Patents by Inventor C. Ludwig

C. Ludwig 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: 12274811
    Abstract: Dural repair devices that are configured to effectively and reliably repair the damage of a dural tear due to incidental durotomies are provided, along with methods of use. The devices and methods enhance the ability of a surgeon to repair a patent's dura mater, or dura, during surgery of the central nervous system. The dural repair device has a multi-layer structure configured to exert a pressure or tamponade effect to compress a patient's dura to its state prior to the spinal surgery. Thus, the dural repair devices and methods of use may reduce the patient's risk morbidity, further surgery, spinal headaches, or other injuries and discomforts.
    Type: Grant
    Filed: June 2, 2023
    Date of Patent: April 15, 2025
    Assignee: UNIVERSITY OF MARYLAND, BALTIMORE
    Inventors: Charles Sansur, Steven C. Ludwig
  • Publication number: 20250000657
    Abstract: An implantable device for sacroiliac (“SI”) joint fusion and an associated method employ an SI joint fusion portion and an anchor portion of smaller diameter than the SI joint fusion portion and that extends distally from a distal end of the SI joint fusion portion. The SI joint fusion portion is externally threaded and is configured to, when surgically implanted, extend across the SI joint. The anchor portion in turn extends distally from the SI joint fusion portion and is configured for implanting entirely within the patient's ilium adjacent the SI joint. In certain configurations, the joint fusion portion is configured to enable fixation of spinal equipment at a proximal end of the joint fusion portion. A stabilizing driver is additionally provided to aid in placement of the device when obstructions are present.
    Type: Application
    Filed: September 13, 2024
    Publication date: January 2, 2025
    Inventors: Charles Sansur, Steven C. Ludwig, Ryan Smith
  • Publication number: 20230310168
    Abstract: Dural repair devices that are configured to effectively and reliably repair the damage of a dural tear due to incidental durotomies are provided, along with methods of use. The devices and methods enhance the ability of a surgeon to repair a patent's dura mater, or dura, during surgery of the central nervous system. The dural repair device has a multi-layer structure configured to exert a pressure or tamponade effect to compress a patient's dura to its state prior to the spinal surgery. Thus, the dural repair devices and methods of use may reduce the patient's risk morbidity, further surgery, spinal headaches, or other injuries and discomforts.
    Type: Application
    Filed: June 2, 2023
    Publication date: October 5, 2023
    Inventors: Charles SANSUR, Steven C. LUDWIG
  • Publication number: 20230285156
    Abstract: An implantable device for sacroiliac (“SI”) joint fusion and an associated method employ an SI joint fusion portion and an anchor portion of smaller diameter than the SI joint fusion portion and that extends distally from a distal end of the SI joint fusion portion. The SI joint fusion portion is externally threaded and is configured to, when surgically implanted, extend across the SI joint. The anchor portion in turn extends distally from the SI joint fusion portion and is configured for implanting entirely within the patient’s ilium adjacent the SI joint. In certain configurations, the joint fusion portion is configured to enable fixation of spinal equipment at a proximal end of the joint fusion portion.
    Type: Application
    Filed: March 13, 2023
    Publication date: September 14, 2023
    Inventors: Charles Sansur, Steven C. Ludwig, Ryan Smith
  • Patent number: 11672672
    Abstract: Dural repair devices that are configured to effectively and reliably repair the damage of a dural tear due to incidental durotomies are provided, along with methods of use. The devices and methods enhance the ability of a surgeon to repair a patients dura mater, or dura, during surgery of the central nervous system. The dural repair device has a multi-layer structure configured to exert a pressure or tamponade effect to compress a patient's dura to its state prior to the spinal surgery. Thus, the dural repair devices and methods of use may reduce the patients risk morbidity, further surgery, spinal headaches, or other injuries and discomforts.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: June 13, 2023
    Assignee: UNIVERSITY OF MARYLAND, BALTIMORE
    Inventors: Charles Sansur, Steven C. Ludwig
  • Publication number: 20220339292
    Abstract: In one aspect, the technology relates to a method of producing Ac, the method including preparing a phosphate-modified titania material to produce an ion-exchange material, contacting a solution including 229Th with the ion-exchange material to produce a Th-loaded titania material, eluting the Th-loaded titania material with a wash solution to produce an eluted solution containing eluted compounds including 225Ac, concentrating the eluted solution to generate eluted compounds including the 225Ac, and separating the 225Ac from the eluted compounds.
    Type: Application
    Filed: April 20, 2022
    Publication date: October 27, 2022
    Inventors: Ken Czerwinski, Sayandev Chatterjee, Zuolei Liao, Pyoungchung Kim, Vladislav P. Vlasenko, Russell C. Ludwig, Christopher P. Dunckley
  • Publication number: 20220209320
    Abstract: A lithium-ion battery assembly configured to provide electric power to a vehicle. The battery assembly includes a plurality of battery cells interconnected to provide a combined electrical potential between positive and negative terminals of the battery assembly, and a printed circuit board assembly (PCBA) disposed adjacent to a first array of battery cells of the plurality of battery cells. The PCBA includes a collector plate electrically coupled with the first array of battery cells, a temperature sensor configured to obtain temperature readings, a plurality of heaters configured to generate heat using electrical power, and an assembly processor. The assembly processor is configured to obtain readings from the temperature sensor, determine an estimated battery cell temperature, and initiate a heating program by delivering electrical power to the plurality of heaters from an electrical power source when the estimated battery cell temperature is below a threshold.
    Type: Application
    Filed: January 3, 2022
    Publication date: June 30, 2022
    Applicant: EControls, LLC
    Inventors: Kennon H. Guglielmo, Jason S. Souder, Brent C. Ludwig, Matthew J. Martin, Justin H. Sanders
  • Publication number: 20200345503
    Abstract: Interbody cages for spinal stabilization having a frame that surrounds a central compartment suitable for retaining biological material, such as bone graft material. The central compartment acts as a spill-free bone and biologic compartment that allows a surgeon to introduce the interbody cage into the body in an effective manner without spilling the biological material. Methods for introducing the interbody cages are disclosed.
    Type: Application
    Filed: July 21, 2020
    Publication date: November 5, 2020
    Applicant: UNIVERSITY OF MARYLAND, Baltimore
    Inventors: Charles SANSUR, Steven C. LUDWIG
  • Patent number: 10765525
    Abstract: Interbody cages for spinal stabilization having a frame that surrounds a central compartment suitable for retaining biological material, such as bone graft material. The central compartment acts as a spill-free bone and biologic compartment that allows a surgeon to introduce the interbody cage into the body in an effective manner without spilling the biological material. Methods for introducing the interbody cages are disclosed.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: September 8, 2020
    Assignee: UNIVERSITY OF MARYLAND, BALTIMORE
    Inventors: Charles Sansur, Steven C. Ludwig
  • Publication number: 20200268522
    Abstract: Dural repair devices that are configured to effectively and reliably repair the damage of a dural tear due to incidental durotomies are provided, along with methods of use. The devices and methods enhance the ability of a surgeon to repair a patients dura mater, or dura, during surgery of the central nervous system. The dural repair device has a multi-layer structure configured to exert a pressure or tamponade effect to compress a patient's dura to its state prior to the spinal surgery. Thus, the dural repair devices and methods of use may reduce the patients risk morbidity, further surgery, spinal headaches, or other injuries and discomforts.
    Type: Application
    Filed: September 12, 2018
    Publication date: August 27, 2020
    Inventors: Charles SANSUR, Steven C. LUDWIG
  • Publication number: 20190053910
    Abstract: Interbody cages for spinal stabilization having a frame that surrounds a central compartment suitable for retaining biological material, such as bone graft material. The central, compartment acts as a spill-free bone and biologic compartment that allows a surgeon to introduce the interbody cage into the body in an effective manner without spilling the biological material. Methods for introducing the interbody cages are disclosed.
    Type: Application
    Filed: July 27, 2018
    Publication date: February 21, 2019
    Applicant: University of Maryland, Baltimore
    Inventors: Charles SANSUR, Steven C. LUDWIG
  • Patent number: 9623977
    Abstract: A hybrid structure comprises a metallic built-up sandwich structure, and a monolithic superplastic formed and diffusion bonded structure joined to the built-up sandwich structure.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: April 18, 2017
    Assignee: The Boeing Company
    Inventors: Max R. Runyan, Daniel G. Sanders, Jack W. Mauldin, Brent C. Ludwig, John M. Comfort, Larry D. Hefti, Jason F. Joel
  • Publication number: 20150266586
    Abstract: A hybrid structure comprises a metallic built-up sandwich structure, and a monolithic superplastic formed and diffusion bonded structure joined to the built-up sandwich structure.
    Type: Application
    Filed: March 20, 2014
    Publication date: September 24, 2015
    Applicant: The Boeing Company
    Inventors: Max R. Runyan, Daniel G. Sanders, Jack W. Mauldin, Brent C. Ludwig, John M. Comfort, Larry D. Hefti, Jason F. Joel
  • Publication number: 20140012320
    Abstract: Exemplary spinal fixation devices, systems, and method are provided for stabilizing vertebrae in a patient's spine. In one exemplary embodiment, methods and devices are provided for coupling one or more bone anchors, such as hooks, screws, etc., and/or one or more spinal fixation elements, such as spinal rods, cables, plates, etc. In certain exemplary embodiments, a cross connector is provided for connecting and stabilizing two bone anchors, a bone anchor and a spinal fixation element, or a bone anchor and bone.
    Type: Application
    Filed: September 13, 2013
    Publication date: January 9, 2014
    Applicant: DEPUY SYNTHES PRODUCTS LLC
    Inventors: Steven C. Ludwig, Mark T. Hall, Thomas V. Doherty
  • Patent number: 8591550
    Abstract: Exemplary spinal fixation devices, systems, and method are provided for stabilizing vertebrae in a patient's spine. In one exemplary embodiment, methods and devices are provided for coupling one or more bone anchors, such as hooks, screws, etc., and/or one or more spinal fixation elements, such as spinal rods, cables, plates, etc. In certain exemplary embodiments, a cross connector is provided for connecting and stabilizing two bone anchors, a bone anchor and a spinal fixation element, or a bone anchor and bone.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: November 26, 2013
    Assignee: DePuy Spine, Inc.
    Inventors: Steven C. Ludwig, Mark T. Hall, Thomas V. Doherty
  • Patent number: 8556937
    Abstract: Exemplary spinal fixation devices, systems, and method are provided for stabilizing vertebrae in a patient's spine. In one exemplary embodiment, methods and devices are provided for coupling one or more bone anchors, such as hooks, screws, etc., and/or one or more spinal fixation elements, such as spinal rods, cables, plates, etc. In certain exemplary embodiments, a cross connector is provided for connecting and stabilizing two bone anchors, a bone anchor and a spinal fixation element, or a bone anchor and bone.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: October 15, 2013
    Assignee: Depuy Synthes Products, LLC
    Inventors: Steven C. Ludwig, Mark T. Hall, Thomas V. Doherty
  • Publication number: 20130007009
    Abstract: Automatically tagging individual users for identifying expertise or other relevant skills associated with the individual users based on various sources of information used or interacted with by the users is provided. After expertise tags are established for an individual user, the expertise tagging and other information about the user's profile and computing activities may be used for automatically suggesting a user for membership in one or more other project groups or workspaces that may be a good fit for the user's expertise or other relevant skills.
    Type: Application
    Filed: June 28, 2011
    Publication date: January 3, 2013
    Applicant: MICROSOFT CORPORATION
    Inventors: Nicholas Caldwell, Saliha Azzam, Jonathan C. Ludwig, Venkat Pradeep Chilakamarri, Courtney Anne O'Keefe
  • Patent number: 8192471
    Abstract: Exemplary spinal fixation devices, systems, and method are provided for stabilizing vertebrae in a patient's spine. In one exemplary embodiment, methods and devices are provided for coupling one or more bone anchors, such as hooks, screws, etc., and/or one or more spinal fixation elements, such as spinal rods, cables, plates, etc. In certain exemplary embodiments, a cross connector is provided for connecting and stabilizing two bone anchors, a bone anchor and a spinal fixation element, or a bone anchor and bone.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: June 5, 2012
    Assignee: DePuy Spine, Inc.
    Inventors: Steven C. Ludwig, Mark T. Hall, Thomas V. Doherty
  • Publication number: 20110179061
    Abstract: An analysis module, when triggered by a synchronization framework when a new data item is added to a project data store, runs a series of analysis feature extractors on the new content. An analysis may be conducted, and features of interest may be extracted from the data item. The analysis utilizes natural language processing, as well as other technologies, to provide an automatic or semi-automatic extraction of information. The extracted features of interest are saved as metadata within the project data store, and are associated with the data item from which it was extracted. The analysis module may be utilized to discover additional information that may be gleaned from content that is already in the project data store.
    Type: Application
    Filed: June 18, 2010
    Publication date: July 21, 2011
    Applicant: Microsoft Corporation
    Inventors: Venkat Pradeep Chilakamarri, Nicholas Caldwell, Saliha Azzam, Yizheng Cai, Benjamin Edward Childs, Arun Chitrapu, Steven Dimmick, Michael Gamon, Bernhard SJ Kohlmeier, Shiun-Zu Kuo, Jonathan C. Ludwig, Kimberly Manis, Courtney Anne O'Keefe, Diego Perez Del Carpio, Tu Huy Phan, Kevin Powell, Jignesh Shah, Ashish Sharma, Paulus Willem ter Horst, Mukta Pramod Walvekar, Ye-Yi Wang
  • Publication number: 20110179060
    Abstract: An automatic discovery of content to add to a data store for a project is disclosed. A data item may be parsed for data features that are contextually relevant to a given project or task. Discovered interesting data may be extracted and mapped to various search mechanisms. A search may be built and applied to various data sources to discover data items based on the contextually relevant data features. Search results from various search mechanisms may be displayed in a single user interface and may be presented to a user.
    Type: Application
    Filed: June 18, 2010
    Publication date: July 21, 2011
    Applicant: Microsoft Corporation
    Inventors: Venkat Pradeep Chilakamarri, Nicholas Caldwell, Saliha Azzam, Benjamin Edward Childs, Arun Chitrapu, Steven Dimmick, Bernhard SJ Kohlmeier, Shiun-Zu Kuo, Jonathan C. Ludwig, Kimberly Manis, Courtney Anne O'Keefe, Diego Perez Del Carpio, Tu Huy Phan, Kevin Powell, Jignesh Shah, Ashish Sharma, Paulus Willem ter Horst, Mukta Pramod Walvekar