen, Frank Wang, Michael Flesch, Joseph Boystak, Yeung Lam
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Patent number: 11170310Abstract: Systems and methods for automatically analyzing and selecting prominent channels from multi-dimensional biomedical signals in order to detect particular diseases or ailments are provided. Such systems and methods may be applied in different ways to obtain numerous benefits, such as lowering of power and processing requirements, reducing an amount of data acquired, simplifying hardware deployment, detecting non-trivial patterns, obtaining, clinical episode prognosis, improving patient care, and/or the like.Type: GrantFiled: January 25, 2013Date of Patent: November 9, 2021Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Majid Sarrafzadeh, Mars Lan
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Patent number: 10937547Abstract: A method for subject assessment in an environment includes receiving subject sensor data from a sensor positioned adjacent to a subject, receiving beacon signals from a beacons placed at different positions within the environment, processing the beacon signals to determine a location of the subject within the environment based on relative power levels of the received beacon signals, and processing the subject sensor data to determine an activity of the subject.Type: GrantFiled: June 14, 2016Date of Patent: March 2, 2021Assignee: The Regents of the University of CaliforniaInventors: Ramin Ramezani, Babak Moatamed, Arjun, Arash Naeim, Majid Sarrafzadeh
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Patent number: 10503967Abstract: A system includes an interface configured to receive time series data representing information from a plurality of sensors, and a processor configured to construct a behavior model based on the time series data. The processor identifies features in the time series data, divides the time series data of each of the identified features into segments, and extracts feature components from the segments. The processor further constructs a plurality of state graphs, each state graph including components connected by weighted edges, constructs a behavior graph, wherein the state graphs form vertices of the behavior graph, clusters the state graphs in the behavior graph; and selects a representative state graph from each cluster, wherein the behavior model includes the selected state graphs.Type: GrantFiled: November 23, 2015Date of Patent: December 10, 2019Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Majid Sarrafzadeh, Foad Dabiri, Hyduke Noshadi
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Publication number: 20190290189Abstract: A handheld, conforming capacitive sensing apparatus configured to measure Sub-Epidermal Moisture (SEM) as a mean to detect and monitor the formation of pressure ulcers. The device incorporates an array of electrodes which are excited to measure and scan SEM in a programmable and multiplexed manner by a battery-less RF-powered chip. The scanning operation is initiated by an interrogator which excites a coil embedded in the apparatus and provides the needed energy burst to support the scanning/reading operation. Each electrode measures the equivalent sub-epidermal capacitance corresponding and representing the moisture content.Type: ApplicationFiled: June 13, 2019Publication date: September 26, 2019Applicants: BRUIN BIOMETRICS, LLC, THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Majid SARRAFZADEH, William KAISER, Alireza MEHRNIA, Barbara M. BATES-JENSEN, Frank WANG, Michael FLESCH, Joseph BOYSTAK, Yeung LAM
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Patent number: 10402540Abstract: Systems, methods, and devices are disclosed that monitor the health status of patients. Dynamic task management functions apply data analytics to discretize continuous data values from monitored patients, and apply association rule mining techniques to prioritized required user tasks, to minimize the number of daily action items required by patients. The remaining action items maximize information gain, thereby improving the overall level of patient adherence and satisfaction without losing health monitoring effectiveness.Type: GrantFiled: August 27, 2013Date of Patent: September 3, 2019Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Majid Sarrafzadeh, Myung-Kyung Suh, Mars Lan, Hassan Ghasemzadeh
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Publication number: 20190200907Abstract: A compact perfusion scanner and method of characterizing tissue health status are disclosed that incorporate pressure sensing components in conjunction with the optical sensors to monitor the level of applied pressure on target tissue for precise skin/tissue blood perfusion measurements and oximetry. The systems and methods allow perfusion imaging and perfusion mapping (geometric and temporal), signal processing and pattern recognition, noise cancelling and data fusion of perfusion data, scanner position and pressure readings.Type: ApplicationFiled: March 7, 2019Publication date: July 4, 2019Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Majid Sarrafzadeh, William Kaiser, Barbara Bates-Jensen, Alireza Mehrnia, Bijan Mapar, Frank Wang
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Patent number: 10265029Abstract: Systems and methods for generalized precursor pattern discovery that work with a wide range of biomedical signals and applications to detect a wide range of medical events are disclosed. In some embodiments, the methods and systems do not require domain-specific knowledge or significant reconfiguration based on the medical event being analyzed, hence it is also possible to discover patterns previously unknown to experts. In some embodiments, to build precursor pattern detection models, the system obtains annotated monitoring data. Positive and negative segments are extracted from the annotated monitoring data, and are preprocessed. Features are extracted from the preprocessed segments, and selected features are chosen from the extracted features. The selected features are classified to create the precursor pattern detection model The precursor pattern detection model may then be used in real time to detect occurrences of the medical event of interest.Type: GrantFiled: August 28, 2013Date of Patent: April 23, 2019Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Majid Sarrafzadeh, Myung-Kyung Suh, Mars Lan, Hassan Ghasemzadeh
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Publication number: 20190104981Abstract: A handheld, conforming capacitive sensing apparatus configured to measure Sub-Epidermal Moisture (SEM) as a mean to detect and monitor the formation of pressure ulcers. The device incorporates an array of electrodes which are excited to measure and scan SEM in a programmable and multiplexed manner by a battery-less RF-powered chip. The scanning operation is initiated by an interrogator which excites a coil embedded in the apparatus and provides the needed energy burst to support the scanning/reading operation. Each electrode measures the equivalent sub-epidermal capacitance corresponding and representing the moisture content.Type: ApplicationFiled: December 5, 2018Publication date: April 11, 2019Applicants: BRUIN BIOMETRICS, LLC, The Regents Of The University Of CaliforniaInventors: Majid SARRAFZADEH, William Kaiser, Alireza Mehrnia, Barbara M. Bates-Jensen, Frank Wang, Michael Flesch, Joseph Boystak, Yeung Lam
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Patent number: 10201746Abstract: A method and apparatus for the detection, analysis, and identification of realistic human body and limb movements during sports actions for multiple uses comprises collecting the health information of the move, using the moves as a training and monitoring techniques in live usage settings, and as inputs to simulators and video game environments. At least one body-worn sensor transmits values wirelessly to a computing device that records the moves and calculates the health statistics then uses a machine-learning algorithm to analyze and identify the moves. These algorithms then output information and can simulate realistic moves, identify how far from these realistic moves the actual move is, and apply these moves to an electronic game. These algorithms, through various techniques, can distinguish movements, identify many different fine-grain movements, and enforce the full completion of these moves before registering them, thus preventing cheating in a realistic gaming scenario.Type: GrantFiled: May 8, 2014Date of Patent: February 12, 2019Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Majid Sarrafzadeh, Jack Bobak Mortazavi, Xiaolong Li, Kin Chung Chu
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Patent number: 10188340Abstract: A handheld, conforming capacitive sensing apparatus configured to measure Sub-Epidermal Moisture (SEM) as a mean to detect and monitor the formation of pressure ulcers. The device incorporates an array of electrodes which are excited to measure and scan SEM in a programmable and multiplexed manner by a battery-less RF-powered chip. The scanning operation is initiated by an interrogator which excites a coil embedded in the apparatus and provides the needed energy burst to support the scanning/reading operation. Each electrode measures the equivalent sub-epidermal capacitance corresponding and representing the moisture content.Type: GrantFiled: April 9, 2016Date of Patent: January 29, 2019Assignees: Bruin Biometrics, LLC, The Regents of the University of CaliforniaInventors: Majid Sarrafzadeh, William Kaiser, Alireza Mehrnia, Barbara M. Bates-Jensen, Frank Wang, Michael Flesch, Joseph Boystak, Yeung Lam
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Publication number: 20180190382Abstract: A method for subject assessment in an environment includes receiving subject sensor data from a sensor positioned adjacent to a subject, receiving beacon signals from a beacons placed at different positions within the environment, processing the beacon signals to determine a location of the subject within the environment based on relative power levels of the received beacon signals, and processing the subject sensor data to determine an activity of the subject.Type: ApplicationFiled: June 14, 2016Publication date: July 5, 2018Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Ramin RAMEZANI, Babak MOATAMED, Arjun ---, Arash NAEIM, Majid SARRAFZADEH
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Patent number: 9980673Abstract: A handheld, conforming capacitive sensing apparatus configured to measure Sub-Epidermal Moisture (SEM) as a mean to detect and monitor the formation of pressure ulcers. The device incorporates an array of electrodes which are excited to measure and scan SEM in a programmable and multiplexed manner by a battery-less RF-powered chip. The scanning operation is initiated by an interrogator which excites a coil embedded in the apparatus and provides the needed energy burst to support the scanning/reading operation. Each electrode measures the equivalent sub-epidermal capacitance corresponding and representing the moisture content.Type: GrantFiled: March 2, 2016Date of Patent: May 29, 2018Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, BRUIN BIOMETRICS, LLCInventors: Majid Sarrafzadeh, William Kaiser, Alireza Mehrnia, Barbara M. Bates-Jensen, Frank Wang, Michael Flesch, Joseph Boystak, Yeung Lam
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Patent number: 9901815Abstract: Devices, methods, and systems for monitoring, classifying and encouraging activity through the use of an accelerometer or other sensor in a toy or other accessory (such as a backpack or watch) that records activity are disclosed. The activity is classified, using various motion classification algorithms, to determine the specific types and amount of activities performed and the times and duration for which they were performed. The classified data is used in the rest of the system, which allows users to view activity history, recommendations for how to improve health, and play games in which the player's game performance is effected by their activity levels. In games and on the website, feedback is also given to users to encourage and reward exercise, while handicapping users that are not active.Type: GrantFiled: March 15, 2013Date of Patent: February 27, 2018Assignee: The Regents of the University of CaliforniaInventors: Majid Sarrafzadeh, Jason Holmes, Jordan Mendler, Simran Basi, Diego Villasenor, Bita Zadeh, Daniel Sebastian Pan
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Patent number: 9888868Abstract: A sensor system and method configured to take multiple channels of sensors, and based on context and user behavior reflected in the signals, identifies specified channels for sensing according to a sensing policy. The sensing policy is used to reduce the amount of data sampled, such that it is possible to reconstruct the values of the non sampled sensors efficiently. The sensing policy is influenced by user and system's behavior and can be assigned either offline or in real time.Type: GrantFiled: June 17, 2011Date of Patent: February 13, 2018Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Majid Sarrafzadeh, Miodrag Potkonjak, Foad Dabiri, Hyduke Noshadi, Saro Meguerdichian