Patents Assigned to Rensselaer Polytechnic Institute
  • Patent number: 11969723
    Abstract: An anion exchange membrane is composed of a copolymer of 1,1-diphenylethylene and one or more styrene monomers, such as 4-tert-butylstyrene. The copolymer includes a backbone substituted with a plurality of ionic groups coupled to phenyl groups on the backbone via hydrocarbyl tethers between about 1 and about 7 carbons in length. High-temperature conditions enabled by these copolymers enhance conductivity performance, making them particularly suitable for use in anion exchange membranes in fuel cells, electrolyzers employing hydrogen, ion separations, etc. The properties of the membranes can be tuned via the degree of functionalization of the phenyl groups and selection of the functional groups, such as quaternary ammonium groups. Several processes can be used to incorporate the desired ionic functional groups into the polymers, such as chloromethylation, radical bromination, Friedel-Crafts acylation and alkylation, sulfonation followed by amination, or combinations thereof.
    Type: Grant
    Filed: September 2, 2022
    Date of Patent: April 30, 2024
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Sangwoo Lee, Chulsung Bae, Carrie Lynn Trant
  • Publication number: 20240134587
    Abstract: One embodiment provides a computing device. The computing device is configured to couple to a display. The computing device includes an ambient detection module configured to detect a characteristic of ambient light relative to at least a portion of a display area of the display. The computing device further includes a displayed image optimization module configured to optimize a feature of at least a portion of a displayed image based, at least in part, on the characteristic of the ambient light.
    Type: Application
    Filed: October 20, 2020
    Publication date: April 25, 2024
    Applicant: Rensselaer Polytechnic Institute
    Inventor: Michael Shur
  • Patent number: 11965197
    Abstract: Disclosed herein are novel microbial polycultures of two or more cell strains, capable of producing flavanones, flavonoids, and anthocyanidin-3-O-glucosides, and methods of use thereof. Also disclosed is a microbial cell capable of producing phenylpropanoic acids, and methods of use thereof.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: April 23, 2024
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Mattheos Koffas, John Andrew Jones
  • Publication number: 20240122626
    Abstract: A fixation device includes a body having a first axial end and a second axial end defining a longitudinal axis. The body has a longitudinal bore therein, and a longitudinal slot in a first side of the body extending laterally to the bore. A mounting bracket is connected to the first axial end at a second side opposite the slot and extends outward therefrom. The mounting bracket is configured to be mounted to a first structure. A support member is retained in the bore and is configured to move longitudinally in the bore. The support member protrudes outward from the first side of the body to support a second structure a longitudinal distance from the first structure. A lead screw engages a threaded hole in the base whereby rotation of the lead screw moves the support member to adjust the longitudinal distance between the first and second structures.
    Type: Application
    Filed: October 18, 2023
    Publication date: April 18, 2024
    Applicant: Rensselaer Polytechnic Institute
    Inventors: Luke Douglas Kaiser, Max Phoenix, John Lurie, Akanksha Singh, Mousa Hamad
  • Patent number: 11958020
    Abstract: A method of assessing a membrane, including calculating fluid dynamic characteristics of at least one of a membrane and a material to be passed through the membrane, where the material comprises particles; obtaining characteristic of at least one force acting on the particles of the material to be passed through the membrane due to the interaction between the particles and the membrane, the at least one force being an intermolecular force; combining the calculated fluid dynamic characteristic and the obtained characteristics to assess the flow of the material through the membrane; and optimizing at least one characteristics of the membrane in relation to the material. The membrane includes a plurality of rows and a plurality of teardrop structures arranged in the plurality of rows. The teardrop structures in each row are arranged at substantially the same angle with respect to an anticipated direction of flow through the membrane.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: April 16, 2024
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Georges Belfort, Joel L. Plawsky, Corey Christopher Woodcock, Mirco Sorci, Dustin J. Andersen
  • Patent number: 11955575
    Abstract: A system for providing a solar harvesting building envelope is disclosed. The system includes a plurality of solar harvesting apparatus configured to be installed as or on a building envelope in a manner like that of traditional shingles or siding. The apparatus includes a frame having a photovoltaic end wall, and reflective base and side walls. A translucent, wedge-shaped body layer is positioned on the frame. A luminescent species film is positioned at and substantially parallel to a base of the wedge-shaped body layer, such that the luminescent species film is positioned at an angle relative to the photovoltaic end wall. Light incident on the wedge-shaped body layer is concentrated towards the photovoltaic end wall, such as through absorption and re-emission along with scattering by the luminescent species film and internal reflection by the wedge-shaped body layer and the reflective base and side walls of the frame.
    Type: Grant
    Filed: January 5, 2022
    Date of Patent: April 9, 2024
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Michael Hughes, Diana-Andra Borca-Tasciuc, Deborah A. Kaminski
  • Publication number: 20240105875
    Abstract: A photodiode structure including a silicon substrate, an oxide layer on the silicon substrate, a silicon on insulator region on the oxide layer, a germanium absorption region, a silicon nitride waveguide, a cathode region, and an anode region is provided. The germanium absorption region is at least partially disposed in a recess of the silicon on insulator region. The germanium absorption region includes a top surface having a first width and a bottom surface having a second width, the first width being greater than the second width. The cathode region is formed at a first side of the germanium absorption region, and the anode region is formed at a second side of the germanium absorption region that is opposite the first side.
    Type: Application
    Filed: December 3, 2021
    Publication date: March 28, 2024
    Applicant: Rensselaer Polytechnic Institute
    Inventors: Asif Jahangir Chowdhury, Mona Mostafa Hella
  • Patent number: 11938472
    Abstract: The anion exchange membranes exhibit enhanced chemical stability and ion conductivity when compared with traditional styrene-based alkaline anion exchange membranes. A copolymer backbone is polymerized from a reaction medium that includes a diphenylalkylene and an alkadiene. The copolymer includes a plurality of pendant phenyl groups. The diphenyl groups on the polymer backbone are functionalized with one or more haloalkylated precursor substrates. The terminal halide from the precursor substrate can then be substituted with a desired ionic group. The diphenylethylene-based alkaline anion exchange membranes lack the ?-hydrogens sharing tertiary carbons with phenyl groups from polystyrene or styrene-based precursor polymers, resulting in higher chemical stability. The ionic groups are also apart from each other by about 3 to 6 carbons in the polymer backbone, enhancing ion conductivity. These membrane are advantageous for use in fuel cells, electrolyzers employing hydrogen, ion separations, etc.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: March 26, 2024
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Sangwoo Lee, Chulsung Bae, Musashi J. Briem, Sungmin Park
  • Publication number: 20240092740
    Abstract: 4-Hydroxybenzomorphans containing carboxamide or thiocarboxamide at the 3-position are useful as analgesics, anti-diarrheal agents, anticonvulsants, antitussives and anti-addiction medications.
    Type: Application
    Filed: April 17, 2023
    Publication date: March 21, 2024
    Applicant: Rensselaer Polytechnic Institute
    Inventor: Mark P. WENTLAND
  • Publication number: 20240093856
    Abstract: One embodiment provides a lens structure. The lens structure includes a backend. The backend includes a backend back surface and a backend front surface. The backend is configured to receive a luminous flux from a light source and to redirect the received luminous flux onto a lens. The redirected luminous flux is configured to increase a luminous efficacy.
    Type: Application
    Filed: January 26, 2022
    Publication date: March 21, 2024
    Applicant: Rensselaer Polytechnic Institute
    Inventors: Nadarajah Narendran, Akila Shan Udage
  • Patent number: 11937056
    Abstract: A method of multi-talker separation using a 3-tuple coprime microphone array, including generating, by a subarray signal processing module, a respective subarray data set for each microphone subarray of the 3-tuple coprime microphone array based, at least in part, on an input acoustic signal comprising at least one speech signal. The input acoustic signal is captured by the 3-tuple coprime microphone array. The 3-tuple coprime microphone array includes three microphone subarrays. The method includes determining, by the subarray signal processing module, a point by point product of the three subarray data sets; and determining, by the subarray signal processing module, a cube root of the point by point product to yield an acoustic signal output data. The acoustic signal output data has an output amplitude and an output phase corresponding to an input amplitude and an input phase of a selected speech signal of the at least one speech signal.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: March 19, 2024
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Dane Bush, Ning Xiang
  • Publication number: 20240085012
    Abstract: One embodiment provides a luminaire. The luminaire includes a light transfer structure, and a thermal management structure. The light transfer structure is configured to receive light from at least one light emitting diode (LED). The thermal management structure is configured to manage a thermal energy of the at least one LED. The light transfer structure and the thermal management structure are formed during a same three-dimensional (3D) printing process.
    Type: Application
    Filed: January 19, 2022
    Publication date: March 14, 2024
    Applicant: RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Nadarajah Narendran, Jean Paul Freyssinier, Ukwatte Lokuliyanage Indika Perera
  • Publication number: 20240066051
    Abstract: Prophylaxis and treatment of patients susceptible to infection by coronaviruses such as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is achieved using compositions including one or more inhibitors including sulfated glycans and/or highly negative charged compounds. The inhibitors bind to wild-type and variant spike glycoproteins (S-proteins or SGPs) of SARS-CoV-2, inhibiting fusion, entry, and infection of a host cell. The inhibitors can include pentosan polysulfate (PPS), mucopolysaccharide polysulfate (MPS), sulfated lactobionic acid, sulodexide, a defibrotide, 4-t-butylcalix[X] arene-p-sulfonic acid, or combinations thereof. The presence of additional sulfo groups in PPS and MPS contribute to the improved inhibitory activity of compositions with those sulfated glycans against COVID-19 compared with compositions containing heparin alone.
    Type: Application
    Filed: August 24, 2023
    Publication date: February 29, 2024
    Applicant: Rensselaer Polytechnic Institute
    Inventors: Robert John LINHARDT, Fuming ZHANG, Jawed FAREED, Walter JESKE
  • Publication number: 20240070938
    Abstract: In one embodiment, there is provided a dynamic multi-source image reconstruction apparatus. The apparatus includes a first reconstruction stage, a second reconstruction stage, and a refinement stage. The first reconstruction stage is configured to receive an input data set including a group of data frames. Each data frame corresponds to a respective time step. Each data frame includes a number of projection data sets. Each projection data set corresponds to a respective source-detector pair of a stationary multi-source tomography system. The first reconstruction stage is further configured to reconstruct a first intermediate image based, at least in part, on the group of data frames. The second reconstruction stage is configured to receive a selected data frame and to reconstruct a second intermediate image with a constraint of the first intermediate image as prior. The refinement stage is configured to refine the second intermediate image to produce a three-dimensional output image.
    Type: Application
    Filed: August 28, 2023
    Publication date: February 29, 2024
    Applicant: Rensselaer Polytechnic Institute
    Inventors: Ge Wang, Weiwen Wu, Yan Xi
  • Publication number: 20240054323
    Abstract: A decision network for moral decision-making includes a trained group artificial neural network (ANN), a trained individual ANN, and a fusion block. The trained group ANN is configured to receive a selected input vector and to produce an estimated en group output based, at least in part, on the selected input vector. The trained group ANN is trained based, at least in part, on group training data including a plurality of group input vectors and corresponding training group outputs. Each group input vector includes a plurality of scenario parameters. The trained individual ANN is configured to receive the selected input vector and to produce an estimated individual output based, at least in part, on the selected input vector. The trained individual ANN is trained after the trained group ANN is trained.
    Type: Application
    Filed: February 28, 2022
    Publication date: February 15, 2024
    Applicant: Rensselaer Polytechnic Institute
    Inventors: Ge Wang, Christopher Wiedeman, Uwe Kruger
  • Publication number: 20240046629
    Abstract: The present disclosure relates to an apparatus for enhancing contrast sensitivity and resolution in a grating interferometer by machine learning, which can improve both image contrast sensitivity and spatial resolution in a grating interferometer by machine learning, the apparatus including: an image acquisition unit; a numerical phantom generation unit, a convolution layer generation unit to extract features from input data; an activation function application calculation unit that can apply a rectified linear activation function to an output value of the convolution calculation to perform smooth repetitive machine learning; a CNN repetitive machine learning unit that corrects a convolution calculation factor while repeatedly performing forward propagation and backward propagation processes; and an image matching output unit that matches and outputs features extracted by repetitive machine learning of the CNN repetitive machine learning unit.
    Type: Application
    Filed: October 8, 2019
    Publication date: February 8, 2024
    Applicant: RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Seung Wook Lee, Seho Lee, Ge Wang
  • Publication number: 20240041412
    Abstract: A system for few-view computed tomography (CT) image reconstruction is described. The system includes a preprocessing module, a first generator network, and a discriminator network. The preprocessing module is configured to apply a ramp filter to an input sinogram to yield a filtered sinogram. The first generator network is configured to receive the filtered sinogram, to learn a filtered back-projection operation and to provide a first reconstructed image as output. The first reconstructed image corresponds to the input sinogram. The discriminator network is configured to determine whether a received image corresponds to the first reconstructed image or a corresponding ground truth image. The generator network and the discriminator network correspond to a Wasserstein generative adversarial network (WGAN). The WGAN is optimized using an objective function based, at least in part, on a Wasserstein distance and based, at least in part, on a gradient penalty.
    Type: Application
    Filed: October 18, 2023
    Publication date: February 8, 2024
    Applicant: RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Huidong Xie, Ge Wang, Hongming Shan, Wenxiang Cong
  • Publication number: 20240047071
    Abstract: A method of predicting bone fracture risk in a type 2 diabetes (“T2D”) patient includes: obtaining a plurality of averaged glycated hemoglobin (“HbA1c”) values for a plurality of T2D subjects over an observational period; binning the plurality of averaged HbA1c values into two predetermined categories; obtaining a plurality of total fracture incidences for the plurality of T2D subjects over a follow-up period; performing a plurality of linear regression model correlations between the binned HbA1c values and the plurality of total fracture incidences to determine a bone fracture rate prediction model; obtaining a measurement of an HbA1c value of the T2D patient; and analyzing the HbA1c value of the T2D patient with the bone fracture rate prediction model to determine the T2D patient's risk of bone fracture for a future period.
    Type: Application
    Filed: June 30, 2023
    Publication date: February 8, 2024
    Applicant: Rensselaer Polytechnic Institute
    Inventors: Deepak Vashishth, Bowen Wang
  • Patent number: 11892529
    Abstract: A transition metal dichalcogenides device includes a substrate, a bottom layer of boron nitride, a tungsten diselenide monolayer on the bottom layer of boron nitride, a top layer of boron nitride on the tungsten diselenide monolayer such that the bottom and top layers of boron nitride at least partially encapsulate the tungsten diselenide monolayer, a source electrode on the substrate, a drain electrode on the substrate, and a top gate electrode on the top layer of boron nitride. The tungsten diselenide monolayer is configured to reveal excitons when at least one of a K valley and a K? valley of the tungsten diselenide monolayer is exposed to excitation photon energy and an external magnetic field. The excitons are giant valley-polarized Rydberg excitons in excited states ranging from 2s to 11s when the external magnetic field is in the range of about ?17 T to about 17 T.
    Type: Grant
    Filed: December 30, 2021
    Date of Patent: February 6, 2024
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Sufei Shi, Tianmeng Wang
  • Publication number: 20240036135
    Abstract: In one embodiment, there is provided a magnetic resonance (MR) subsystem for magnetic resonance imaging (MRI). The MR subsystem includes a first magnet-coil assembly and a second magnet-coil assembly. The first magnet-coil assembly includes a first magnet structure and a first gradient coil. The second magnet-coil assembly includes a second magnet structure and a second gradient coil. The first magnet-coil assembly and the second magnet-coil assembly are separated by a gap. The gap is configured to facilitate transmission of an x-ray beam from an x-ray source to an x-ray detector. The x-ray source and the x-ray detector are included in a computed tomography (CT) subsystem.
    Type: Application
    Filed: July 31, 2023
    Publication date: February 1, 2024
    Applicant: Rensselaer Polytechnic Institute
    Inventors: Xun Jia, Ge Wang, Mengzhou Li, Weiwen Wu, Wenxiang Cong, Yuting Peng, Jace Grandinetti