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公开(公告)号：US20180249952A1
公开(公告)日：2018-09-06
申请号：US15723157
申请日：2017-10-02
Applicant: Purdue Research Foundation
Inventor： Babak Ziaie , Manuel P. Ochoa , Vaibhav Jain , Rahim Rahimi
CPC classification number: A61B5/4875 , A61B5/0537 , A61B5/14517 , A61B5/6833 , A61B2503/10 , A61B2560/0412 , A61B2562/0214 , A61B2562/04 , A61B2562/12
Abstract: A wearable paper-based platform with simultaneous passive and active feedback for monitoring perspiration is provided. The sensor platform comprises two modules: a disposable wicking-based sweat collection patch with discrete colorimetric feedback, and a reusable electronic detachable module for active feedback. The disposable patch comprises a hygroscopic wicking material laminated between two polymeric films. The wicking material is patterned with a radial finger design that offers discretized visual readout of the sensor. The active module attaches to the film and alerts the user when the film collects a pre-determined volume of sweat. The multi-feedback system allows high-performance athletes who value objective quantification of perspiration to better assess their sweat loss during physical activities.
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公开(公告)号：US20240408281A1
公开(公告)日：2024-12-12
申请号：US18807880
申请日：2024-08-16
Applicant: Purdue Research Foundation
Inventor： Rahim Rahimi , Amin Zareei , Ian B. Woodhouse
Abstract: The present disclosure relates to a novel oxygen-generating biodegradable mesh material, and to methods of making and using the novel oxygen-generating biodegradable mesh material. More specifically, a novel surgical mesh has been developed, wherein the surgical mesh has a flexible basic structure and comprises a plurality of pores, wherein the surgical mesh has a first face and a second opposite face, wherein the surgical mesh is made of a substantially homogeneous material comprising a biodegradable polymeric material and an oxygen-generating material.
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公开(公告)号：US20240382730A1
公开(公告)日：2024-11-21
申请号：US18691452
申请日：2022-09-14
Applicant: Purdue Research Foundation
Inventor： Rahim Rahimi
Abstract: A medical patch may include a flexible substrate and a plurality of water-soluble microneedles extending from a surface of the substrate. The water-soluble microneedles may include polyvinylpyrrolidone (PVP) and calcium peroxide (CPO). Application of the medical patch to a wound causes the PVP to dissolve and the CPO to interact with the water and form hydrogen peroxide and oxygen.
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公开(公告)号：US20230358700A1
公开(公告)日：2023-11-09
申请号：US18103592
申请日：2023-01-31
Applicant: Purdue Research Foundation
Inventor： Rahim Rahimi
CPC classification number: G01N27/223 , B23K26/21 , B23K26/38
Abstract: A humidity sensor may include a metalized substrate comprising a laser ablated portion and a remaining metal portion. The remaining metal portion may include a spiral inductor and an interdigitated capacitor. The interdigitated capacitor may be coupled in parallel with the spiral inductor. The interdigitated capacitor may be centrally positioned with respect to the spiral inductor and surrounded by spirals of the spiral inductor. The spiral inductor and interdigitated capacitor may be formed by selectively ablating the metallized substrate to define the inductor and capacitor.
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公开(公告)号：US20230221274A1
公开(公告)日：2023-07-13
申请号：US18123042
申请日：2023-03-17
Applicant: Purdue Research Foundation
Inventor： Sarath Gopalakrishnan , Jose Waimin , Rahim Rahimi , Nithin Raghunathan
CPC classification number: G01N33/246 , G01N27/223 , G01N2033/245
Abstract: A batteryless, chipless, sensor is disclosed which includes a substrate, at least two conductive strips disposed on the substrate, a passivation layer encasing the substrate and the at least two conductive strips, wherein the conductive strips are adapted to respond to an interrogation signal from a reader having a first polarization, with a response signal at a second polarization different than the first polarization.
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Patent Agency Ranking
公开(公告)号：US11552240B2
公开(公告)日：2023-01-10
申请号：US16571794
申请日：2019-09-16
Applicant: Purdue Research Foundation
Inventor： Mukerrem Cakmak , Armen Yildirim , Rahim Rahimi , Saeed Mohammadi , Ali Shakouri
IPC: H01L41/193 , G01L1/18 , G01L9/06 , H01L41/047 , H01L41/187 , H01L41/08 , H01L41/09 , H01L41/113
Abstract: A sensor is disclosed which includes a piezoelectric layer, a piezoresistive layer, one or more electrode layers coupled to the piezoelectric layer and to the piezoresistive layer, the piezoelectric layer configured to provide an electrical signal in response to application of a dynamic disturbance, and the piezoresistive layer configured to provide a change in resistivity in response to application of a static disturbance.
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公开(公告)号：US20220214462A1
公开(公告)日：2022-07-07
申请号：US17569031
申请日：2022-01-05
Applicant: Purdue Research Foundation
Inventor： Rahim Rahimi
Abstract: A printed radiation sensor that includes a substrate, an interdigitated electrode, and a conductive polymeric film. The interdigitated electrode including a first electrode with a plurality of first electrode digits and a second electrode with a plurality of second electrode digits. The interdigitated electrode disposed on the substrate. The conductive polymeric film including a blend of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and polyvinyl alcohol (PVA). The PEDOT:PSS is configured to provide an electrically conductive medium. The PVA is configured to provide ductility and stability of the printed radiation sensor. Upon radiation exposure, the PVA is further configured to crosslink within a material matrix of the printed radiation sensor militating against the recombination of chain scission by forming a semi-interpenetrating polymer network (SIPN) with the PEDOT:PSS to provide an enhanced and stable impedance reading.
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公开(公告)号：US20220128504A1
公开(公告)日：2022-04-28
申请号：US17510999
申请日：2021-10-26
Applicant: Purdue Research Foundation
Inventor： Sarath Gopalakrishnan , Jose Waimin , Rahim Rahimi , Nithin Raghunathan
Abstract: A batteryless, chipless, sensor is disclosed which includes a substrate, at least two conductive strips disposed on the substrate, a passivation layer encasing the substrate and the at least two conductive strips, wherein the conductive strips are adapted to respond to an interrogation signal from a reader having a first polarization, with a response signal at a second polarization different than the first polarization.
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公开(公告)号：US10391683B2
公开(公告)日：2019-08-27
申请号：US15223971
申请日：2016-07-29
Applicant: Purdue Research Foundation
Inventor： Babak Ziaie , Rahim Rahimi
Abstract: A wearable accessory capable of communicating data to actuators or from sensors is disclosed. The wearable accessory includes a conductor wire disposed in a moldable medium according to a predetermined pattern, the moldable medium being an electrically insulating material, the conductor wire terminating at an input and an output.
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公开(公告)号：US12117413B2
公开(公告)日：2024-10-15
申请号：US18123042
申请日：2023-03-17
Applicant: Purdue Research Foundation
Inventor： Sarath Gopalakrishnan , Jose Waimin , Rahim Rahimi , Nithin Raghunathan
CPC classification number: G01N27/223 , G01N33/246 , G01N33/245
Abstract: A batteryless, chipless, sensor is disclosed which includes a substrate, at least two conductive strips disposed on the substrate, a passivation layer encasing the substrate and the at least two conductive strips, wherein the conductive strips are adapted to respond to an interrogation signal from a reader having a first polarization, with a response signal at a second polarization different than the first polarization.
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