Patents Assigned to Stellenbosch University
  • Patent number: 12241658
    Abstract: Systems and methods for calibrating a heliostat (104) are disclosed. An imaging device (100) is positioned and oriented so that a calibration target (130) reflected by the heliostat (103) is visible at the imaging device and an image taken. Multiple features of the reflected calibration target in the image are identified and used to determine a centroid of reflection within the image which is then mapped to a corresponding centroid position on the calibration target. A vector t that extends between the centroid position on the calibration target and a known position of the heliostat, as well as a vectors that extends between the known positions of the imaging device and of the heliostat, are determined. A normal vector n of the heliostat is determined as the vector that bisects s and t and is used to calibrate the heliostat by updating parameters of a heliostat tracking model.
    Type: Grant
    Filed: October 1, 2021
    Date of Patent: March 4, 2025
    Assignee: Stellenbosch University
    Inventor: Willem Jacobus Smit
  • Patent number: 12241887
    Abstract: An apparatus and system for measuring and monitoring fouling parameters in a fluid are provided. The apparatus includes a conduit within a housing, wherein at least a portion of the conduit provides a carbon dioxide permeable membrane through which carbon dioxide in the fluid can permeate in use. A carbon dioxide sensor within the housing is configured to measure carbon dioxide levels at the sensor. The housing further includes a light source that irradiates a portion of the conduit and a light sensor that is configured to measure light transmitted through or reflected by the irradiated portion of the conduit to measure the amount of fouling material within the fluid and attached to the irradiated portion of the conduit in use.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: March 4, 2025
    Assignee: STELLENBOSCH UNIVERSITY
    Inventors: Gideon Wolfaardt, Kyle Brent Klopper
  • Publication number: 20250009257
    Abstract: An anthropometric growth apparatus (101, 201, 501) for measuring the anthropometry of an infant is provided. The apparatus comprises a base (103, 203, 503) with a digital scale assembly (105, 205, 505) mounted to the base and configured to measure a weight of the infant. A digital length measurement assembly (107, 207, 507) is mounted to the base and configured to measure a length of the infant. A head circumference measurement assembly (109, 209, 509) is mounted to the base and includes an array of distance sensors (111, 211, 511) provided on a support (113, 213, 513) configured to position the array of distance sensors at a selected distance from the head of the infant for non-invasive measurement of the head circumference in use. The apparatus may further be used for body composition and gestational age determination.
    Type: Application
    Filed: November 17, 2022
    Publication date: January 9, 2025
    Applicant: STELLENBOSCH UNIVERSITY
    Inventors: Klara McCLUNAN, Evette VAN NIEKERK
  • Patent number: 12188946
    Abstract: Methods, devices, kits and computer-implemented methods for diagnosing (and optionally treating) tuberculous meningitis (TBM) are provided. In one embodiment, the method comprises testing a cerebrospinal fluid (CSF) sample from a subject suspected of having TBM for the presence of MPO and at least two other biomarkers, at least one of the other biomarkers being selected from the group consisting of IFN-?, sICAM-1, VEGF-A and CXCL8. For example, the method can comprise testing the sample for MPO, IFN-? and VEGF-A or for MPO, IFN-?, sICAM-1 and CXCL8. In another embodiment, the method comprises testing a blood sample from a subject suspected of having TBM for the presence of at least one biomarker selected from the group consisting of adipsin (complement factor D), Ab42 and IL-10, and at least two other biomarkers. In one example, the method comprises testing the sample for the presence of adipsin (complement factor D), Ab42 and EL-10.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: January 7, 2025
    Assignee: STELLENBOSCH UNIVERSITY
    Inventors: Novel Njweipi Chegou, Regan Shane Solomons, Gerhard Walzl, Masilo Charles Manyelo
  • Publication number: 20240425621
    Abstract: Terpolymers comprising optionally at least partially substituted styrene repeat units, N-alkylmaleimide repeat units and repeat units selected from the group consisting of maleic anhydride repeat units, maleic acid repeat units or maleic anhydride derivative repeat units and having a narrow molecular weight distribution are provided. The terpolymers may be used to solubilize lipid bilayers to form lipid nanodiscs and isolate membrane proteins.
    Type: Application
    Filed: December 14, 2022
    Publication date: December 26, 2024
    Applicant: Stellenbosch University
    Inventors: Lubertus Klumperman, Gestél Christine Kuyler
  • Patent number: 12173344
    Abstract: The present invention relates to a method of producing a heterologous polypeptide of interest in a host cell, wherein the method comprises expressing a fusion protein comprising the heterologous polypeptide of interest and a fluorescent fusion partner in a host cell modified to include a nucleic acid encoding a lytic protein operably linked to a promoter, wherein translation of the lytic protein is under control of an RNA thermometer. Also provided are E. coli cells which express the fusion protein and include a nucleic acid encoding a lytic protein operably linked to a promoter, wherein translation of the lytic protein regulated by an RNA thermometer.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: December 24, 2024
    Assignee: Stellenbosch University
    Inventors: Anton Du Preez van Staden, Carine Smith, Dominic Nicholas, Leon Milner Theodore Dicks, Ross Rayne Vermeulen
  • Patent number: 12168768
    Abstract: The present invention is directed to a yeast strain, or strains, secreting a full suite, or any subset of that full suite, of enzymes to hydrolyze corn starch, corn fiber, lignocellulose, (including enzymes that hydrolyze linkages in cellulose, hemicellulose, and between lignin and carbohydrates) and to utilize pentose sugars (xylose and arabinose). The invention is also directed to the set of proteins that are well expressed in yeast for each category of enzymatic activity. The resulting strain, or strains can be used to hydrolyze starch and cellulose simultaneously. The resulting strain, or strains can be also metabolically engineered to produce less glycerol and uptake acetate. The resulting strain, or strains can also be used to produce ethanol from granular starch without liquefaction.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: December 17, 2024
    Assignees: DANSTAR FERMENT AG, STELLENBOSCH UNIVERSITY
    Inventors: Elena Brevnova, John E. McBride, Erin Wiswall, Kevin S. Wenger, Nicky Caiazza, Heidi Hau, Aaron Argyros, Frank Agbogbo, Charles F. Rice, Trisha Barrett, John S. Bardsley, Abigail Foster, Anne K. Warner, Mark Mellon, Ryan Skinner, Indraneel Shikhare, Riaan Den Haan, Chhayal V. Gandhi, Alan Belcher, Vineet B. Rajgarhia, Allan C. Froehlich, Kristen M. Deleault, Emily Stonehouse, Shital A. Tripathi, Jennifer Gosselin, Yin-Ying Chiu, Haowen Xu
  • Publication number: 20240378518
    Abstract: A system and method for operations management in a workplace environment incorporating human resources in an automated environment. The system includes a network of a plurality of modular shell components with each shell component configured to include data stores and plugin software components to autonomously manage data and decisions related to the operations of a resource or an activity in an automated environment. In the network, at least one of the shell components is configured for a human resource; at least one of the shell components is configured for a non-human resource; and at least one of the shell components is configured for an activity to be carried out by a human resource or a non-human resource. Each shell component includes a communication component to communicate with one or more other shell components to provide a scalable architecture.
    Type: Application
    Filed: May 25, 2022
    Publication date: November 14, 2024
    Applicant: STELLENBOSCH UNIVERSITY
    Inventors: Dale Eric Sparrow, Karel Kruger
  • Patent number: 11972535
    Abstract: A computer-implemented method and a system are provided for visualising colocalised fluorescence signals. The method accesses signal intensity data obtained from a first fluorescence channel and a second fluorescence channel in which the signal intensity data is associated with voxels in an image. A regression factor on the signal intensity data is calculated to generate a regression parameter corresponding to a degree of correlation between the signal intensity data obtained from the first and second fluorescence channels The signal intensity data is mapped to the regression parameter and colourmap values are assigned to each voxel based on the mapped signal intensity data in which colourmap values of voxels embodying poorly correlated signal intensity data are reduced. The method renders the voxels in the image in colours according to their colourmap values to visualise colocalisation in the image.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: April 30, 2024
    Assignee: STELLENBOSCH UNIVERSITY
    Inventors: Benjamin Loos, Thomas Richard Niesler, Rensu Petrus Theart
  • Patent number: 11944421
    Abstract: A needle is provided that has terminals located at or near its tip. The terminals are connectable to an impedance calculating circuit configured to enable the impedance calculating circuit to apply an alternating current input electrical signal to the terminals. The terminals are further configured to enable the impedance calculating circuit to measure a resultant electrical signal and calculate an impedance of biological tissue surrounding the tip. The needle may further include light transmitting media, that extends along the needle, and that is connectable to a light circuit. The light circuit may include an emitter/detector pair for transmitting light from the emitter, along the media, and emitting the light from the tip. A reflection of the emitted light may be transmitted from the tip to the detector and the light circuit may calculate the light absorption of the tissue.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: April 2, 2024
    Assignee: STELLENBOSCH UNIVERSITY
    Inventors: Pieter Rousseau Fourie, Tys Van Der Merwe
  • Patent number: 11944102
    Abstract: The invention provides siRNA molecules for use in controlling pest infestation. The siRNA molecules target the mature mRNA of D. noxia cprr1-8 in a region between nucleotides 464 and 774 of SEQ ID NO: 23, or an equivalent region of an ortholog of D. noxia cprr1-8. Ingestion of the siRNA molecule by a pest inhibits the biological activity of the pest. In one embodiment, the siRNA molecule comprises a polynucleotide which has at least 80% sequence identity to the sequence 5? UAAACAAUCGCAAGAAGCUGA 3? (SEQ ID NO: 1) and a polynucleotide which has at least 80% sequence identity to the sequence 5? AGCUUCUUGCGAUUGUUUAAG 3? (SEQ ID NO: 2). Compositions comprising the siRNA molecules, vectors encoding the siRNA molecules, and methods for using the siRNA molecules are also provided.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: April 2, 2024
    Assignee: Stellenbosch University
    Inventors: Anna-Maria Botha-Oberholster, Hendrik Willem Swiegers, Nicolaas Francois Visser Burger
  • Patent number: 11852629
    Abstract: A method, device and system for determining autophagic flux are claimed. The levels of proteins which change with increased or decreased autophagy are determined in a sample. The change in the level of each protein is quantified in order to obtain the autophagic flux. This can be compared to a sample flux range associated with autophagy dysfunction or ageing patterns. Diseases or conditions which may be diagnosed include neurodegenerative conditions such as Alzheimer's disease and dementia, cancer, heart conditions, immune conditions or aging-related conditions. The device for determining autophagic flux comprises a housing, receiving zones configured for receiving a substrate and a biological sample, and a set of electrodes for each receiving zone. The device is connectable to circuitry that determines an electrical property of each substrate and uses this to determine the autophagic flux.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: December 26, 2023
    Assignee: Stellenbosch University
    Inventors: Benjamin Loos, Jan Hendrik Servaas Hofmeyr, Willem Jacobus Perold, Andre Du Toit
  • Patent number: 11839335
    Abstract: A dispenser, a dispensing system and a dispensing method are disclosed. A plurality of dispensers may be implemented. The dispenser includes a flexible container having a top and a bottom and capable of holding a product therein, the flexible container including top and bottom openings. A rigid support structure that supports the flexible container is provided. A moveable dispensing arm that operatively facilitates product dispensing is also provided. The moveable dispensing arm is operable between a dispensing condition and a retaining condition, and it includes a pinching edge which is configured to pinch the flexible container shut in either the dispensing condition or the retaining condition of the dispensing arm.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: December 12, 2023
    Assignee: STELLENBOSCH UNIVERSITY
    Inventor: Kimberly Ann Kasper
  • Publication number: 20230392177
    Abstract: The present invention relates to a method of producing a heterologous polypeptide of interest in a host cell, wherein the method comprises expressing a fusion protein comprising the heterologous polypeptide of interest and a fluorescent fusion partner in a host cell modified to include a nucleic acid encoding a lytic protein operably linked to a promoter, wherein translation of the lytic protein is under control of an RNA thermometer. Also provided are E. coli cells which express the fusion protein and include a nucleic acid encoding a lytic protein operably linked to a promoter, wherein translation of the lytic protein regulated by an RNA thermometer.
    Type: Application
    Filed: November 16, 2021
    Publication date: December 7, 2023
    Applicant: Stellenbosch University
    Inventors: Anton Du Preez van Staden, Carine Smith, Dominic Nicholas, Leon Milner Theodore Dicks, Ross Rayne Vermeulen
  • Patent number: 11833179
    Abstract: A probiotic composition comprising Bacillus amyloliquefaciens, Enterococcus faecalis, Lactobacillus salivarius, Lactobacillus johnsonii, Lactobacillus gallinarum and Lactobacillus crispatus is provided. The probiotic composition stimulates the immune response of chickens without negatively affecting growth performance. The probiotic composition can be added to poultry feed to improve the health and performance of chickens, and can be used as a replacement for antibiotic supplementation.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: December 5, 2023
    Assignee: Stellenbosch University
    Inventors: Deon Pieter Neveling, Leon Milner Theodore Dicks
  • Publication number: 20230366880
    Abstract: This invention relates to methods of diagnosing COVID-19 disease, preferably post-acute COVID-19 syndrome, in a subject using a fluorescent or microscopy detection method to detect persistent anomalous (amyloid) clotlets in the sample, wherein the presence of persistent anomalous (or amyloid) clotlets in the sample, particularly clotlets that are resistant to fibrinolysis, is indicative of either acute COVID-19 disease or post-acute COVID-19 syndrome in the subject. The invention also relates to diagnostic kits for diagnosing acute COVID-19 disease, in particular post-acute COVID-19 syndrome, in a subject based on the methods disclosed.
    Type: Application
    Filed: April 20, 2022
    Publication date: November 16, 2023
    Applicant: Stellenbosch University
    Inventor: Etheresia PRETORIUS
  • Patent number: 11814402
    Abstract: This invention relates to a series of binuclear palladacycle compounds, and methods for the production of these compounds, that are suitable for use in the treatment of cancer. In particular embodiments, R1 is phenyl substituted with two occurrences of isopropyl, R2 is Cl, and R3 is independently one or more substituents selected from —O(CH2)2O(CH2)2OH, —O(CH2)2O(CH2)2O(CH2)2OH, —O(CH2)2OH, and —O(CH2)2O(CH2)2OCH3.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: November 14, 2023
    Assignees: Stellenbosch University, University of Cape Town
    Inventors: Angelique Blanckenberg, Annick Van Niekerk, Selwyn Frank Mapolie, Sharon Prince
  • Publication number: 20230341151
    Abstract: Systems and methods for calibrating a heliostat (104) are disclosed. An imaging device (100) is positioned and oriented so that a calibration target (130) reflected by the heliostat (103) is visible at the imaging device and an image taken. Multiple features of the reflected calibration target in the image are identified and used to determine a centroid of reflection within the image which is then mapped to a corresponding centroid position on the calibration target. A vector t that extends between the centroid position on the calibration target and a known position of the heliostat, as well as a vectors that extends between the known positions of the imaging device and of the heliostat, are determined. A normal vector nof the heliostat is determined as the vector that bisects s and t and is used to calibrate the heliostat by updating parameters of a heliostat tracking model.
    Type: Application
    Filed: October 1, 2021
    Publication date: October 26, 2023
    Applicant: Stellenbosch University
    Inventor: Willem Jacobus Smit
  • Publication number: 20230340450
    Abstract: The present invention relates to a bioreactor for the catalytic conversion of a substrate to a product using an immobilized enzyme. The immobilized enzyme is a histidine tagged enzyme, which binds to a nickel-nanoparticle coated cellulose matrix which is housed within the bioreactor. The invention also relates to methods of producing products by enzymatic catalysis using the bioreactor of the invention.
    Type: Application
    Filed: June 22, 2021
    Publication date: October 26, 2023
    Applicant: STELLENBOSCH UNIVERSITY
    Inventors: Bianke Loedolff, Dominic Nicholas, Ethan Wade Hunter, Leon Milner Dicks, Nicholas George Enslin, Shaun Wayne Peters
  • Patent number: 11613782
    Abstract: The invention provides a gene signature for use in determining a likelihood of a latent tuberculosis (TB) infection in a subject transitioning to active TB disease. The gene signature comprises at least SEPT4 and BLK, and optionally also GAS6 and/or CD1C. Expression levels of these genes are detected in a sample from the subject, and the ratios of expression of at least two of the above genes are calculated (e.g. SEPT4:BLK, SEPT4:CD1C, GAS6:BLK and/or GAS6:CD1C). A score is assigned to each ratio, the score being indicative of the likelihood of the latent TB infection transitioning into active TB disease, based on the ratio for the respective gene pair. The subject can be identified as having a latent TB infection that is likely to transition into active TB disease or that is not likely to transition into active TB disease based on the score or on the average of the scores.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: March 28, 2023
    Assignees: UNIVERSITY OF CAPE TOWN, STELLENBOSCH UNIVERSITY, SEATTLE CHILDREN'S HOSPITAL, MAX-PLANCK-GESELLSCHAFT ZUR FOERDERUNG DER WISSENSCHAFTEN E.V, UNITED KINGDOM RESEARCH AND INNOVATION
    Inventors: Sara Suliman, Ethan Greene Thompson, Jayne Suzanne Sutherland, Stefan H. E. Kaufmann, Thomas Jens Scriba, Daniel Edward Zak, Gerhard Walzl