Patents by Inventor David MacKenzie

David MacKenzie 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).

  • Patent number: 8310237
    Abstract: The invention relates to an apparatus for detecting a conductive object (5). The apparatus comprises at least one transmitting device (2), which is operative to generate a first changing magnetic flux (11, 12), and at least one receiving device (10), which is operative, in use, to receive a second changing magnetic flux (9) generated by the conductive object (5) in dependence upon the first changing magnetic flux. In addition, the at least one transmitting device and the at least one receiving device are disposed in relation to each other so as to attenuate the first changing magnetic flux (11, 12) received directly by the at least one receiving device (10) from the at least one transmitting device (2).
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: November 13, 2012
    Assignee: Sense Marine Limited
    Inventors: Thomas M. Crawford, David Mackenzie
  • Publication number: 20110019103
    Abstract: An antenna unit for a TV. The antenna unit, which can be roof-mounted, includes a tuner and a demodulator so that it outputs a baseband signal containing IP packets representing a TV signal, requiring only a twisted pair Ethernet-type connection between the antenna unit and TV.
    Type: Application
    Filed: July 21, 2009
    Publication date: January 27, 2011
    Inventors: Peter Shintani, David Mackenzie, Mehrdad Memarnegad
  • Publication number: 20100198376
    Abstract: A system for providing localized audio content from a remote control device. Embodiments of the present invention utilize the proximity of the remote control device to provide audio content directly to a user without disturbing others. The complexity of normal subwoofer setup is eliminated as subwoofer audio channel is wirelessly delivered to the remote control device and rendered there. Embodiments further include the necessary signal processing circuitry to generate audio channels and send the signal wirelessly for playback in proximity to user.
    Type: Application
    Filed: February 5, 2009
    Publication date: August 5, 2010
    Applicants: SONY CORPORATION, SONY ELECTRONICS, INC.
    Inventors: David MacKenzie, Peter Shintani, Toshiyuki Suzuki
  • Publication number: 20100164499
    Abstract: The invention relates to an apparatus for detecting a conductive object (5). The apparatus comprises at least one transmitting device (2), which is operative to generate a first changing magnetic flux (11, 12), and at least one receiving device (10), which is operative, in use, to receive a second changing magnetic flux (9) generated by the conductive object (5) in dependence upon the first changing magnetic flux. In addition, the at least one transmitting device and the at least one receiving device are disposed in relation to each other so as to attenuate the first changing magnetic flux (11, 12) received directly by the at least one receiving device (10) from the at least one transmitting device (2).
    Type: Application
    Filed: August 31, 2007
    Publication date: July 1, 2010
    Inventors: Thomas M. Crawford, David Mackenzie
  • Patent number: 6303063
    Abstract: A method of converting a plastics material into a yarn includes heating the material to melt it and pumping the melted material through an extrusion die (114) to form an extruded filament (116). The extruded filament is cooled and passed through a first draw roller assembly (122) while elevating the temperature of the filament. The filament (116) is heated in a heating zone (126) as it exits the first draw roller assembly. Thereafter the filament is passed through a second draw roller assembly (134) operating at a different linear speed to the first draw roller assembly (122). The filament (116) is spooled after exiting the second draw roller assembly (134).
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: October 16, 2001
    Assignee: Peri-Dent Limited
    Inventors: Ian Roberts, David MacKenzie Hill
  • Patent number: 6192105
    Abstract: A method and device to calibrate an automatic exposure control (AEC) device in an x-ray imaging system is disclosed. An x-ray imaging system has an x-ray generator and tube to generate x-rays, an AEC device to control exposure of the x-rays, and an image sensing system, such as a film/screen combination or a digital recording system, which convert the x-rays into a converted medium, such as light, which can be easily sensed by a sensing medium. To calibrate the AEC device, a detector is placed in the position of the sensing medium to detect the converted medium. The detector detects signals indicative of the x-rays on a sensing medium. Simultaneously, a signal is obtained from the AEC. When the signal from the detector corresponds to a predetermined desired detector output, the output signal from the AEC is stored. The stored AEC output value corresponds to the target AEC output which will produce a proper exposure in the future for the same set of predetermined conditions of the imaging system.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: February 20, 2001
    Assignee: Communications & Power Industries Canada Inc.
    Inventors: David MacKenzie Hunter, Michael L.G. Joy
  • Patent number: 5900063
    Abstract: A method and apparatus for forming a coating on a substrate. The system (1) comprises an electron-beam evaporator (5) to produce an evaporant (6) from a source material, a plasma generation chamber (3), within which a magnetoplasma is generated, and a magnetic field supply means (10) to apply a magnetic field (11) to the apparatus (1), to transport the magnetoplasma (60) to the substrate (12).
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: May 4, 1999
    Assignee: The Australian National University
    Inventors: Roderick Boswell, Antoine Durandet, David MacKenzie
  • Patent number: 5852745
    Abstract: A technique for altering the operating conditions of a printer/plotter, which includes a laminar medium on which the coded marks are made in accordance with parameter values, an optical detector system for reading the laminar medium, a so-called acquisition system which picks up the signals from the optical system, and a microprocessor which can compare the coded values for the parameters with equivalence tables in order to provide the appropriate instructions to the printer/plotter components for changing the parameter settings.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: December 22, 1998
    Assignee: Hewlett-Packard Company
    Inventors: Juan B. Belon Fontal, Joseph Giralt Adroher, Andrew David Mackenzie
  • Patent number: PP22057
    Abstract: A new cultivar of Sedum plant, ‘Nonob’, that is characterized by its glossy foliage that emerges deep red-purple in color becoming grey-green and heavily suffused with red-purple when mature, its flowers in early summer that are pink in color and emerge from flower buds that are gray-purple in color, and its dense, low-growing plant habit.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: August 2, 2011
    Assignee: Hortech, Inc.
    Inventor: David MacKenzie
  • Patent number: PP22058
    Abstract: A new cultivar of Sedum plant, ‘Nonog’ that is characterized by its foliage with wavy margins and emerges greenish maroon in color becoming subtly variegated with gray green centers that blend into red-purple margins, its flowers in early summer that are dark pink in color and emerge from flower buds that are pink in color, and its dense, low-growing plant habit.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: August 2, 2011
    Assignee: Hortech, Inc.
    Inventor: David MacKenzie
  • Patent number: PP22059
    Abstract: A new cultivar of Sedum plant named ‘Noned’ that is characterized by its iridescent reddish purple foliage, its pink flower buds opening to pink flowers in summer and its dense, very low-growing plant habit.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: August 2, 2011
    Assignee: Hortech, Inc.
    Inventor: David MacKenzie
  • Patent number: PP22060
    Abstract: A new cultivar of Sedum plant, ‘Nonet’ that is characterized by its foliage that emerges reddish purple in color becoming subtly variegated with dark green centers that blend into reddish purple margins, its flowers in early summer that are deep pink in color and emerge from flower buds that are red-purple in color, and its dense, low-growing plant habit.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: August 2, 2011
    Assignee: Hortech, Inc.
    Inventor: David MacKenzie
  • Patent number: PP22061
    Abstract: A new cultivar of Sedum plant, ‘Nonio’ that is characterized by its foliage that emerges green in color and suffused with red-purple towards the apex and margins and matures to green centers with red-purple margins, its flowers in early summer that are purple-pink in color and emerge from flower buds that are pink in color, and its dense, very low-growing plant habit.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: August 2, 2011
    Assignee: Hortech, Inc.
    Inventor: David MacKenzie
  • Patent number: PP22115
    Abstract: A new cultivar of Allium plant named ‘Noneuq’ characterized by its compact habit, its strap-like glossy leaves, and its umbels of numerous dark purple-pink flowers.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: September 6, 2011
    Assignee: Hortech, Inc.
    Inventor: David MacKenzie
  • Patent number: PP22137
    Abstract: A new cultivar of Sedum plant, ‘Nonol’ that is characterized by its foliage that is green in color and suffused with red with red margins, its flowers in early summer that are light pink in color and emerge from flower buds that are pink in color, and its dense, very low growing plant habit.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: September 6, 2011
    Assignee: Hortech, Inc.
    Inventor: David MacKenzie
  • Patent number: PP22138
    Abstract: A new cultivar of Sedum plant, ‘Nonia’ that is characterized by its foliage that emerges green in color and suffused with maroon towards the apex and margins and matures to gray-green centers with thin maroon margins, its flowers in early summer that are pink in color that emerge from flower buds that are pink in color, and its dense, very low growing plant habit.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: September 6, 2011
    Assignee: Hortech, Inc.
    Inventor: David MacKenzie
  • Patent number: PP22139
    Abstract: A new cultivar of Sedum plant, ‘Nonef’ that is characterized by its foliage that emerges green in color suffused with grayed purple towards apex becoming green with grayed-purple margins when mature, its flowers buds that are grayish green and pink in color opening to pink flowers in summer and its dense, low growing plant habit.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: September 6, 2011
    Assignee: Hortech, Inc.
    Inventor: David MacKenzie
  • Patent number: PP22153
    Abstract: A new cultivar of Sedum plant, ‘Noner’ that is characterized by its foliage that is green in color with bright red margins with leaves held nearly horizontal when mature, its flowers in early summer that are pink in color and emerge from flower buds that are pink in color, and its dense, very low growing plant habit.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: September 13, 2011
    Assignee: Hortech, Inc.
    Inventor: David MacKenzie
  • Patent number: PP22154
    Abstract: A new cultivar of Sedum plant, ‘Nonov’, that is characterized by its foliage that emerges very dark reddish purple in color becoming subtly variegated with gray green centers that blend into dark reddish purple margins, its flowers that are deep red in color in early summer that emerge from flower buds that are gray-purple in color, and its dense, low-growing plant habit.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: September 13, 2011
    Assignee: Hortech, Inc.
    Inventor: David MacKenzie