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).
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Patent number: 8310237Abstract: 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: GrantFiled: August 31, 2007Date of Patent: November 13, 2012Assignee: Sense Marine LimitedInventors: Thomas M. Crawford, David Mackenzie
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Publication number: 20110019103Abstract: 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: ApplicationFiled: July 21, 2009Publication date: January 27, 2011Inventors: Peter Shintani, David Mackenzie, Mehrdad Memarnegad
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Publication number: 20100198376Abstract: 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: ApplicationFiled: February 5, 2009Publication date: August 5, 2010Applicants: SONY CORPORATION, SONY ELECTRONICS, INC.Inventors: David MacKenzie, Peter Shintani, Toshiyuki Suzuki
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Publication number: 20100164499Abstract: 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: ApplicationFiled: August 31, 2007Publication date: July 1, 2010Inventors: Thomas M. Crawford, David Mackenzie
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Patent number: 6303063Abstract: 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: GrantFiled: June 11, 1999Date of Patent: October 16, 2001Assignee: Peri-Dent LimitedInventors: Ian Roberts, David MacKenzie Hill
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Patent number: 6192105Abstract: 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: GrantFiled: November 25, 1998Date of Patent: February 20, 2001Assignee: Communications & Power Industries Canada Inc.Inventors: David MacKenzie Hunter, Michael L.G. Joy
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Patent number: 5900063Abstract: 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: GrantFiled: September 5, 1996Date of Patent: May 4, 1999Assignee: The Australian National UniversityInventors: Roderick Boswell, Antoine Durandet, David MacKenzie
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Patent number: 5852745Abstract: 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: GrantFiled: October 1, 1996Date of Patent: December 22, 1998Assignee: Hewlett-Packard CompanyInventors: Juan B. Belon Fontal, Joseph Giralt Adroher, Andrew David Mackenzie
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Patent number: PP22057Abstract: 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: GrantFiled: February 26, 2010Date of Patent: August 2, 2011Assignee: Hortech, Inc.Inventor: David MacKenzie
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Patent number: PP22058Abstract: 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: GrantFiled: February 26, 2010Date of Patent: August 2, 2011Assignee: Hortech, Inc.Inventor: David MacKenzie
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Patent number: PP22059Abstract: 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: GrantFiled: February 26, 2010Date of Patent: August 2, 2011Assignee: Hortech, Inc.Inventor: David MacKenzie
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Patent number: PP22060Abstract: 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: GrantFiled: February 26, 2010Date of Patent: August 2, 2011Assignee: Hortech, Inc.Inventor: David MacKenzie
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Patent number: PP22061Abstract: 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: GrantFiled: February 26, 2010Date of Patent: August 2, 2011Assignee: Hortech, Inc.Inventor: David MacKenzie
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Patent number: PP22115Abstract: 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: GrantFiled: February 4, 2010Date of Patent: September 6, 2011Assignee: Hortech, Inc.Inventor: David MacKenzie
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Patent number: PP22137Abstract: 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: GrantFiled: February 26, 2010Date of Patent: September 6, 2011Assignee: Hortech, Inc.Inventor: David MacKenzie
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Patent number: PP22138Abstract: 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: GrantFiled: February 26, 2010Date of Patent: September 6, 2011Assignee: Hortech, Inc.Inventor: David MacKenzie
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Patent number: PP22139Abstract: 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: GrantFiled: February 26, 2010Date of Patent: September 6, 2011Assignee: Hortech, Inc.Inventor: David MacKenzie
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Patent number: PP22153Abstract: 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: GrantFiled: February 26, 2010Date of Patent: September 13, 2011Assignee: Hortech, Inc.Inventor: David MacKenzie
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Patent number: PP22154Abstract: 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: GrantFiled: February 26, 2010Date of Patent: September 13, 2011Assignee: Hortech, Inc.Inventor: David MacKenzie