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: 20230384524Abstract: 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 extType: ApplicationFiled: May 25, 2023Publication date: November 30, 2023Applicant: Axenic LimitedInventor: Rob Walker
-
Publication number: 20230384623Abstract: 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 semicoType: ApplicationFiled: May 25, 2023Publication date: November 30, 2023Applicant: Axenic LimitedInventor: Rob Walker
-
Patent number: 11602736Abstract: 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: GrantFiled: March 6, 2020Date of Patent: March 14, 2023Assignee: Johnson Matthey Public Limited CompanyInventors: 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: 20200306734Abstract: 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: ApplicationFiled: March 6, 2020Publication date: October 1, 2020Inventors: 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: 8795208Abstract: 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: GrantFiled: November 3, 2004Date of Patent: August 5, 2014Assignee: Physio-Control, Inc.Inventor: Rob Walker
-
Patent number: 8343081Abstract: 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: GrantFiled: December 20, 2007Date of Patent: January 1, 2013Assignee: Physio-Control, Inc.Inventor: Rob Walker
-
Publication number: 20100040222Abstract: 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: ApplicationFiled: March 15, 2007Publication date: February 18, 2010Applicant: VERSKO LIMITEDInventors: John Anderson, Eddie Keane, Rob Walker, Paul McCready
-
Publication number: 20080097258Abstract: 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: ApplicationFiled: December 20, 2007Publication date: April 24, 2008Inventor: Rob Walker
-
Publication number: 20060094991Abstract: 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: ApplicationFiled: November 3, 2004Publication date: May 4, 2006Inventor: Rob Walker
-
Patent number: 6758286Abstract: 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: GrantFiled: February 19, 2003Date of Patent: July 6, 2004Assignee: Volvo Motor Graders LimitedInventor: Rob Walker
-
Publication number: 20040000413Abstract: 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: ApplicationFiled: February 19, 2003Publication date: January 1, 2004Applicant: VOLVO MOTOR GRADERS LIMITEDInventor: Rob Walker