Patents by Inventor Rob Walker

Rob Walker 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: 20230384524
    Abstract: An optical structure comprising a multimode interference waveguide section, the multimode interference waveguide section comprising an input face, an output face and sidewalls extending therebetween, the sidewalls extending substantially parallel to a length axis; at least one input optical waveguide abutting the input face and spaced apart from the sidewalls; at least one output optical waveguide abutting the output face and spaced apart from the sidewalls; the input face being divided into first and second input face shoulder portions arranged on opposite sides of the at least one input optical waveguide; and the output face being divided into first and second output face shoulder portions arranged on opposite sides of the at least one output optical waveguide; the optical structure further comprising at least one external reflector appendage, the at least one external reflector appendage comprising a reflector portion integrally extending from a shoulder portion and an appendage waveguide integrally ext
    Type: Application
    Filed: May 25, 2023
    Publication date: November 30, 2023
    Applicant: Axenic Limited
    Inventor: Rob Walker
  • Publication number: 20230384623
    Abstract: A travelling wave electro-optic modulator comprising a substrate; first and second parallel spaced apart electrode strips arranged on the substrate; first and second optical waveguides arranged on the substrate, the optical waveguides being positioned between the first and second electrode strips and extending parallel thereto; the first electrode strip comprising at least one portion extending proximate to the first optical waveguide; the second electrode strip comprising at least one portion extending proximate to the second optical waveguide; a semiconductive backplane layer arranged within the substrate and extending between the waveguides; and, a matched termination connected to the first and second electrode strips, the matched termination comprising (a) a serpentine electrically conductive strip arranged on the substrate and connecting the first and second electrode strips together; and, (b) a semiconductive backplane matching element, the backplane matching element comprising a plurality of semico
    Type: Application
    Filed: May 25, 2023
    Publication date: November 30, 2023
    Applicant: Axenic Limited
    Inventor: Rob Walker
  • Patent number: 11602736
    Abstract: Methods and compositions related to a selective catalytic reduction catalyst comprising iron and vanadium, wherein the vanadium is present as (1) one or more vanadium oxides, and (2) metal vanadate of the form FexMyVO4 where x=0.2 to 1 and y=1?x, and where M comprises one or more non-Fe metals when y>0.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: March 14, 2023
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Zuharia Arshad, Kaneshalingam Arulraj, Guy Chandler, Rainer Leppelt, Andrew Newman, Paul Phillips, Oliver Rowe, Christopher Smith, Nicholas Spencer, Isabel Tingay, Rob Walker, Oliver Hemming, Agnes Raj
  • Publication number: 20200306734
    Abstract: Methods and compositions related to a selective catalytic reduction catalyst comprising iron and vanadium, wherein the vanadium is present as (1) one or more vanadium oxides, and (2) metal vanadate of the form FexMyVO4 where x=0.2 to 1 and y=1?x, and where M comprises one or more non-Fe metals when y>0.
    Type: Application
    Filed: March 6, 2020
    Publication date: October 1, 2020
    Inventors: Zuharia Arshad, Kaneshalingam Arulraj, Guy Chandler, Rainer Leppelt, Andrew Newman, Paul Phillips, Oliver Rowe, Christopher Smith, Nicholas Spencer, Isabel Tingay, Rob Walker, Oliver Hemming, Agnes Raj
  • Patent number: 8795208
    Abstract: Methods to control the delivery of CPR to a patient through a mechanical CPR device are described. The method generally allows for a gradual increase in the frequency of CPR cycles. The gradual increase can be regulated by protocols programmed within the CPR device such as intermittently starting and stopping the delivery of CPR, accelerating the delivery of CPR, stepping up the CPR frequency, increasing the force of CPR, and adjusting the ratio of compression and decompression in a CPR cycle. Combinations of each of these forms may also be used to control the delivery of CPR. This manner of gradually accelerating artificial blood flow during the first minutes of mechanical CPR delivery can serve to lessen the potential for ischemia/reperfusion injury in the patient who receives mechanical CPR treatment.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: August 5, 2014
    Assignee: Physio-Control, Inc.
    Inventor: Rob Walker
  • Patent number: 8343081
    Abstract: Methods to control the delivery of CPR to a patient through a mechanical CPR device are described. The method generally allows for a gradual increase in the frequency of CPR cycles. The gradual increase can be regulated by protocols programmed within the CPR device such as intermittently starting and stopping the delivery of CPR, accelerating the delivery of CPR, stepping up the CPR frequency, increasing the force of CPR, and adjusting the ratio of compression and decompression in a CPR cycle. Combinations of each of these forms may also be used to control the delivery of CPR. This manner of gradually accelerating artificial blood flow during the first minutes of mechanical CPR delivery can serve to lessen the potential for ischemia/reperfusion injury in the patient who receives mechanical CPR treatment.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: January 1, 2013
    Assignee: Physio-Control, Inc.
    Inventor: Rob Walker
  • Publication number: 20100040222
    Abstract: A system and method for managing requests for service from customer terminals (3, 5) via a website. A request for service is received at a queue manager (9) via a communications channel and is either passed to a service manager for processing or placed in a queue depending upon whether one or more applications associated with the service manager (17) are connected to an allowable number of customer terminals such that, where the request is placed in a queue the communications channel between the customer terminal and the queue manager is held open whilst the customer terminal is held in the queue. The invention allows a more efficient throughput of users/customers on a website.
    Type: Application
    Filed: March 15, 2007
    Publication date: February 18, 2010
    Applicant: VERSKO LIMITED
    Inventors: John Anderson, Eddie Keane, Rob Walker, Paul McCready
  • Publication number: 20080097258
    Abstract: Methods to control the delivery of CPR to a patient through a mechanical CPR device are described. The method generally allows for a gradual increase in the frequency of CPR cycles. The gradual increase can be regulated by protocols programmed within the CPR device such as intermittently starting and stopping the delivery of CPR, accelerating the delivery of CPR, stepping up the CPR frequency, increasing the force of CPR, and adjusting the ratio of compression and decompression in a CPR cycle. Combinations of each of these forms may also be used to control the delivery of CPR. This manner of gradually accelerating artificial blood flow during the first minutes of mechanical CPR delivery can serve to lessen the potential for ischemia/reperfusion injury in the patient who receives mechanical CPR treatment.
    Type: Application
    Filed: December 20, 2007
    Publication date: April 24, 2008
    Inventor: Rob Walker
  • Publication number: 20060094991
    Abstract: Methods to control the delivery of CPR to a patient through a mechanical CPR device are described. The method generally allows for a gradual increase in the frequency of CPR cycles. The gradual increase can be regulated by protocols programmed within the CPR device such as intermittently starting and stopping the delivery of CPR, accelerating the delivery of CPR, stepping up the CPR frequency, increasing the force of CPR, and adjusting the ratio of compression and decompression in a CPR cycle. Combinations of each of these forms may also be used to control the delivery of CPR. This manner of gradually accelerating artificial blood flow during the first minutes of mechanical CPR delivery can serve to lessen the potential for ischemia/reperfusion injury in the patient who receives mechanical CPR treatment.
    Type: Application
    Filed: November 3, 2004
    Publication date: May 4, 2006
    Inventor: Rob Walker
  • Patent number: 6758286
    Abstract: A circle drawbar assembly uses a series of hydraulic cylinders disposed within the circle member and attached to the drawbar frame to rotate the circle member. These cylinders can also be used to lock the circle member in a desired position. The cylinders preferably are secured to the drawbar frame at a position close to but offset from the axis of rotation of the circle member. The cylinders rotate with rotation of the circle member.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: July 6, 2004
    Assignee: Volvo Motor Graders Limited
    Inventor: Rob Walker
  • Publication number: 20040000413
    Abstract: A circle drawbar assembly uses a series of hydraulic cylinders disposed within the circle member and attached to the drawbar frame to rotate the circle member. These cylinders can also be used to lock the circle member in a desired position. The cylinders preferably are secured to the drawbar frame at a position close to but offset from the axis of rotation of the circle member. The cylinders rotate with rotation of the circle member.
    Type: Application
    Filed: February 19, 2003
    Publication date: January 1, 2004
    Applicant: VOLVO MOTOR GRADERS LIMITED
    Inventor: Rob Walker