Patents by Inventor Charles Perkins

Charles Perkins 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: 20190239766
    Abstract: An electrophysiology catheter with a distal electrode assembly having covered spine carrying a plurality of microelectrodes. The spines have nonconductive covers that are reinforced with tensile members, e.g., wires or fibers, that extend (or have portions that extend) longitudinally so as to minimize any elongation of the covers and the microelectrodes carried thereon. The tensile members may also have a length greater than the length of the spines so the proximal portions extend proximally from the spines, through the catheter and at least into the control handle for actuation by an operator for deflecting and moving the spines, like “fingers.
    Type: Application
    Filed: February 6, 2018
    Publication date: August 8, 2019
    Inventors: Cesar Fuentes-Ortega, Mario A. Solis, Marisa Borja, Charles Perkins, Shubhayu Basu, Stuart Williams, Veronica Gonzalez, Jeburun Shukee
  • Patent number: 9906439
    Abstract: System and method of ad hoc on-demand routing by virtue of central control. A central controller of a network can communicate directly with a route-requesting network device regarding discovery of a data transmission path and perform route computation. A source network device may query the central controller with a unicast route request. In response, the central controller can identify a feasible route based on the topology information of the network. The central controller may also receive a broadcast route request along with other network nodes. As a result, the source device can be offered to select from two resultant routes, one provided by the central controller in a centralized manner and the other provided by the destination device. Further, the central controller can be used specifically for computation of constrained routes by incorporating global constraints. The central controller may be a software defined network (SDN) controller.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: February 27, 2018
    Assignee: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Sam K. Aldrin, Charles Perkins
  • Patent number: 9770256
    Abstract: A medical device for safely and effectively removing a clip or a suture from a heart valve is operable in association with a guidewire for positioning the device in proximity to the heart valve. The apparatus may include a blade for cutting a tissue bridge including the clip and an arrangement for removing the tissue bridge from the heart valve. The apparatus may include two arms that secure the clip. The blade may be deployed to core out a central portion of a tissue bridge, including the clip or the suture, from the heart valve. The blade may be activated by an actuator. A retrieval member may be configured to capture the tissue bridge and the clip or suture after excision by the blade.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: September 26, 2017
    Assignee: MITRACORE TECHNOLOGIES INC.
    Inventors: Gideon Cohen, Etienne Lagace, Marwane Berrada, Charles Perkins, Boby Chu
  • Publication number: 20150124625
    Abstract: System and method of ad hoc on-demand routing by virtue of central control. A central controller of a network can communicate directly with a route-requesting network device regarding discovery of a data transmission path and perform route computation. A source network device may query the central controller with a unicast route request. In response, the central controller can identify a feasible route based on the topology information of the network. The central controller may also receive a broadcast route request as long with other network nodes. As a result, the source device can be offered to select from two resultant routes, one provided by the central controller in a centralized manner and the other provided by the destination device. Further, the central controller can be used specifically for computation of constrained routes by incorporating global constraints. The central controller may be a software defined network (SDN) controller.
    Type: Application
    Filed: November 1, 2013
    Publication date: May 7, 2015
    Applicant: Futurewei Technologies, Inc.
    Inventors: Sam K. ALDRIN, Charles PERKINS
  • Publication number: 20140228871
    Abstract: A medical device for safely and effectively removing a clip or a suture from a heart valve is operable in association with a guidewire for positioning the device in proximity to the heart valve. The apparatus may include a blade for cutting a tissue bridge including the clip and an arrangement for removing the tissue bridge from the heart valve. The apparatus may include two arms that secure the clip. The blade may be deployed to core out a central portion of a tissue bridge, including the clip or the suture, from the heart valve. The blade may be activated by an actuator. A retrieval member may be configured to capture the tissue bridge and the clip or suture after excision by the blade.
    Type: Application
    Filed: September 28, 2012
    Publication date: August 14, 2014
    Applicant: Mitracore Technologies Inc.
    Inventors: Gideon Cohen, Etienne Lagace, Marwane Berrada, Charles Perkins, Boby Chu
  • Patent number: 8443945
    Abstract: Vehicle chocking systems include a first chock comprising a first bottom surface, a first front wheel restraining surface and a first rear wheel restraining surface opposite the first front wheel restraining surface, a second chock comprising a second bottom surface, a second front wheel restraining surface and a second rear wheel restraining surface, wherein the first bottom surface, the first front wheel restraining surface and the first rear wheel restraining surface of the first chock and the second bottom surface, the second front wheel restraining surface and the second rear wheel restraining surface of the second chock each comprises a proximity sensor, wherein the proximity sensors are communicatively coupled to a controller comprising a processor and a memory having a computer readable and executable instruction set to determine if the proximity sensors for each of the first bottom surface, the second bottom surface and opposing wheel restraining surfaces are engaged.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: May 21, 2013
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Blair Charles Perkins
  • Publication number: 20110290006
    Abstract: Methods and apparatus are provided for performing accurate, repeatable leak test measurements in wet, dusty and/or fluid-filled systems, such as a power plant, with no special sampling pumps, carrier gases or separators required. A leak detector probe is installed directly in a pipe or other component carrying a gas flow to be tested and is coupled to the inlet of a leak detector. The leak detector probe includes a test gas permeable membrane, which is positioned in the gas flow to be tested. The test gas permeable membrane may, for example, be positioned in a central region of a pipe in the flow of gas toward the evacuation pump. In some embodiments, the position of the leak detector probe in the pipe or other component may be adjustable.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 1, 2011
    Inventors: Charles Perkins, Pieter Palenstyn
  • Publication number: 20110290596
    Abstract: Vehicle chocking systems include a first chock comprising a first bottom surface, a first front wheel restraining surface and a first rear wheel restraining surface opposite the first front wheel restraining surface, a second chock comprising a second bottom surface, a second front wheel restraining surface and a second rear wheel restraining surface, wherein the first bottom surface, the first front wheel restraining surface and the first rear wheel restraining surface of the first chock and the second bottom surface, the second front wheel restraining surface and the second rear wheel restraining surface of the second chock each comprises a proximity sensor, wherein the proximity sensors are communicatively coupled to a controller comprising a processor and a memory having a computer readable and executable instruction set to determine if the proximity sensors for each of the first bottom surface, the second bottom surface and opposing wheel restraining surfaces are engaged.
    Type: Application
    Filed: May 25, 2010
    Publication date: December 1, 2011
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Blair Charles Perkins
  • Patent number: 7694334
    Abstract: A digital “baton” is provided from a firewall or other gateway, or other network device, to a device B outside the firewall, when a device A, which is inside the firewall, requests information from the device B. The device B may pass the digital baton to subsequent electronic devices that may respond to the request using the digital baton to send messages or information through the firewall to the device A. The firewall authenticates and filters the messages based on authentication of the batons contained within the messages.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: April 6, 2010
    Assignee: Nokia Corporation
    Inventors: Michael G. Williams, Jon Graff, Charles Perkins
  • Publication number: 20090316660
    Abstract: A method, system, and apparatus for enabling handover of a Mobile Station (MS) amongst a plurality of communication networks is provided. The MS operates in one or more communication networks of the plurality of communication networks using an Internet Protocol (IP) session. The method includes communicating one or more network parameters amongst the plurality of communication networks. The method further includes creating one or more datapath parameters based on one or more of the one or more network parameters. The method further includes altering one or more protocol stack parameters in the MS. Altering the one or more protocol stack parameters maintains the IP session operating the MS in the one or more communication networks.
    Type: Application
    Filed: March 3, 2009
    Publication date: December 24, 2009
    Inventors: Charles Perkins, Mustafa Ergen
  • Patent number: 7500381
    Abstract: Trace gas leak detectors and methods for trace gas leak detection of large leaks at relatively high test pressures are provided. A trace gas leak detector includes a test port to receive a sample containing a trace gas, the test port connected to a test line, a mass spectrometer to detect the trace gas, a high vacuum pump having an inlet port coupled to the inlet of the mass spectrometer, and a forepump having a main inlet, at least one intermediate inlet and an exhaust. The main inlet of the forepump is coupled to the exhaust port of the high vacuum pump. The intermediate inlet is controllably connected to the test line. The forepump is selected from the group consisting of a scroll vacuum pump and a screw vacuum pump.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: March 10, 2009
    Assignee: Varian, Inc.
    Inventors: Pieter Palenstyn, Charles Perkins
  • Publication number: 20080089257
    Abstract: A method and system for supporting mobile routers in Internet Protocol version 6 (IPv6) is provided. A mobile router obtains a care-of-address associated with an address configuration. The mobile router registers the care-of-address with a home agent. A bi-directional tunnel is established between the mobile router and the home agent. Packets are then forwarded via the bi-directional tunnel.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 17, 2008
    Inventors: Outi Markki, Timothy Kniveton, Jari Malinen, Vijay Devarapalli, Charles Perkins
  • Publication number: 20080089315
    Abstract: The invention provides, according to one embodiment, a system and method for determining an optimum route time-out value. The method may include determining a route from a source node to a destination node, and forwarding a route request from the source node to an intermediate node. The method further includes dynamically computing, at the intermediate node, a number of hops that the route has traversed since the source node. The adaptive route time-out value (ART) for a route to the destination node is then set to be a value that is a function of the number of hops, f(N).
    Type: Application
    Filed: October 16, 2006
    Publication date: April 17, 2008
    Inventors: Cedric Westphal, Charles Perkins
  • Publication number: 20080053199
    Abstract: Trace gas leak detectors and methods for trace gas leak detection of large leaks at relatively high test pressures are provided. A trace gas leak detector includes a test port to receive a sample containing a trace gas, the test port connected to a test line, a mass spectrometer to detect the trace gas, a high vacuum pump having an inlet port coupled to the inlet of the mass spectrometer, and a forepump having a main inlet, at least one intermediate inlet and an exhaust. The main inlet of the forepump is coupled to the exhaust port of the high vacuum pump. The intermediate inlet is controllably connected to the test line. The forepump is selected from the group consisting of a scroll vacuum pump and a screw vacuum pump.
    Type: Application
    Filed: August 31, 2006
    Publication date: March 6, 2008
    Inventors: Pieter Palenstyn, Charles Perkins
  • Patent number: 7320243
    Abstract: Methods and apparatus are provided for detection of large leaks in scaled articles. Apparatus for leak detection includes a first sealable chamber configured to receive a test piece containing a trace gas, a second sealable chamber, a first valve coupled between the first and second chambers, a leak detector having a test port, a trace gas permeable member coupled between the second chamber and the test port of the leak detector, a vacuum pump having an inlet, and a second valve coupled between the second chamber and the inlet of the vacuum pump. The permeable member may be quartz, which is permeable to helium when heated. The leak detector may be an ion pump or a helium mass spectrometer leak detector.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: January 22, 2008
    Assignee: Varian, Inc.
    Inventors: Charles Perkins, Pieter N. Palenstijn
  • Patent number: 7290439
    Abstract: Methods and apparatus are provided for leak detection by the accumulation method. The apparatus includes a sealable chamber (10) configured to receive a test piece (12) that, while in the chamber, contains a trace gas, a trace gas permeable member (30) in gas communication with the chamber, and a trace gas sensor (20) in gas communication with the permeable member and configured to sense the trace gas that passed from the chamber through the permeable member. The permeable member may be quartz. The trace gas sensor may include an ion pump.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: November 6, 2007
    Assignee: Varian, Inc.
    Inventors: Charles Perkins, Pieter N. Palenstijn
  • Publication number: 20070187592
    Abstract: A mass spectrometer includes a main magnet having spaced-apart polepieces which define a gap, the main magnet producing a magnetic field in the gap, an ion source to generate ions and to accelerate the ions into the magnetic field in the gap, the ion source located outside the gap, and an ion detector to detect a selected species of the ions generated by the ion source and deflected by the magnetic field. The ion detector is located in the gap at a natural focus point of the selected species of ions. The mass spectrometer may be used in a trace gas leak detector.
    Type: Application
    Filed: February 15, 2006
    Publication date: August 16, 2007
    Inventors: J. Geist, Jeffrey Diep, Peter Williams, Charles Perkins
  • Publication number: 20070187586
    Abstract: Mass spectrometers for trace gas leak detection and methods for operating mass spectrometers are provided. The mass spectrometer includes an ion source to ionize trace gases, such as helium, a magnet to deflect the ions and a detector to detect the deflected ions. The ion source includes an electron source, such a filament. The method includes operating the electron source at an electron accelerating potential relative to an ionization chamber sufficient to ionize the trace gas but insufficient to form undesired ions, such as triply charged carbon.
    Type: Application
    Filed: February 15, 2006
    Publication date: August 16, 2007
    Inventors: J. Geist, Jeffrey Diep, Peter Williams, Charles Perkins
  • Publication number: 20070121866
    Abstract: A communication system is disclosed including at least a communication network, one caller party equipped with a communication device by using of which the caller party may originate a communication, one called party equipped with communication means by using of which the called party may response to the communication originated by the caller party and one or more network elements arranged in communication network for arranging the communication between the caller and called parties and which of network elements at least part are arranged to be operated as VoIP system elements in order to arrange VoIP-based communication. In communication system is arranged to be implemented as features a protocol enabling an availability of a presence information of at least the communication means of the called party and an universal designation feature in order to form a destination address for the communication from the caller party to the called party.
    Type: Application
    Filed: November 28, 2005
    Publication date: May 31, 2007
    Inventors: Timothy Kniveton, Charles Perkins
  • Patent number: 7204127
    Abstract: Methods and apparatus for large leak testing are provided. The apparatus includes a test line to receive a sample containing a trace gas, a mass spectrometer to detect the trace gas and having an inlet for receiving the trace gas, a first vacuum pump characterized by a relatively high reverse flow rate for light gases and a relatively low reverse flow rate for heavy gases, the first vacuum pump having a pump inlet and a foreline, the pump inlet being coupled to the inlet of the mass spectrometer, and a second vacuum pump configured to back the first vacuum pump. The apparatus further includes a trace gas permeable member coupled between the test line and the pump inlet, the foreline, or, in the case where the first vacuum pump is a turbomolecular pump, a midstage line.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: April 17, 2007
    Assignee: Varian, Inc.
    Inventors: Charles Perkins, Pieter N. Palenstijn