Patents by Inventor Joseph Potkay
Joseph Potkay 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: 20230417711Abstract: A microscale collector and injector device comprises a microscale passive pre-concentrator (?PP) and a microscale progressively-heated injector (?PHI). The ?PP devices comprises first and second substrate portions, a first collection material, a ?PP heater, and an outlet. The first substrate portion defines an array of microscale diffusion channels. The first and second substrate portions cooperate to define a first compartment in fluid communication with the diffusion channels. The first collection material is disposed within the first compartment, at least partially surrounding the outlet. The ?PP heater is disposed in thermal communication with the second substrate portion. The ?PHI device comprises third and fourth substrate portions, a second collection material, and a plurality of ?PHI heaters. The third and fourth substrate portions cooperate to define a second compartment. The second collection material is disposed within the second compartment.Type: ApplicationFiled: September 7, 2023Publication date: December 28, 2023Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGANInventors: Edward T. ZELLERS, Changhua ZHAN, Robert W. HOWER, Joseph A. POTKAY
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Patent number: 11782033Abstract: A microscale collector and injector device comprises a microscale passive pre-concentrator (?PP) and a microscale progressively-heated injector (?PHI). The ?PP devices comprises first and second substrate portions, a first collection material, a ?PP heater, and an outlet. The first substrate portion defines an array of microscale diffusion channels. The first and second substrate portions cooperate to define a first compartment in fluid communication with the diffusion channels. The first collection material is disposed within the first compartment, at least partially surrounding the outlet. The ?PP heater is disposed in thermal communication with the second substrate portion. The ?PHI device comprises third and fourth substrate portions, a second collection material, and a plurality of ?PHI heaters. The third and fourth substrate portions cooperate to define a second compartment. The second collection material is disposed within the second compartment.Type: GrantFiled: January 18, 2019Date of Patent: October 10, 2023Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGANInventors: Edward T. Zellers, Changhua Zhan, Robert W. Hower, Joseph A. Potkay
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Patent number: 11759558Abstract: Disclosed herein are rolled-membrane microfluidic diffusion devices and corresponding methods of manufacture. Also disclosed herein are three-dimensionally printed microfluidic devices and corresponding methods of manufacture. Optionally, the disclosed microfluidic devices can function as artificial lung devices.Type: GrantFiled: April 3, 2018Date of Patent: September 19, 2023Assignee: United States Government as Represented by the Department of Veterans AffairsInventor: Joseph A. Potkay
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Publication number: 20230200734Abstract: A sensor apparatus includes at least one substrate layer of an elastically deformable material, the substrate layer extending longitudinally between spaced apart ends thereof. A conductive layer is attached to and extends longitudinally between the spaced apart ends of the at least one substrate layer. The conductive layer includes an electrically conductive material adapted to form a strain gauge having an electrical resistance that varies based on deformation of the conductive layer in at least one direction.Type: ApplicationFiled: February 13, 2023Publication date: June 29, 2023Inventors: Steve JA Majerus, Jeremy Dunning, Katherine M. Bogie, Joseph A. Potkay
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Publication number: 20230084914Abstract: Disclosed herein are rolled-membrane microfluidic diffusion devices and corresponding methods of manufacture. Also disclosed herein are three-dimensionally printed microfluidic devices and corresponding methods of manufacture. Optionally, the disclosed microfluidic devices can function as artificial lung devices.Type: ApplicationFiled: November 10, 2022Publication date: March 16, 2023Inventor: Joseph A. Potkay
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Patent number: 11576612Abstract: A sensor apparatus includes at least one substrate layer of an elastically deformable material, the substrate layer extending longitudinally between spaced apart ends thereof. A conductive layer is attached to and extends longitudinally between the spaced apart ends of the at least one substrate layer. The conductive layer includes an electrically conductive material adapted to form a strain gauge having an electrical resistance that varies based on deformation of the conductive layer in at least one direction.Type: GrantFiled: June 24, 2020Date of Patent: February 14, 2023Assignees: CASE WESTERN RESERVE UNIVERSITY, THE UNITED STATES AS REPRESENTED BY THE DEPARTMENT OF VETERANS AFFAIRSInventors: Steve J A Majerus, Jeremy Dunning, Katherine M. Bogie, Joseph A. Potkay
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Publication number: 20220323005Abstract: A sensor apparatus includes at least one substrate layer of an elastically deformable material, the substrate layer extending longitudinally between spaced apart ends thereof. A conductive layer is attached to and extends longitudinally between the spaced apart ends of the at least one substrate layer. The conductive layer includes an electrically conductive material adapted to form a strain gauge having an electrical resistance that varies based on deformation of the conductive layer in at least one direction.Type: ApplicationFiled: June 24, 2020Publication date: October 13, 2022Inventors: Steve JA Majerus, Jeremy Dunning, Katherine M. Bogie, Joseph A. Potkay
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Publication number: 20210371597Abstract: Provided are photocurable resins comprising a poly(siloxane)-based copolymer together with a photoinitiator, and other optional ingredients such as a photocurable diluent, a photoabsorber, a photosensitizer, or a hydrophillic additive. Also provided are methods of stereolithographically printing a 3-D object from a disclosed resin. Also provided is an improved method for stereolithographically printing a 3-D object, the improvement comprising the use of a disclosed photocurable resin. Further provided is a 3-D microfluidic device such as an artificial lung prepared from a disclosed photocurable resin.Type: ApplicationFiled: May 27, 2021Publication date: December 2, 2021Inventors: Joseph Potkay, Elyse Fleck
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Publication number: 20210228792Abstract: An artificial lung system for a patient having a membrane lung system having an gas inlet, a blood inlet, a blood outlet, and an exhaust; a gas system operably coupled to the gas inlet of the membrane lung system; a gas phase CO2 sensor disposed downstream of the exhaust of the membrane lung system and monitoring an exhaust gas CO2 (EGCO2) level and/or an blood oxygen saturation sensor disposed upstream of the blood inlet of the membrane lung system and monitoring a blood oxygen saturation level; and a feedback controller receiving the CO2 signal and/or blood oxygen saturation signal and outputting a control signal to control gas flow and/or blood flow.Type: ApplicationFiled: June 18, 2019Publication date: July 29, 2021Inventors: Joseph POTKAY, Robert H. BARTLETT, Alvaro ROJAS-PENA
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Publication number: 20200232954Abstract: A microscale collector and injector device comprises a microscale passive pre-concentrator (?PP) and a microscale progressively-heated injector (?PHI). The ?PP devices comprises first and second substrate portions, a first collection material, a ?PP heater, and an outlet. The first substrate portion defines an array of microscale diffusion channels. The first and second substrate portions cooperate to define a first compartment in fluid communication with the diffusion channels. The first collection material is disposed within the first compartment, at least partially surrounding the outlet. The ?PP heater is disposed in thermal communication with the second substrate portion. The ?PHI device comprises third and fourth substrate portions, a second collection material, and a plurality of ?PHI heaters. The third and fourth substrate portions cooperate to define a second compartment. The second collection material is disposed within the second compartment.Type: ApplicationFiled: January 18, 2019Publication date: July 23, 2020Inventors: Edward T. ZELLERS, Changhua ZHAN, Robert W. HOWER, Joseph A. POTKAY
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Patent number: 10694999Abstract: A sensor apparatus includes at least one substrate layer of an elastically deformable material, the substrate layer extending longitudinally between spaced apart ends thereof. A conductive layer is attached to and extends longitudinally between the spaced apart ends of the at least one substrate layer. The conductive layer includes an electrically conductive material adapted to form a strain gauge having an electrical resistance that varies based on deformation of the conductive layer in at least one direction.Type: GrantFiled: October 12, 2018Date of Patent: June 30, 2020Assignees: CASE WESTERN RESERVE UNIVERSITY, THE UNITED STATES GOVERNMENT AS REPRESENTED BY THE DEPARTMENT OF VETERANS AFFAIRSInventors: Steve J A Majerus, Jeremy Dunning, Katherine M. Bogie, Joseph A. Potkay
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Publication number: 20200061271Abstract: Disclosed herein are rolled-membrane microfluidic diffusion devices and corresponding methods of manufacture. Also disclosed herein are three-dimensionally printed microfluidic devices and corresponding methods of manufacture. Optionally, the disclosed microfluidic devices can function as artificial lung devices.Type: ApplicationFiled: April 3, 2018Publication date: February 27, 2020Inventor: Joseph A. Potkay
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Publication number: 20190110747Abstract: A sensor apparatus includes at least one substrate layer of an elastically deformable material, the substrate layer extending longitudinally between spaced apart ends thereof. A conductive layer is attached to and extends longitudinally between the spaced apart ends of the at least one substrate layer. The conductive layer includes an electrically conductive material adapted to form a strain gauge having an electrical resistance that varies based on deformation of the conductive layer in at least one direction.Type: ApplicationFiled: October 12, 2018Publication date: April 18, 2019Inventors: Steve JA Majerus, Jeremy Dunning, Katherine M. Bogie, Joseph A. Potkay
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Patent number: 7192001Abstract: A microvalve device includes a semiconductor-based valve housing that defines a flow passage, and a valve face disposed within the valve housing and in fluid communication with the flow passage. The microvalve device further includes a thermal expansion actuator that drives movement of the valve face from a first position to a second position relative to the flow passage, and a capacitor that holds the valve face in the second position. The microvalve may also include an insulating layer disposed on portions of the semiconductor-based valve housing, and a capacitance sensor for monitoring a capacitance level to determine when the valve face reaches the second position. Once the sensor indicates that the second position has been reached, power is no longer applied to the thermal expansion actuator such that power is only substantially consumed during the transition from the first position to the second position.Type: GrantFiled: May 10, 2004Date of Patent: March 20, 2007Assignee: The Regents of the University of Michigan Office of Technology TransferInventors: Kensall D. Wise, Joseph A. Potkay
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Publication number: 20050001182Abstract: A microvalve device includes a semiconductor-based valve housing that defines a flow passage, and a valve face disposed within the valve housing and in fluid communication with the flow passage. The microvalve device further includes a thermal expansion actuator that drives movement of the valve face from a first position to a second position relative to the flow passage, and a capacitor that holds the valve face in the second position. The microvalve may also include an insulating layer disposed on portions of the semiconductor-based valve housing, and a capacitance sensor for monitoring a capacitance level to determine when the valve face reaches the second position. Once the sensor indicates that the second position has been reached, power is no longer applied to the thermal expansion actuator such that power is only substantially consumed during the transition from the first position to the second position.Type: ApplicationFiled: May 10, 2004Publication date: January 6, 2005Inventors: Kensall Wise, Joseph Potkay
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Patent number: 6838640Abstract: A high-sensitivity, separation microcolumn assembly for a microgas chromatograph and the like is provided. The assembly has an ultra-low mass complete with integrated heaters. The assembly uses multiple zones for temperature control, and microstructures that permit very rapid heating and cooling of the microcolumn.Type: GrantFiled: May 13, 2003Date of Patent: January 4, 2005Assignee: The Regents of the University of MichiganInventors: Kensall D. Wise, Richard Sacks, Katharine T. Beach, Joseph A. Potkay, Masoud Agah
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Publication number: 20040255643Abstract: A high-performance separation microcolumn assembly and method for making such an assembly are provided. The assembly includes high-performance Si-glass &mgr;GC separation columns having integrated heaters and temperatures sensors for temperature programming and integrated pressure sensors for flow control. These columns, integrated on a die, are fabricated using a silicon-on-glass dissolved-wafer-process. The TCR of the temperature sensors and the sensitivity of the pressure sensors satisfy the requirements needed to achieve reproducible separations in a &mgr;GC system. Using these columns, highly-resolved multiple-component separations were obtained with analysis times a factor of two faster than isothermal responses.Type: ApplicationFiled: June 4, 2004Publication date: December 23, 2004Inventors: Kensall D. Wise, Richard Sacks, Joseph A. Potkay, Masoud Agah
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Publication number: 20030233862Abstract: A high-sensitivity, separation microcolumn assembly for a microgas chromatograph and the like is provided. The assembly has an ultra-low mass complete with integrated heaters. The assembly uses multiple zones for temperature control, and microstructures that permit very rapid heating and cooling of the microcolumn.Type: ApplicationFiled: May 13, 2003Publication date: December 25, 2003Inventors: Kensall D. Wise, Richard Sacks, Katharine T. Beach, Joseph A. Potkay, Masoud Agah