Patents by Inventor David Alan Johnson

David Alan 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: 20240415573
    Abstract: An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and/or nerve fibers in the outer layer or deep to the outer layer of the vessel, or in prostatic tissue. The system may also include a means to limit and/or adjust the depth of penetration of the ablative fluid into and beyond the tissue of the vessel wall. The catheter may also include structures which provide radial and/or lateral support to the guide tubes so that the guide tubes expand uniformly and maintain their position against the interior surface of the vessel wall as the sharpened injection needles are advanced to penetrate into the vessel wall.
    Type: Application
    Filed: July 2, 2024
    Publication date: December 19, 2024
    Inventors: David R. Fischell, Tim A. Fischell, Robert Ryan Ragland, Darrin James Kent, Andy Edward Denison, Eric Thomas Johnson, Jeff Alan Burke, Christopher Scott Hayden
  • Patent number: 12156982
    Abstract: An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and/or nerve fibers in the outer layer or deep to the outer layer of the vessel, or in prostatic tissue. The system may also include a means to limit and/or adjust the depth of penetration of the ablative fluid into and beyond the tissue of the vessel wall. The catheter may also include structures which provide radial and/or lateral support to the guide tubes so that the guide tubes expand uniformly and maintain their position against the interior surface of the vessel wall as the sharpened injection needles are advanced to penetrate into the vessel wall.
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: December 3, 2024
    Assignee: Ablative Solutions, Inc.
    Inventors: David R. Fischell, Tim A. Fischell, Robert Ryan Ragland, Darrin James Kent, Andy Edward Denison, Eric Thomas Johnson, Jeff Alan Burke, Christopher Scott Hayden, Robert E. Fischell
  • Publication number: 20240392378
    Abstract: Methods and compositions for treating cancer such as melanomas are disclosed.
    Type: Application
    Filed: June 22, 2023
    Publication date: November 28, 2024
    Applicants: Foundation Medicine, Inc., Vanderbilt University
    Inventors: Garrett Michael FRAMPTON, Roman YELENSKY, James Xin SUN, Douglas Buckner JOHNSON, Christine Marie LOVLY, Jeffrey Alan SOSMAN, David FABRIZIO, Philip James STEPHENS, Vincent A. MILLER
  • Publication number: 20240307112
    Abstract: An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and/or nerve fibers in the outer layer or deep to the outer layer of the vessel, or in prostatic tissue. The system may also include a means to limit and/or adjust the depth of penetration of the ablative fluid into and beyond the tissue of the vessel wall. The catheter may also include structures which provide radial and/or lateral support to the guide tubes so that the guide tubes expand uniformly and maintain their position against the interior surface of the vessel wall as the sharpened injection needles are advanced to penetrate into the vessel wall.
    Type: Application
    Filed: March 1, 2024
    Publication date: September 19, 2024
    Inventors: David R. Fischell, Tim A. Fischell, Robert Ryan Ragland, Darrin James Kent, Andy Edward Denison, Eric Thomas Johnson, Jeff Alan Burke, Christopher Scott Hayden
  • Publication number: 20240299075
    Abstract: An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand with open ends around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and/or nerve fibers in the outer layer or deep to the outer layer of the vessel, or in prostatic tissue. The system also includes means to limit and/or adjust the depth of penetration of the ablative fluid into and beyond the tissue of the vessel wall. The preferred embodiment of the catheter includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened injection needles are advanced to penetrate into the vessel wall.
    Type: Application
    Filed: March 25, 2024
    Publication date: September 12, 2024
    Inventors: David R. Fischell, Tim A. Fischell, Robert Ryan Ragland, Darrin James Kent, Andy Edward Denison, Eric Thomas Johnson, Jeff Alan Burke, Christopher Scott Hayden
  • Publication number: 20240293607
    Abstract: A negative pressure device having a negative pressure source, a canister in fluid communication with the negative pressure source, a conduit the can couple with a wound dressing to provide negative pressure to a space beneath the wound dressing. Some arrangements of the negative pressure source can have a first noise reduction chamber and a second noise reduction chamber downstream of and in fluid communication with an outlet of a pump. The first and second noise reduction chambers can be configured to reduce noise generated by the pump and/or a level of pressure pulses in the fluid that is advanced through the negative pressure source.
    Type: Application
    Filed: March 23, 2022
    Publication date: September 5, 2024
    Inventors: Ben Alan Askem, William Davies, David Michael Elder, James Cunningham Glencross, Danielle Susan Johnson, Camilo Patrick Madriz, Andrea Maggiore, James Donald McLusky, Christopher John Webb, Hannah Bailey Weedon
  • Patent number: 12053238
    Abstract: An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and/or nerve fibers in the outer layer or deep to the outer layer of the vessel, or in prostatic tissue. The system may also include a means to limit and/or adjust the depth of penetration of the ablative fluid into and beyond the tissue of the vessel wall. The catheter may also include structures which provide radial and/or lateral support to the guide tubes so that the guide tubes expand uniformly and maintain their position against the interior surface of the vessel wall as the sharpened injection needles are advanced to penetrate into the vessel wall.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: August 6, 2024
    Assignee: Ablative Solutions, Inc.
    Inventors: David R. Fischell, Tim A. Fischell, Robert Ryan Ragland, Darrin James Kent, Andy Edward Denison, Eric Thomas Johnson, Jeff Alan Burke, Christopher Scott Hayden
  • Patent number: 11799972
    Abstract: Systems, methods, and computer-readable media for offloading session management processing into a forwarding plane. In some examples, a subscriber is coupled to a network endpoint through a session manager during a network session of the subscriber in a network environment. A session manager offloading system of the session manager can be maintained in a vector packet processing system in a forwarding plane of the network environment. The session manager offloading system can be configured to offload processing from the session manager into the forwarding plane. Further, at least a portion of subscriber traffic in a stream between the subscriber and the network endpoint through the session manager can be intercepted. Subsequently, the at least the portion of the subscribed traffic that is intercepted can be processed at the session manager offloading system as part of offloading the processing from the session manager into the forwarding plane.
    Type: Grant
    Filed: September 27, 2022
    Date of Patent: October 24, 2023
    Assignee: Cisco Technology, Inc.
    Inventors: Gary Kenneth Boon, King Tung Ma, Vijayabhaskar Katamreddy, David Alan Johnson, David John Poirier
  • Publication number: 20230013640
    Abstract: Systems, methods, and computer-readable media for offloading session management processing into a forwarding plane. In some examples, a subscriber is coupled to a network endpoint through a session manager during a network session of the subscriber in a network environment. A session manager offloading system of the session manager can be maintained in a vector packet processing system in a forwarding plane of the network environment. The session manager offloading system can be configured to offload processing from the session manager into the forwarding plane. Further, at least a portion of subscriber traffic in a stream between the subscriber and the network endpoint through the session manager can be intercepted. Subsequently, the at least the portion of the subscribed traffic that is intercepted can be processed at the session manager offloading system as part of offloading the processing from the session manager into the forwarding plane.
    Type: Application
    Filed: September 27, 2022
    Publication date: January 19, 2023
    Inventors: Gary Kenneth Boon, King Tung Ma, Vijayabhaskar Katamreddy, David Alan Johnson, David John Poirier
  • Patent number: 11483398
    Abstract: Systems, methods, and computer-readable media for offloading session management processing into a forwarding plane. In some examples, a subscriber is coupled to a network endpoint through a session manager during a network session of the subscriber in a network environment. A session manager offloading system of the session manager can be maintained in a vector packet processing system in a forwarding plane of the network environment. The session manager offloading system can be configured to offload processing from the session manager into the forwarding plane. Further, at least a portion of subscriber traffic in a stream between the subscriber and the network endpoint through the session manager can be intercepted. Subsequently, the at least the portion of the subscribed traffic that is intercepted can be processed at the session manager offloading system as part of offloading the processing from the session manager into the forwarding plane.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: October 25, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Gary Kenneth Boon, King Tung Ma, Vijayabhaskar Katamreddy, David Alan Johnson, David John Poirier
  • Publication number: 20210092191
    Abstract: Systems, methods, and computer-readable media for offloading session management processing into a forwarding plane. In some examples, a subscriber is coupled to a network endpoint through a session manager during a network session of the subscriber in a network environment. A session manager offloading system of the session manager can be maintained in a vector packet processing system in a forwarding plane of the network environment. The session manager offloading system can be configured to offload processing from the session manager into the forwarding plane. Further, at least a portion of subscriber traffic in a stream between the subscriber and the network endpoint through the session manager can be intercepted. Subsequently, the at least the portion of the subscribed traffic that is intercepted can be processed at the session manager offloading system as part of offloading the processing from the session manager into the forwarding plane.
    Type: Application
    Filed: December 2, 2020
    Publication date: March 25, 2021
    Inventors: Gary Kenneth Boon, King Tung Ma, Vijayabhaskar Katamreddy, David Alan Johnson, David John Poirier
  • Patent number: 10873636
    Abstract: Systems, methods, and computer-readable media for offloading session management processing into a forwarding plane. In some examples, a subscriber is coupled to a network endpoint through a session manager during a network session of the subscriber in a network environment. A session manager offloading system of the session manager can be maintained in a vector packet processing system in a forwarding plane of the network environment. The session manager offloading system can be configured to offload processing from the session manager into the forwarding plane. Further, at least a portion of subscriber traffic in a stream between the subscriber and the network endpoint through the session manager can be intercepted. Subsequently, the at least the portion of the subscribed traffic that is intercepted can be processed at the session manager offloading system as part of offloading the processing from the session manager into the forwarding plane.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: December 22, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Gary Kenneth Boon, King Tung Ma, Vijayabhaskar Katamreddy, David Alan Johnson, David John Poirier
  • Publication number: 20200014763
    Abstract: Systems, methods, and computer-readable media for offloading session management processing into a forwarding plane. In some examples, a subscriber is coupled to a network endpoint through a session manager during a network session of the subscriber in a network environment. A session manager offloading system of the session manager can be maintained in a vector packet processing system in a forwarding plane of the network environment. The session manager offloading system can be configured to offload processing from the session manager into the forwarding plane. Further, at least a portion of subscriber traffic in a stream between the subscriber and the network endpoint through the session manager can be intercepted. Subsequently, the at least the portion of the subscribed traffic that is intercepted can be processed at the session manager offloading system as part of offloading the processing from the session manager into the forwarding plane.
    Type: Application
    Filed: July 9, 2018
    Publication date: January 9, 2020
    Inventors: Gary Kenneth Boon, King Tung Ma, Vijayabhaskar Katamreddy, David Alan Johnson, David John Poirier
  • Patent number: 10069904
    Abstract: An example method for load-balanced IP pool distribution among a plurality of forwarding elements is provided. The method may include assigning a plurality of IP pool chunks to the plurality of forwarding elements, each IP pool chunk comprising a plurality of IP addresses, and receiving, from each of the forwarding elements, information indicative of a load on each forwarding element. The method may further include performing load balancing using the information indicative of the load on each forwarding element to determine whether re-assignment of the plurality of IP pool chunks is needed, and re-assigning at least one IP pool chunk of the plurality of IP pool chunks from a first forwarding element to a second forwarding element based on the load balancing.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: September 4, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Akshya Kumar Singh, David Alan Johnson
  • Publication number: 20170118275
    Abstract: An example method for load-balanced IP pool distribution among a plurality of forwarding elements is provided. The method may include assigning a plurality of IP pool chunks to the plurality of forwarding elements, each IP pool chunk comprising a plurality of IP addresses, and receiving, from each of the forwarding elements, information indicative of a load on each forwarding element. The method may further include performing load balancing using the information indicative of the load on each forwarding element to determine whether re-assignment of the plurality of IP pool chunks is needed, and re-assigning at least one IP pool chunk of the plurality of IP pool chunks from a first forwarding element to a second forwarding element based on the load balancing.
    Type: Application
    Filed: October 26, 2015
    Publication date: April 27, 2017
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Akshya Kumar Singh, David Alan Johnson
  • Patent number: 9584406
    Abstract: A method for selecting a data path includes identifying a plurality of available data paths between a router device and a wide area network. Path selection data is obtained. The path selection rules are processed with the obtained path selection data. For each of a plurality of data communications to be routed, one of the plurality of available data paths is selected according to the processing of the path selection rules. Each of the plurality of data communications is routed between a local area network and the wide area network via a data exchanger and a remote link that follows the data path selected for that data communication.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: February 28, 2017
    Assignee: CRADLEPOINT, INC.
    Inventors: Patrick Sewall, David Alan Johnson, Steven Wood
  • Patent number: 9356835
    Abstract: A method for configuring a router is disclosed. The method comprises providing router configuration information. The router configuration information is sent to the router over a cellular data network.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: May 31, 2016
    Assignee: CRADLEPOINT, INC.
    Inventors: Phillip T. Magnuson, Gordon McNutt, Jeff Buttars, David Alan Johnson
  • Patent number: 9294353
    Abstract: A method for configuring a wireless router includes electronically reading information that is unique to the wireless router. A code is automatically generated from the information. The generated code is automatically set as one or more of a network name and a device password for the wireless router.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: March 22, 2016
    Assignee: CRADLEPOINT, INC.
    Inventors: Patrick Sewall, David Alan Johnson
  • Patent number: 9276940
    Abstract: A method, implemented by a router device, for guiding a user in establishing access privileges for a data exchanger includes causing the data exchanger to establish a remote link with a data service provider. Access content is obtained from the data service provider and presented to a client device. Access data provided in response to the presenting of the access content is received. The access content when presented by the client device enables a user to supply the access data. The access data is useable by the data service provider to set access privileges associated with the data exchanger that enable the data exchanger to be utilized to perform a desired function. The access data is returned to the data service provider via the remote link. The data exchanger is utilized to implement the desired function.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: March 1, 2016
    Assignee: CradlePoint, Inc.
    Inventors: Steven Wood, Patrick Sewall, David Alan Johnson
  • Patent number: 9270571
    Abstract: A router system is disclosed. The router system comprises a wireless router and a cradle comprising a router interface configured to receive the router. One or more connections are positioned at the router interface for communicating with the router. Methods and systems for communicating between a router and the internet are also disclosed.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: February 23, 2016
    Assignee: CRADLEPOINT, INC.
    Inventors: Phillip T. Magnuson, David Alan Johnson