Patents by Inventor Dan O. Popa
Dan O. Popa 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: 20230211558Abstract: Systems and methods for additive manufacturing. In some examples, a system includes a frame defining an interior volume and an overhead robotic arm suspended from a gantry on a ceiling of the frame. The system includes manufacturing subsystems located within the interior volume of the frame. The system includes a control system configured for controlling the overhead robotic arm for parts movement among additive manufacturing processes using the manufacturing subsystems. The manufacturing subsystems can include one or more of: a microassembly station, an aerosol jetting print station, an intense pulsed light (IPL) photonic sintering station, a fiber weaving station, and a 3D printing station.Type: ApplicationFiled: June 21, 2022Publication date: July 6, 2023Applicant: University of Louisville Research Foundation, Inc.Inventors: Andriy Sherehiy, Dan O. Popa, Danming Wei, Andrew Scott Nimon, Moath Hasan Alqatamin, Alireza Tofangchi, Keng Hsu, Kevin Walsh, Cindy Harnett, Thad Druffel, Dilan Ratnayake, Alexander Curry, Sushmita Challa, Amir Hossein Ghahremani, Doug Jackson, Ruoshi Zhang, Antoine Blasiak, M. Hossein Saadatzi, Garrett McGrady
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Publication number: 20230130680Abstract: A robot skin apparatus includes polymer membranes encapsulating a pressure sensor. The sensor includes piezo-sensitive material in contact with a pair of electrodes in spaced relationship to form a circuit. The apparatus may include a flexible substrate, with the electrodes thereon. The piezo-sensitive material may be piezoresistive film. The electrodes may be symmetrically patterned on the substrate to form a substantially circular peripheral boundary. The apparatus may include pressure sensors on opposite sides of a plane for temperature compensation, a plurality of pressure sensors arrayed on the substrate, and a data acquisition system. A method of fabricating the apparatus includes a wet lithography process for patterning the piezoresistive film. A system includes a pair of gripper fingers, an actuator connected to the fingers, a robot skin apparatus positioned on one of the fingers, and an electronic unit for receiving data from the robot skin and controlling the fingers.Type: ApplicationFiled: December 22, 2022Publication date: April 27, 2023Applicant: University of Louisville Research Foundation, Inc.Inventors: Joshua R. Baptist, Mohammad Nasser Saadatzi, Zhong Yang, Ruoshi Zhang, Dan O. Popa
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Patent number: 11541550Abstract: A robot skin apparatus includes polymer membranes encapsulating a pressure sensor. The sensor includes piezo-sensitive material in contact with a pair of electrodes in spaced relationship to form a circuit. The apparatus may include a flexible substrate, with the electrodes thereon. The piezo-sensitive material may be piezoresistive film. The electrodes may be symmetrically patterned on the substrate to form a substantially circular peripheral boundary. The apparatus may include pressure sensors on opposite sides of a plane for temperature compensation, a plurality of pressure sensors arrayed on the substrate, and a data acquisition system. A method of fabricating the apparatus includes a wet lithography process for patterning the piezoresistive film. A system includes a pair of gripper fingers, an actuator connected to the fingers, a robot skin apparatus positioned on one of the fingers, and an electronic unit for receiving data from the robot skin and controlling the fingers.Type: GrantFiled: April 6, 2018Date of Patent: January 3, 2023Assignee: University of Louisville Research Foundation, Inc.Inventors: Joshua R. Baptist, Mohammad Nasser Saadatzi, Zhong Yang, Ruoshi Zhang, Dan O. Popa
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Publication number: 20220152837Abstract: This specification describes an adaptive robotic nursing assistant for physical tasks and patient observation and feedback. In some examples, the adaptive robotic nursing assistant includes an omni-directional mobile platform; a footrest on the omni-directional mobile platform; a handlebar located above the footrest such that a user standing on the footrest can grasp the handlebar; a display above the handlebar and at least one user input device; a robot manipulator comprising a robotic arm and an end effector on the robotic arm; and a control system coupled to the omni-directional mobile platform, the control system comprising at least one processor and memory storing executable instructions for the at least one processor to control the omni-directional mobile platform.Type: ApplicationFiled: April 16, 2020Publication date: May 19, 2022Applicant: University of Louisville Research Foundation, Inc.Inventors: Sumit Kumar Das, Mohammad Nasser Saadatzi, Indika B. Wijayasinghe, Shamsudeen Olawale Abubakar, Christopher Kevin Robinson, Dan O. Popa
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SYSTEMS, APPARATUSES AND METHODS FOR CONTROLLING PROSTHETIC DEVICES BY GESTURES AND OTHER MODALITIES
Publication number: 20210181855Abstract: Systems and methods for manual gesture recognition to control prosthetic devices. Low encumbrance systems utilizing glove-based recognition to control prosthetic devices. Prosthetic control systems and methods are also provided utilizing elements for application on the user's fingernails.Type: ApplicationFiled: November 30, 2020Publication date: June 17, 2021Inventors: Oguz Yetkin, Joseph D. Sanford, Dan O. Popa, Lena C. Wallace, Fahad Mirza, Roopak Karulkar, Sumit Kumar Das, Joshua R. Baptist, J. Paul Carpenter -
Systems, apparatuses and methods for controlling prosthetic devices by gestures and other modalities
Patent number: 10852835Abstract: Systems and methods for manual gesture recognition to control prosthetic devices. Low encumbrance systems utilizing glove-based recognition to control prosthetic devices. Prosthetic control systems and methods are also provided utilizing elements for application on the user's fingernails.Type: GrantFiled: April 16, 2017Date of Patent: December 1, 2020Assignee: Board of Regents, The University of Texas SystemInventors: Oguz Yetkin, Joseph D. Sanford, Dan O. Popa, Lena C. Wallace, Fahad Mirza, Roopak Karulkar, Sumit Kumar Das, Joshua R. Baptist, J. Paul Carpenter -
Publication number: 20200070356Abstract: A robot skin apparatus includes polymer membranes encapsulating a pressure sensor. The sensor includes piezo-sensitive material in contact with a pair of electrodes in spaced relationship to form a circuit. The apparatus may include a flexible substrate, with the electrodes thereon. The piezo-sensitive material may be piezoresistive film. The electrodes may be symmetrically patterned on the substrate to form a substantially circular peripheral boundary. The apparatus may include pressure sensors on opposite sides of a plane for temperature compensation, a plurality of pressure sensors arrayed on the substrate, and a data acquisition system. A method of fabricating the apparatus includes a wet lithography process for patterning the piezoresistive film. A system includes a pair of gripper fingers, an actuator connected to the fingers, a robot skin apparatus positioned on one of the fingers, and an electronic unit for receiving data from the robot skin and controlling the fingers.Type: ApplicationFiled: April 6, 2018Publication date: March 5, 2020Applicant: University of Louisville Research Foundation, Inc.Inventors: Joshua R. Baptist, Mohammad Nasser Saadatzi, Zhong Yang, Ruoshi Zhang, Dan O. Popa
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SYSTEMS, APPARATUSES AND METHODS FOR CONTROLLING PROSTHETIC DEVICES BY GESTURES AND OTHER MODALITIES
Publication number: 20170296363Abstract: Systems and methods for manual gesture recognition to control prosthetic devices. Low encumbrance systems utilizing glove-based recognition to control prosthetic devices. Prosthetic control systems and methods are also provided utilizing elements for application on the user's fingernails.Type: ApplicationFiled: April 16, 2017Publication date: October 19, 2017Applicant: Board of Regents, The University of Texas SystemInventors: Oguz Yetkin, Joseph D. Sanford, Dan O. Popa, Lena C. Wallace, Fahad Mirza, Roopak Karulkar, Sumit Kumar Das, Joshua R. Baptist, J. Paul Carpenter -
Patent number: 8741737Abstract: Described are three-dimensional stacked semiconductor structures having one or more vertical interconnects. Vertical stacking relies on vertical interconnects and wafer bonding using a patternable polymer. The polymer is preferably lithographically patternable and photosensitive. Curing of the polymer is preselected from about 35% to up to about 100%, depending on a desired outcome. When fabricated, such vertically stacked structures include electrical interconnects provided by solder reflow. Solder reflow temperature is bounded by a curing and glass transition temperatures of a polymer used for bonding.Type: GrantFiled: September 20, 2007Date of Patent: June 3, 2014Assignee: Board of Regents, The University of Texas SystemInventors: Dan O. Popa, Rachita Dewan, Praveen Pandojirao-Sunkojirao, Jung-Chih Chiao
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Patent number: 8539854Abstract: Robots, and atomic force microscopes including robots, that utilize in-plane actuators to provide large out-of-plane working volumes and forces.Type: GrantFiled: October 5, 2009Date of Patent: September 24, 2013Assignee: Board of Regents, The University of Texas SystemInventors: Dan O. Popa, Rakesh Murthy
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Publication number: 20100145511Abstract: Robots, controllers, systems, and methods for microcrawler robots (e.g., with stick-slip gaited locomotion and/or with power multiplexing between actuators).Type: ApplicationFiled: August 18, 2009Publication date: June 10, 2010Inventors: Dan O. Popa, Rakesh Murthy, Aditya N. Das
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Publication number: 20100126297Abstract: Robots, and atomic force microscopes including robots, that utilize in-plane actuators to provide large out-of-plane working volumes and forces.Type: ApplicationFiled: October 5, 2009Publication date: May 27, 2010Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEMInventors: Dan O. Popa, Rakesh Murthy
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Patent number: 7548011Abstract: Methods and apparatuses for sensing and adjusting lateral motion in a comb drive actuated MEMS device are provided. If lateral motion is sensed by a lateral motion sensor coupled to the comb drive actuated MEMS device, and the lateral motion is greater than a reference value, a feedback controller adjusts the lateral motion by providing a drive signal to a comb drive electrode of a comb drive actuator.Type: GrantFiled: May 18, 2006Date of Patent: June 16, 2009Assignee: The Board of Regents of the University of Texas SystemInventors: Bruno Borovic, Frank L. Lewis, Ai Qun Liu, Dan O. Popa
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Publication number: 20080297340Abstract: Sensitive elements and devices include at least one piezoelectric material and a compliant polymer substrate having elastomeric properties to lend flexibility without affecting sensitivity of the element and/or device. Sensitive elements are in operable communication with a control system; communication is wireless. Interaction of a sensitive element/sensitive device with an operator/environmental object/device is provided through use of an impedance controller and filter.Type: ApplicationFiled: May 29, 2007Publication date: December 4, 2008Inventors: Dan O. Popa, Harry Stephanou, Shashank Priya
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Publication number: 20080122115Abstract: Described are three-dimensional stacked semiconductor structures having one or more vertical interconnects. Vertical stacking relies on vertical interconnects and wafer bonding using a patternable polymer. The polymer is preferably lithographically patternable and photosensitive. Curing of the polymer is preselected from about 35% to up to about 100%, depending on a desired outcome. When fabricated, such vertically stacked structures include electrical interconnects provided by solder reflow. Solder reflow temperature is bounded by a curing and glass transition temperatures of a polymer used for bonding.Type: ApplicationFiled: September 20, 2007Publication date: May 29, 2008Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEMInventors: Dan O. Popa, Rachita Dewan, Praveen Pandojirao-Sunkojirao, Jung-Chih Chiao
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Publication number: 20070267939Abstract: Methods and apparatuses for sensing and adjusting lateral motion in a comb drive actuated MEMS device are provided. If lateral motion is sensed by a lateral motion sensor coupled to the comb drive actuated MEMS device, and the lateral motion is greater than a reference value, a feedback controller adjusts the lateral motion by providing a drive signal to a comb drive electrode of a comb drive actuator.Type: ApplicationFiled: May 18, 2006Publication date: November 22, 2007Inventors: Bruno Borovic, Frank L. Lewis, Ai Qun Liu, Dan O. Popa
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Patent number: 7028856Abstract: This crane control apparatus and method with swing control and variable impedance is intended for use with overhead cranes where a line suspended from a moveable hoist suspends a load. It is responsive to operator force applied to the load and uses a control strategy based on estimating the force applied by the operator to the load and, subject to a variable desired load impedance, reacting in response to this estimate. The human pushing force on the load is not measured directly, but is estimated from measurement of the angle of deflection of the line suspending the load and measurement of hoist position.Type: GrantFiled: August 7, 2003Date of Patent: April 18, 2006Assignee: Gorbel, Inc.Inventors: Bradford B. Laundry, Li-te Liu, Gustavo Montemayor, Dan O. Popa, Michael K. Taylor, John T. Wen
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Patent number: 6796447Abstract: This crane control system with swing control and variable impedance is intended for use with overhead cranes where a line suspended from a moveable hoist suspends a load. It is responsive to operator force applied to the load and uses a control strategy based on estimating the force applied by the operator to the load and, subject to a variable desired load impedance, reacting in response to this estimate. The human pushing force on the load is not measured directly, but is estimated from measurement of the angle of deflection of the line suspending the load and measurement of hoist position.Type: GrantFiled: February 6, 2002Date of Patent: September 28, 2004Assignee: Gorbel, Inc.Inventors: Bradford B. Laundry, Li-te Liu, Gustavo Montemayor, Dan O. Popa, Michael K. Taylor, John T. Wen
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Publication number: 20040155004Abstract: This crane control apparatus and method with swing control and variable impedance is intended for use with overhead cranes where a line suspended from a moveable hoist suspends a load. It is responsive to operator force applied to the load and uses a control strategy based on estimating the force applied by the operator to the load and, subject to a variable desired load impedance, reacting in response to this estimate. The human pushing force on the load is not measured directly, but is estimated from measurement of the angle of deflection of the line suspending the load and measurement of hoist position.Type: ApplicationFiled: August 7, 2003Publication date: August 12, 2004Inventors: Bradford B. Laundry, Li-Te Liu, Gustavo Montemayor, Dan O. Popa, Michael K. Taylor, John T. Wen
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Publication number: 20020144969Abstract: This crane control system with swing control and variable impedance is intended for use with overhead cranes where a line suspended from a moveable hoist suspends a load. It is responsive to operator force applied to the load and uses a control strategy based on estimating the force applied by the operator to the load and, subject to a variable desired load impedance, reacting in response to this estimate. The human pushing force on the load is not measured directly, but is estimated from measurement of the angle of deflection of the line suspending the load and measurement of hoist position.Type: ApplicationFiled: February 6, 2002Publication date: October 10, 2002Inventors: Bradford B. Laundry, Peter L. Liu, Gustavo Montemayor, Dan O. Popa, Michael K. Taylor, John T. Wen