Patents by Inventor Nathan A. Mitchell

Nathan A. Mitchell 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).

  • Patent number: 11964117
    Abstract: An IV catheter system may have a catheter component and a needle component. The catheter component may have a catheter hub, a cannula extending distally from the catheter hub, and a push feature extending outward from the catheter hub. The push feature may have an outer surface that receives contact from a digit to move the IV catheter system from an insertion configuration, in which the needle is within the cannula, to a fluid delivery configuration, in which the needle is outside the catheter hub. The needle component may have a needle hub and a needle extending distally from the needle hub along an axis. The push feature may be formed of a flexible material that causes the push feature, in response to pressure exerted on the outer surface by a dressing securing the catheter component to a patient, to deflect the outer surface toward the cannula axis.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: April 23, 2024
    Assignee: Becton, Dickinson and Company
    Inventors: Michael Garrison, Bart D. Peterson, Ralph L. Sonderegger, Jonathan Karl Burkholz, Nathan Mitchell
  • Patent number: 11939547
    Abstract: Pre-ground plastics of small particle size not more than 2 mm are co-fed into a solid fossil fuel fed entrained flow partial oxidation gasifier. High solids concentrations in the feedstock stream can be obtained without significant impact on the feedstock stream stability and pumpability. A consistent quality of syngas can be continuously produced, including generation of carbon dioxide and a carbon monoxide/hydrogen ratio while stably operating the gasifier and avoiding the high tar generation of fluidized bed or fixed bed waste gasifiers and without impacting the operations of the gasifier. The subsequent syngas produced from this material can be used to produce a wide range of chemicals.
    Type: Grant
    Filed: May 17, 2022
    Date of Patent: March 26, 2024
    Assignee: Eastman Chemical Company
    Inventors: William Lewis Trapp, Justin William Murphy, Nathan Mitchell West
  • Patent number: 11939406
    Abstract: Densified textile aggregates are co-fed with a fuel into a partial oxidation gasifier. High solids concentrations in the feedstock composition can be obtained without significant impact on the feedstock composition stability and pumpability. A consistent quality of densified textile derived syngas can be continuously produced, including generation of carbon dioxide and a carbon monoxide/hydrogen ratio while stably operating the gasifier and avoiding the high tar generation of fluidized bed or fixed bed waste gasifiers and without impacting the operations of the gasifier. The densified textile derived syngas quality, composition, and throughput are suitable for produce a wide range of chemicals and polymers, including methanol, acetic acid, methyl acetate, acetic anhydride, and cellulose esters through a variety of reaction schemes in which at least a portion of the chemical or polymer originates with densified textile derived syngas.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: March 26, 2024
    Assignee: Eastman Chemical Company
    Inventors: William Lewis Trapp, Justin William Murphy, Nathan Mitchell West
  • Patent number: 11939546
    Abstract: Pre-ground plastics of small particle size not more than 2 mm are co-fed into a solid fossil fuel fed entrained flow partial oxidation gasifier. High solids concentrations in the feedstock stream can be obtained without significant impact on the feedstock stream stability and pumpability. A consistent quality of syngas can be continuously produced, including generation of carbon dioxide and a carbon monoxide/hydrogen ratio while stably operating the gasifier and avoiding the high tar generation of fluidized bed or fixed bed waste gasifiers and without impacting the operations of the gasifier. The subsequent syngas produced from this material can be used to produce a wide range of chemicals.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: March 26, 2024
    Assignee: Eastman Chemical Company
    Inventors: William Lewis Trapp, Justin William Murphy, Nathan Mitchell West
  • Publication number: 20240068971
    Abstract: A method for quantifying amounts of per- and poly-fluoroalkyl substances (PFAS) may use a PFAS detection system comprising a working electrode and one or more processors. The working electrode may have a polymer layer disposed on its surface that comprises a plurality of affinity sites for detecting a plurality of PFAS molecules. Each of the plurality affinity sites may have been created using a template PFAS. The method may comprise detecting, at the working electrode, a plurality PFAS molecules that have bonded to one or more of the plurality of affinity sites; and determining, by the one or more processors and based on the detected plurality of PFAS molecules that are bonded to the one or more affinity sites, a concentration of PFAS in an environment.
    Type: Application
    Filed: August 25, 2023
    Publication date: February 29, 2024
    Applicant: The MITRE Corporation
    Inventors: Jamie Amanda GROVE, Kathy T. HUYNH, Emiko ZUMBRO, Joseph John Patrick ROBERTS, Sean Mitchell OLIVER, Lindsey Jordan GOODNIGHT, Nathan Isaac WALTON
  • Patent number: 11802251
    Abstract: Pre-ground plastics of small particle size not more than 2 mm are co-fed into a solid fossil fuel fed entrained flow partial oxidation gasifier. A syngas composition can be made by charging an oxidant and a feedstock composition comprising recycle plastics and a solid fossil fuel to a gasification zone within a gasifier; gasifying the feedstock composition together with the oxidant in said gasification zone to produce said syngas composition; and discharging at least a portion of said syngas composition from said gasifier; wherein the recycled plastics are added to a feed point comprising a solid fossil fuel belt feeding a grinder after the solid fossil fuel is loaded on the belt, a solid fossil fuel belt feeding a grinder before the solid fossil fuel is loaded onto the belt, or a solid fossil fuel slurry storage tank containing a slurry of said solid fossil fuel ground to a size as the size fed to the gasification zone.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: October 31, 2023
    Assignee: Eastman Chemical Company
    Inventors: William Lewis Trapp, Justin William Murphy, Nathan Mitchell West
  • Publication number: 20230321405
    Abstract: An attachment for a catheter assembly may include a platform, which may include an upper surface and a bottom surface. The bottom surface may be configured to contact skin of a patient. At least a portion of the upper surface may be configured to support the catheter assembly. The upper surface may support the catheter assembly at an angle with respect to skin of the patient that is approximately equal to an insertion angle of a catheter of the catheter assembly. The attachment may include snap feature coupled to the upper surface of the platform. The attachment may include a blunt cannula extending distally from the snap feature. The blunt cannula and the portion of the upper surface may provide a generally straight pathway for an instrument inserted distally through the attachment into the catheter assembly.
    Type: Application
    Filed: June 12, 2023
    Publication date: October 12, 2023
    Inventors: Megan Scherich, Curtis H. Blanchard, Nathan Mitchell, Tyler Warner, David Myers
  • Patent number: 11717650
    Abstract: An attachment for a catheter assembly may include a platform, which may include an upper surface and a bottom surface. The bottom surface may be configured to contact skin of a patient. At least a portion of the upper surface may be configured to support the catheter assembly. The upper surface may support the catheter assembly at an angle with respect to skin of the patient that is approximately equal to an insertion angle of a catheter of the catheter assembly. The attachment may include snap feature coupled to the upper surface of the platform. The attachment may include a blunt cannula extending distally from the snap feature. The blunt cannula and the portion of the upper surface may provide a generally straight pathway for an instrument inserted distally through the attachment into the catheter assembly.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: August 8, 2023
    Assignee: Becton, Dickinson and Company
    Inventors: Megan Scherich, Curtis H Blanchard, Nathan Mitchell, Tyler Warner, David Myers
  • Publication number: 20230227622
    Abstract: Processes and facilities for using one or more PET-containing materials as a feedstock to a chemical recycling facility, and in particular a solvolysis facility, are provided herein. The PET-containing materials used as feedstock may comprise colored plastic-containing mixtures derived as products or co-products from plastic reclaimer facilities and/or municipal recycling facilities. Such mixtures are generally undesirable or unusable to mechanical PET recycling facilities, and typically are sent to landfills and/or incinerators. However, the processes and facilities described herein make use of the PET and other plastics present in these otherwise undesirable or unusable colored plastic-containing mixtures.
    Type: Application
    Filed: April 13, 2021
    Publication date: July 20, 2023
    Applicant: Eastman Chemical Company
    Inventors: Bruce Roger DeBruin, Michael Paul Ekart, Anne-Martine Sherbeck Jackson, Nathan Mitchell West, Zhufang Liu
  • Publication number: 20230220180
    Abstract: Processes and facilities for using one or more PET-containing materials as a feedstock to a chemical recycling facility, and in particular a solvolysis facility, are provided herein. The PET-containing materials used as feedstock may comprise a quantity of PET-containing solidified purge material. The PET-containing solidified purge material may be derived from various processes and facilities, including PET reclaimer facilities, manufacturers of PET articles, and/or a polymer manufacturing facilities. For example, he purge material may be the solidified purge material from an extrusion and/or pelletization process. Such solidified purge materials are generally undesirable or unusable to mechanical PET recycling facilities, and typically are sent to landfills and/or incinerators. However, the processes and facilities described herein make use of the PET and other plastics present in these otherwise undesirable or unusable solidified purge materials.
    Type: Application
    Filed: April 13, 2021
    Publication date: July 13, 2023
    Applicant: Eastman Chemical Company
    Inventors: Bruce Roger DeBruin, Michael Paul Ekart, Anne-Martine Sherbeck Jackson, Nathan Mitchell West, Zhufang Liu
  • Publication number: 20230212370
    Abstract: Processes and facilities for using one or more PET-containing materials as a feedstock to a chemical recycling facility, and in particular a solvolysis facility, are provided herein. The PET-containing materials used as feedstock may comprise a quantity of PET-containing dry fines. The PET-containing dry fines may be derived from various processes and facilities, including PET reclaimer facilities and/or manufacturers of PET articles. For example, the dry fines may be collected from solid-liquid separators and/or dust collectors from processes that include conveying, drying, densification, centrifugation processes, and/or grinding PET-containing plastic material. Such dry fines are generally undesirable or unusable to mechanical PET recycling facilities, and typically are sent to landfills and/or incinerators. However, the processes and facilities described herein make use of the PET and other plastics present in these otherwise undesirable or unusable dry fines.
    Type: Application
    Filed: April 13, 2021
    Publication date: July 6, 2023
    Applicant: Eastman Chemical Company
    Inventors: Bruce Roger DeBruin, Michael Paul Ekart, Kyle Lyn Collings, Anne-Martine Sherbeck Jackson, Nathan Mitchell West, Zhufang Liu
  • Publication number: 20230203270
    Abstract: Chemical recycling facilities for processing mixed waste plastic are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy recovery facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.
    Type: Application
    Filed: April 13, 2021
    Publication date: June 29, 2023
    Applicant: Eastman Chemical Company
    Inventors: Bruce Roger DeBruin, Michael Paul Ekart, Anne-Martine Sherbeck Jackson, Nathan Mitchell West, Zhufang Liu
  • Publication number: 20230203268
    Abstract: Chemical recycling facilities for processing mixed waste plastic are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy recovery facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.
    Type: Application
    Filed: April 13, 2021
    Publication date: June 29, 2023
    Applicant: Eastman Chemical Company
    Inventors: Bruce Roger DeBruin, Michael Paul Ekart, Xianchun Wu, David Eugene Slivensky, Daryl Bitting, Anne-Martine Sherbeck Jackson, Nathan Mitchell West, Zhufang Liu
  • Publication number: 20230183439
    Abstract: Processes and facilities for using one or more PET-containing materials as a feedstock to a chemical recycling facility, and in particular a solvolysis facility, are provided herein. The PET-containing materials used as feedstock may comprise a quantity of PET and metal-containing reclaimer co-product. The PET and metal-containing reclaimer co-product may comprise a quantity of plastic articles, plastic flakes, and/or plastic fines, and may be derived from plastic reclaimer separation processes such as eddy current separators. Such metal-containing co-products are generally undesirable or unusable to mechanical PET recycling facilities, and typically are sent to landfills and/or incinerators. However, the processes and facilities described herein make use of the PET and other plastics present in these otherwise undesirable or unusable metal-containing co-products.
    Type: Application
    Filed: April 13, 2021
    Publication date: June 15, 2023
    Applicant: Eastman Chemical Company
    Inventors: Bruce Roger DeBruin, Michael Paul Ekart, Anne-Martine Sherbeck Jackson, Nathan Mitchell West, Zhufang Liu
  • Publication number: 20230183441
    Abstract: Processes and facilities for using one or more PET-containing materials as a feedstock to a chemical recycling facility, and in particular a solvolysis facility, are provided herein. The PET-containing materials used as feedstock may comprise a quantity of PET and PVC-containing reclaimer flake reject. The PET and PVC-containing reclaimer flake reject may be derived from various plastic reclaimer separation processes, including density separation. Such flake reject materials are generally undesirable or unusable to mechanical PET recycling facilities due to the PVC content, and typically are sent to landfills and/or incinerators. However, the processes and facilities described herein make use of the PET and other plastics present in these otherwise undesirable or unusable flake reject materials.
    Type: Application
    Filed: April 13, 2021
    Publication date: June 15, 2023
    Applicant: Eastman Chemical Company
    Inventors: Bruce Roger DeBruin, Michael Paul Ekart, Anne-Martine Sherbeck Jackson, Nathan Mitchell West, Zhufang Liu
  • Publication number: 20230183443
    Abstract: Chemical recycling facilities for processing mixed waste plastic are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy recovery facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.
    Type: Application
    Filed: April 13, 2021
    Publication date: June 15, 2023
    Applicant: Eastman Chemical Company
    Inventors: Bruce Roger DeBruin, Michael Paul Ekart, David Milton Lange, Aaron Nathaniel Edens, Anne-Martine Sherbeck Jackson, Nathan Mitchell West, Zhufang Liu
  • Patent number: 11615793
    Abstract: Methods, systems, apparatus, and computer-readable media for providing a voice assistant for to leverage information from sensing devices. In some implementations, one or more computers receive measurement data generated by a sensing device associated with a user. The one or more computers store the measurement data in association with an identifier for the user. The one or more computers obtain text of an utterance of the user detected by a client device associated with the user through a voice interface provided by the client device. The one or more computers access the measurement data associated with the user, and in response to obtaining the text of the utterance, generate a response to the utterance based on the text of the utterance and the stored measurement data. The one or more computers provide response data indicating the generated response.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: March 28, 2023
    Assignee: Centene Corporation
    Inventors: Jeremy J. Corbett, Khris Baker, Jodi Augustyniak, Nathan Mitchell
  • Publication number: 20220362510
    Abstract: A catheter adapter may include a distal end, a proximal end, an inner surface extending through the distal end and the proximal end and forming a lumen, and a side port forming a side port pathway through a sidewall of the catheter adapter and in fluid communication with the lumen. The catheter assembly may include a catheter extending distally from the distal end of the catheter adapter. The catheter assembly may include a septum disposed within the lumen proximal to the side port pathway. The catheter assembly may include one or more features to facilitate flushing of the catheter assembly: a diameter of the side port may increase in a distal direction; a portion of the inner surface proximal to the catheter and distal to the septum may include multiple grooves; the side port pathway may include a non-cylindrical portion; an insert; a rotation element; and a pivot element.
    Type: Application
    Filed: May 13, 2022
    Publication date: November 17, 2022
    Inventors: John Lackey, Jonathan Karl Burkholz, Yiping Ma, BreAnna Lackey, Ralph L. Sonderegger, Nathan Mitchell, Megan Scherich, Curtis H. Blanchard, Adam J. Boud, Taylor Eley, Shaun Lauer
  • Publication number: 20220315737
    Abstract: The present application discloses mixed ester terephthalate plasticizer compositions comprising: a compound of formula (I): a compound of formula (II): and a compound of formula (III): wherein R1, R2, and n are defined herein. The present application also discloses resin compositions, insulation layers and cables comprising the plasticizer compositions.
    Type: Application
    Filed: June 12, 2020
    Publication date: October 6, 2022
    Applicant: Eastman Chemical Company
    Inventors: Zhenpeng Li, Eric Jon Moskala, Nathan Mitchell West
  • Publication number: 20220299645
    Abstract: A remote 3D measurement and visualization apparatus which comprises a borescope, comprising a shaft; a time-of-flight (TOF) depth camera having a plurality of pixels; an illumination source to emit illumination source light; wherein an illumination transmission portion of the shaft is operatively arranged to transmit the illumination source light distally along the shaft and emit the illumination source light from a distal end of the borescope to illuminate a target volume; wherein an image transmission portion of the shaft is operatively arranged to receive reflected illumination source light from the target volume and transmit the reflected illumination source light proximally along the shaft to the TOF depth camera; and wherein the TOF depth camera is operatively arranged to transmit intensity and phase data of the reflected illumination source light from the pixels to a processor and/or a computer to generate a digital, three-dimensional, spatial representation of the target volume.
    Type: Application
    Filed: March 17, 2021
    Publication date: September 22, 2022
    Inventors: Joseph Nathan MITCHELL, Albert Joseph PARVIN, JR.