Patents by Inventor Iain Howieson
Iain Howieson 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: 10830660Abstract: A leak detection system comprising a substantially sealed accumulation chamber adapted to accommodate a single gas container, the accumulation chamber being sealed so that when a gas container is in the accumulation chamber gas leaked from that container accumulates. An optical detector is provided for detecting leaked gas, the detector including an optical cell. A controller directs a reference sample to the optical cell and subsequently directs a sample from the from the accumulation chamber to the optical cell. The optical detector is operable use both the reference sample and the accumulation chamber sample to detect leaked gas.Type: GrantFiled: October 14, 2015Date of Patent: November 10, 2020Assignee: Cascade Technologies Holdings LimitedInventors: Paul Miller, Graeme Walker, Iain Howieson, Ruth Lindley
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Patent number: 10408701Abstract: A leak detection system for detecting leaks in pressurized containers, the system comprising a leak test conveyor for moving each container and an accumulation tunnel through which the leak test conveyer extends, wherein the accumulation tunnel and the leak test conveyer together define at least one enclosed accumulation volume, each enclosed accumulation volume being sized to accommodate only a single container, thereby to allow gas leaking from the single container to accumulate, and a gas sensor for sensing accumulated leaked gas from the single container.Type: GrantFiled: March 13, 2018Date of Patent: September 10, 2019Assignee: CASCADE TECHNOLOGIES HOLDINGS LIMITEDInventors: Iain Howieson, Paul Miller, Stephen Waldron
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Publication number: 20180202887Abstract: A leak detection system for detecting leaks in pressurised containers, the system comprising a leak test conveyor for moving each container and an accumulation tunnel through which the leak test conveyer extends, wherein the accumulation tunnel and the leak test conveyer together define at least one enclosed accumulation volume, each enclosed accumulation volume being sized to accommodate only a single container, thereby to allow gas leaking from the single container to accumulate, and a gas sensor for sensing accumulated leaked gas from the single container.Type: ApplicationFiled: March 13, 2018Publication date: July 19, 2018Inventors: Iain Howieson, Paul Miller, Stephen Waldron
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Patent number: 9939342Abstract: A leak detection system for detecting leaks in pressurized containers, the system comprising a leak test conveyor for moving each container and an accumulation tunnel through which the leak test conveyer extends, wherein the accumulation tunnel and the leak test conveyer together define at least one enclosed accumulation volume, each enclosed accumulation volume being sized to accommodate only a single container, thereby to allow gas leaking from the single container to accumulate, and a gas sensor for sensing accumulated leaked gas from the single container.Type: GrantFiled: July 31, 2015Date of Patent: April 10, 2018Assignee: CASCADE TECHNOLOGIES HOLDINGS LIMITEDInventors: Iain Howieson, Paul Miller, Stephen Waldron
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Publication number: 20170108397Abstract: A leak detection system comprising a substantially sealed accumulation chamber adapted to accommodate a single gas container, the accumulation chamber being sealed so that when a gas container is in the accumulation chamber gas leaked from that container accumulates. An optical detector is provided for detecting leaked gas, the detector including an optical cell. A controller directs a reference sample to the optical cell and subsequently directs a sample from the from the accumulation chamber to the optical cell. The optical detector is operable use both the reference sample and the accumulation chamber sample to detect leaked gas.Type: ApplicationFiled: October 14, 2015Publication date: April 20, 2017Inventors: Paul Miller, Graeme Walker, Iain Howieson, Ruth Lindley
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Publication number: 20160223423Abstract: A leak detection system for detecting leaks in pressurised containers, the system comprising a leak test conveyor for moving each container and an accumulation tunnel through which the leak test conveyer extends, wherein the accumulation tunnel and the leak test conveyer together define at least one enclosed accumulation volume, each enclosed accumulation volume being sized to accommodate only a single container, thereby to allow gas leaking from the single container to accumulate, and a gas sensor for sensing accumulated leaked gas from the single container.Type: ApplicationFiled: July 31, 2015Publication date: August 4, 2016Inventors: Iain HOWIESON, Paul MILLER, Stephen WALDRON
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Patent number: 8438908Abstract: A leak detector (1) adapted to detect a leak (40) of a first material by detecting a change in a physical/chemical property of a second material. The leak detector includes a quantum cascade laser (5) and a detector (35).Type: GrantFiled: November 12, 2007Date of Patent: May 14, 2013Assignee: Cascade Technologies LimitedInventor: Iain Howieson
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Patent number: 8411273Abstract: An optical arrangement comprising a multi-mode fiber (16) for carrying single mode laser light (12); a randomizer (18) for randomizing spatial modes supported by the fiber and means for averaging, out the randomized spatial modes to recover the single spatial mode.Type: GrantFiled: November 12, 2007Date of Patent: April 2, 2013Assignee: Cascade Technologies LimitedInventors: Iain Howieson, Michael McCulloch
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Patent number: 8339606Abstract: A portal or gateway that includes a detector comprising a chirped laser; an open optical sample cell and a detector for detecting light from the chirped laser that has passed through the cell. The chirped laser may be a quantum cascade laser.Type: GrantFiled: November 12, 2007Date of Patent: December 25, 2012Assignee: Cascade Technologies LimitedInventor: Iain Howieson
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Publication number: 20100064777Abstract: A leak detector (1) adapted to detect a leak (40) of a first material by detecting a change in a physical/chemical property of a second material. The leak detector includes a quantum cascade laser (5) and a detector (35).Type: ApplicationFiled: November 12, 2007Publication date: March 18, 2010Applicant: Cascade Technologies LimitedInventor: Iain Howieson
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Publication number: 20100067014Abstract: A portal or gateway that includes a detector comprising a chirped laser; an open optical sample cell and a detector for detecting light from the chirped laser that has passed through the cell. The chirped laser may be a quantum cascade laser.Type: ApplicationFiled: November 12, 2007Publication date: March 18, 2010Applicant: Cascade Technologies LimitedInventor: Iain Howieson
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Publication number: 20100067013Abstract: An optical arrangement comprising a multi-mode fiber (16) for carrying single mode laser light (12); a randomizer (18) for randomizing spatial modes supported by the fiber and means for averaging, out the randomized spatial modes to recover the single spatial mode.Type: ApplicationFiled: November 12, 2007Publication date: March 18, 2010Applicant: Cascade Technologies LimitedInventors: Iain Howieson, Michael McCulloch