Patents by Inventor Graham Johnston
Graham Johnston 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).
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Patent number: 11941179Abstract: A system and method for displaying images of internal anatomy includes an image processing device configured to provide high resolution images of the surgical field from low resolution scans during the procedure. The image processing device digitally manipulates a previously-obtained high resolution baseline image to produce many representative images based on permutations of movement of the baseline image. During the procedure a representative image is selected having an acceptable degree of correlation to the new low resolution image. The selected representative image and the new image are merged to provide a higher resolution image of the surgical field. The image processing device is also configured to provide interactive movement of the displayed image based on movement of the imaging device, and to permit placement of annotations on the displayed image to facilitate communication between the radiology technician and the surgeon.Type: GrantFiled: December 13, 2021Date of Patent: March 26, 2024Assignee: NuVasive, Inc.Inventors: Robert E. Isaacs, Samuel Morris Johnston, David Alexander Skwerer, Randall Graham Campbell
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Patent number: 10450754Abstract: The present invention is directed roof edge seal and barrier devices and their method of manufacture. A method of manufacturing a comb-like sealing strip for use as a roof edge seal or barrier comprises stamping or cutting an elongate strip of material along a sinuous path located between the edges of the strip and then separating the strip into two portions, each of which consists of a fixing edge corresponding to the edge of the original strip from which project a series of teeth or prongs forming a comb structure.Type: GrantFiled: November 18, 2016Date of Patent: October 22, 2019Assignee: NASTYSTOP HOLDINGS PTY LTDInventors: David Malcolm Goodwin, Mark Graham Johnston
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Publication number: 20170145696Abstract: The present invention is directed roof edge seal and barrier devices and their method of manufacture. A method of manufacturing a comb-like sealing strip for use as a roof edge seal or barrier comprises stamping or cutting an elongate strip of material along a sinuous path located between the edges of the strip and then separating the strip into two portions, each of which consists of a fixing edge corresponding to the edge of the original strip from which project a series of teeth or prongs forming a comb structure.Type: ApplicationFiled: November 18, 2016Publication date: May 25, 2017Applicant: NASTYSTOP HOLDINGS PTY LTDInventors: DAVID MALCOLM GOODWIN, MARK GRAHAM JOHNSTON
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Patent number: 9065482Abstract: Approaches are disclosed for encoding N symbols of a sequence in parallel using an R parity symbol encoding algorithm. A first symbol matrix is added to a first parity matrix over a finite field to produce a first intermediate matrix. The first intermediate matrix is multiplied by at least a first coefficient matrix and a second coefficient matrix over the finite field to produce a second intermediate matrix. A second symbol matrix is multiplied by at least the second coefficient matrix to produce a third intermediate matrix. The second and third intermediate matrices are added to produce a revised parity matrix.Type: GrantFiled: March 13, 2013Date of Patent: June 23, 2015Assignee: XILINX, INC.Inventors: Graham Johnston, David I. Lawrie
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Patent number: 8862968Abstract: In one embodiment, an encoder circuit is provided. The encoder includes an input circuit having a plurality of finite field subtraction circuits, each configured to receive a respective one of the sequence of symbols and subtract the symbol from a respective symbol of an intermediate polynomial to produce a respective feedback symbol. For each coefficient of a code generation polynomial, a first circuit is configured to multiply each feedback symbol by a respective constant corresponding to the coefficient to produce a first set of intermediate results. Each first set of intermediate results is summed to produce a second intermediate result. A buffer circuit of the encoder is configured and arranged to store the second intermediate results produced by the first circuit as the intermediate polynomial.Type: GrantFiled: November 2, 2011Date of Patent: October 14, 2014Assignee: Xilinx, Inc.Inventor: Graham Johnston
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Patent number: 8429482Abstract: In one embodiment, a multi-stage decoder circuit is provided. Each stage of the decoder circuit is configured to perform one or more decoding iterations and produce an error mask indicating errors detected in the decoding stage. A compression circuit is coupled to one or more of the decoder stages and is configured to generate, for each of one or more of the plurality of decoder stages, a respective compressed error mask from the error mask produced by the decoder stage. A buffer circuit is coupled to the compression circuit and is configured to buffer the compressed error masks. A decompression circuit is coupled to the buffer circuit and is configured to decompress each of the compressed error masks. A combination circuit is coupled to the decompression circuit and is configured to combine the decompressed error masks into a single error mask.Type: GrantFiled: March 22, 2012Date of Patent: April 23, 2013Assignee: Xilinx, Inc.Inventors: Robert E. Payne, Graham Johnston
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Publication number: 20120223125Abstract: An example apparatus for replacement of a breached pipe section includes a first cylindrical pipe fitting having a first surface defining a first aperture, a middle pipe member, and a second cylindrical pipe fitting having a second surface defining a second aperture, and first and second aperture caps. A first end of each of the first and second pipe fittings is welded to opposite ends of the middle section, and a second end opposite of each of the first and second pipe fittings is welded through the respective first and second apertures to opposite ends of pipe surrounding the breached pipe section. The first and second aperture caps are welded to the apertures of the first and second pipe fittings to close the respective first and second apertures.Type: ApplicationFiled: May 14, 2012Publication date: September 6, 2012Inventor: John Graham Johnston, III
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Patent number: 8196969Abstract: An example apparatus for replacement of a breached pipe section includes a first cylindrical pipe fitting having a first surface defining a first aperture, a middle pipe member, and a second cylindrical pipe fitting having a second surface defining a second aperture, and first and second aperture caps. A first end of each of the first and second pipe fittings is welded to opposite ends of the middle section, and a second end opposite of each of the first and second pipe fittings is welded through the respective first and second apertures to opposite ends of pipe surrounding the breached pipe section. The first and second aperture caps are welded to the apertures of the first and second pipe fittings to close the respective first and second apertures.Type: GrantFiled: August 18, 2009Date of Patent: June 12, 2012Inventor: John Graham Johnston, III
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Publication number: 20100140919Abstract: An example apparatus for replacement of a breached pipe section includes a first cylindrical pipe fitting having a first surface defining a first aperture, a middle pipe member, and a second cylindrical pipe fitting having a second surface defining a second aperture, and first and second aperture caps. A first end of each of the first and second pipe fittings is welded to opposite ends of the middle section, and a second end opposite of each of the first and second pipe fittings is welded through the respective first and second apertures to opposite ends of pipe surrounding the breached pipe section. The first and second aperture caps are welded to the apertures of the first and second pipe fittings to close the respective first and second apertures.Type: ApplicationFiled: August 18, 2009Publication date: June 10, 2010Inventor: John Graham Johnston, III
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Publication number: 20080032950Abstract: The invention provides a compound of the formula I: wherein R is methyl, ethyl, propyl, isopropyl, butyl, pentyl, neo-pentyl or cyclohexyl, or a salt or solvate thereof. These compounds are selective GABAC receptor antagonists. The invention also provides pharmaceutical compositions comprising a compound of formula I or a pharmaceutically acceptable salt or solvate thereof. The invention also provides methods of enhancing the cognitive activity of an animal and methods of stimulating memory capacity in an animal, comprising the step of administering to the animal an effective amount of a compound of formula I or a pharmaceutically acceptable salt or solvate thereof.Type: ApplicationFiled: June 24, 2005Publication date: February 7, 2008Applicant: The University of SydneyInventors: Mary Chebib, Rohan Kumar, Graham Johnston, Hane Hanrahan
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Publication number: 20050004083Abstract: The invention provides compounds of the formula II: wherein R represents propyl, butyl, pentyl, neo-pentyl or cyclohexyl, and salts thereof. These compounds are selective GABAC receptor antagonists. The invention also provides a method of enhancing the cognitive activity of an animal and a method of stimulating memory capacity in an animal, comprising administering to the animal an effective amount of a compound of formula II or a pharmaceutically acceptable salt thereof.Type: ApplicationFiled: November 29, 2002Publication date: January 6, 2005Inventors: Mary Chebib, Jane Hanrahan, Graham Johnston