Patents by Inventor Thomas R. Johnson

Thomas R. Johnson 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).

  • Publication number: 20240069742
    Abstract: One aspect of the application can provide a system and method for replacing a failing node with a spare node in a non-uniform memory access (NUMA) system. During operation, in response to determining that a node-migration condition is met, the system can initialize a node controller of the spare node such that accesses to a memory local to the spare node are to be processed by the node controller, quiesce the failing node and the spare node to allow state information of processors on the failing node to be migrated to processors on the spare node, and subsequent to unquiescing the failing node and the spare node, migrate data from the failing node to the spare node while maintaining cache coherence in the NUMA system and while the NUMA system remains in operation, thereby facilitating continuous execution of processes previously executed on the failing node.
    Type: Application
    Filed: August 29, 2022
    Publication date: February 29, 2024
    Inventors: Thomas Edward McGee, Brian J. Johnson, Frank R. Dropps, Derek S. Schumacher, Stuart C. Haden, Michael S. Woodacre
  • Patent number: 11446481
    Abstract: A method of controlling an implantable blood pump including a housing having a proximal portion including an inlet, a distal portion including an outlet, and an impeller therein, the method including detecting when a pressure in the housing exceeds a pressure threshold and executing a first vector control command to displace the impeller axially in a distal direction from a primary position to a secondary position different than the primary position in response to the pressure exceeding the pressure threshold.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: September 20, 2022
    Assignee: HEARTWARE, INC.
    Inventors: Justin Wolman, Fernando Casas, Carlos Reyes, Thomas R. Johnson
  • Patent number: 11311711
    Abstract: A method of controlling a blood pump including executing a control command to temporarily displace an impeller of the blood pump within a pump housing from a first axial position relative to the pump housing to a second axial position a distance away from the first axial position using a vector control method, and causing the impeller to move from the second axial position to a third axial position, the third axial position including a positive and a negative displacement of the impeller relative to the first axial position.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: April 26, 2022
    Assignee: HeartWare, Inc.
    Inventors: Fernando Casas, Carlos Reyes, Justin Wolman, Thomas R. Johnson
  • Publication number: 20210361930
    Abstract: A remote controller updating system for an implantable blood pump including an implantable blood pump, an implantable controller coupled to the implantable blood pump, and a pump driveline including a data network connection in communication with the implantable controller. The system may also include a pump connector coupled to the pump driveline, a remote controller couplable to the implantable blood pump, and a system update assembly including a system update connector couplable to the pump connector and a power source coupled to the system update connector.
    Type: Application
    Filed: August 4, 2021
    Publication date: November 25, 2021
    Inventor: Thomas R. Johnson
  • Patent number: 11110265
    Abstract: A remote controller updating system for an implantable blood pump including an implantable blood pump, an implantable controller coupled to the implantable blood pump, and a pump driveline including a data network connection in communication with the implantable controller. The system may also include a pump connector coupled to the pump driveline, a remote controller couplable to the implantable blood pump, and a system update assembly including a system update connector couplable to the pump connector and a power source coupled to the system update connector.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: September 7, 2021
    Assignee: HeartWare, Inc.
    Inventor: Thomas R. Johnson
  • Publication number: 20190343999
    Abstract: A method of controlling an implantable blood pump including a housing having a proximal portion including an inlet, a distal portion including an outlet, and an impeller therein, the method including detecting when a pressure in the housing exceeds a pressure threshold and executing a first vector control command to displace the impeller axially in a distal direction from a primary position to a secondary position different than the primary position in response to the pressure exceeding the pressure threshold.
    Type: Application
    Filed: May 7, 2019
    Publication date: November 14, 2019
    Inventors: Justin WOLMAN, Fernando CASAS, Carlos REYES, Thomas R. JOHNSON
  • Publication number: 20190231952
    Abstract: A method of controlling a blood pump including executing a control command to temporarily displace an impeller of the blood pump within a pump housing from a first axial position relative to the pump housing to a second axial position a distance away from the first axial position using a vector control method, and causing the impeller to move from the second axial position to a third axial position, the third axial position including a positive and a negative displacement of the impeller relative to the first axial position.
    Type: Application
    Filed: January 29, 2019
    Publication date: August 1, 2019
    Inventors: Fernando CASAS, Carlos REYES, Justin WOLMAN, Thomas R. JOHNSON
  • Patent number: 10348146
    Abstract: A permanent magnet motor, generator or the like that is liquid cooled using glycol or similar fluid with the cooling applied directly in the winding slots of the stator and in self contained loops such that no adverse loops are formed.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: July 9, 2019
    Assignee: LCDRIVES CORP.
    Inventors: Russel Hugh Marvin, Thomas R. Johnson
  • Patent number: 10312760
    Abstract: A permanent magnet motor, generator or the like that is liquid cooled using glycol or similar fluid with the means defining cooling passageways disposed directly in the winding slots of the stator between and in engagement with the windings and stator laminations.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: June 4, 2019
    Assignee: LCDRIVES CORP.
    Inventors: Russel Hugh Marvin, Thomas R. Johnson
  • Publication number: 20190134286
    Abstract: A remote controller updating system for an implantable blood pump including an implantable blood pump, an implantable controller coupled to the implantable blood pump, and a pump driveline including a data network connection in communication with the implantable controller. The system may also include a pump connector coupled to the pump driveline, a remote controller couplable to the implantable blood pump, and a system update assembly including a system update connector couplable to the pump connector and a power source coupled to the system update connector.
    Type: Application
    Filed: November 3, 2017
    Publication date: May 9, 2019
    Inventor: Thomas R. JOHNSON
  • Patent number: 9868238
    Abstract: A moldable material shaping system for shaping a moldable material, the system comprising a thermal transfer mold having an internal cavity configured to receive a moldable material, the internal cavity further comprising an internal mold shape, a thermally controlled heat source subsystem configured to heat the thermal transfer mold and the moldable material received in the thermal transfer mold thereby reshaping the moldable material to a deformed moldable material shape conforming to the internal mold shape. Some embodiments further comprise a cooling source subsystem configured to cool the thermal transfer mold and stabilize the moldable material inside the thermal transfer mold to maintain the deformed moldable material shape. Methods of molding a moldable material are also disclosed.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: January 16, 2018
    Assignee: CATHETER DYNAMICS, INC.
    Inventors: Paul M. Scopton, Yem Chin, Thomas R. Johnson
  • Patent number: 9386966
    Abstract: A tissue removal apparatus and needle assembly for extracting a tissue portion from tissue or the like, the needle assembly comprising an inner tube having an interior cavity, an outer cannula having a proximal end, a distal end and an interior cavity, the interior cavity of the outer cannula having an interior diameter to slidably receive the inner tube and a collapsible section operably engaged with the inner tube and the outer cannula whereby a forward movement of a portion of the inner tube within the interior cavity of the outer cannula changes the collapsible section from a neutral position to a collapsed position to engage the tissue portion. A method of tissue removal comprising the steps of positioning a needle assembly in a tissue, engaging a tissue portion and withdrawing the needle assembly to remove the tissue portion from the tissue.
    Type: Grant
    Filed: June 3, 2012
    Date of Patent: July 12, 2016
    Assignee: Theragenics Corporation
    Inventors: Hugh Tripp, Thomas R. Johnson
  • Publication number: 20160136398
    Abstract: Methods for treating hydrocephalus using a shunt, the shunt having one or more CSF intake openings in a distal portion, a valve disposed in a proximal portion of the shunt, and a lumen extending between the one or more CSF intake openings and the valve, the method comprises deploying the shunt in a body of a patient so that the distal portion of the shunt is at least partially disposed within a CP angle cistern, a body of the shunt is at least partially disposed within an IPS of the patient, and the proximal portion of the shunt is at least partially disposed within or proximate to a JV of the patient, wherein, after deployment of the shunt, CSF flows from the CP angle cistern to the JV via the shunt lumen at a flow rate in a range of 5 ml per hour to 15 ml per hour.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 19, 2016
    Inventors: Carl Heilman, Adel M. Malek, Ayan A. Bhandari, Jeffrey C. Cerier, Amos G. Cruz, Joseph Gordon, Thomas R. Johnson, Gregory T. Martin, Jonathan B. O'Keefe, David A. Rezac, Timothy W. Robinson, Shane Siwinski, Joseph Ting, Jennet Toyjanova, Andrew Ziegler
  • Publication number: 20140125167
    Abstract: A permanent magnet motor, generator or the like that is constructed with a concentrated winding and edge form wound stator coils. This achieves less eddy current losses in the windings as well as a much higher power density than conventional techniques.
    Type: Application
    Filed: November 6, 2012
    Publication date: May 8, 2014
    Applicant: LCDrives Corp.
    Inventors: Russel Hugh Marvin, Thomas R. Johnson
  • Publication number: 20140125188
    Abstract: A permanent magnet motor, generator or the like that is constructed with a concentrated winding using a separate tooth. This tooth is preloaded in such a way to achieve high structural rigidity and good magnetic performance.
    Type: Application
    Filed: November 6, 2012
    Publication date: May 8, 2014
    Applicant: LC Drives Corp.
    Inventors: Russel Hugh Marvin, Thomas R. Johnson
  • Publication number: 20140100479
    Abstract: A tissue removal apparatus and needle assembly for extracting a tissue portion from tissue or the like, the needle assembly comprising an inner tube having an interior cavity, an outer cannula having a proximal end, a distal end and an interior cavity, the interior cavity of the outer cannula having an interior diameter to slidably receive the inner tube and a collapsible section operably engaged with the inner tube and the outer cannula whereby a forward movement of a portion of the inner tube within the interior cavity of the outer cannula changes the collapsible section from a neutral position to a collapsed position to engage the tissue portion. A method of tissue removal comprising the steps of positioning a needle assembly in a tissue, engaging a tissue portion and withdrawing the needle assembly to remove the tissue portion from the tissue.
    Type: Application
    Filed: June 3, 2012
    Publication date: April 10, 2014
    Applicant: Theragenics Corporation
    Inventors: Hugh Tripp, Thomas R. Johnson
  • Publication number: 20140015353
    Abstract: A permanent magnet motor, generator or the like that is constructed with a layer form wound winding for easy manufacturing of robust machines
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Applicant: LCDRIVES CORP.
    Inventors: Russel Hugh Marvin, Thomas R. Johnson
  • Publication number: 20140015352
    Abstract: A permanent magnet motor, generator or the like that is constructed such that each coil is manufactured as two individual coils.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Applicant: LCDRIVES CORP.
    Inventors: Russel Hugh Marvin, Thomas R. Johnson
  • Publication number: 20140015351
    Abstract: A permanent magnet motor, generator or the like that is liquid cooled using glycol or similar fluid with the cooling applied directly in the winding slots of the stator and in self contained loops such that no adverse loops are formed.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Applicant: LCDRIVES CORP.
    Inventors: Russel Hugh Marvin, Thomas R. Johnson
  • Publication number: 20140015347
    Abstract: A permanent magnet motor, generator or the like that is liquid cooled using glycol or similar fluid with the means defining cooling passageways disposed directly in the winding slots of the stator between and in engagement with the windings and stator laminations.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Applicant: LCDrives Corp.
    Inventors: Russel Hugh Marvin, Thomas R. Johnson