Patents by Inventor David Senior
David Senior 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: 10535912Abstract: A power divider capable of implementation in a compact multilayer surface mount component to perform power division/combining with low insertion loss, wide bandwidth, design flexibility and high power handling capabilities. The power divider has a first pair of coupled transmission lines interconnecting the input to the outputs, a second pair of coupled transmission lines interconnecting the output ports to grounded isolation resistors, and a single transmission line interconnecting the second pair of coupled transmission lines. The surface mount implementation is by a first layer supporting the ports, a second layer providing edge coupled lines, a third layer having ground plane, a fourth layer and a fifth layer each supporting one of a pair of broadside coupled lines, a sixth layer with another ground plane, and a seventh layer including a single line interconnecting the broadside coupled lines.Type: GrantFiled: August 9, 2017Date of Patent: January 14, 2020Assignee: Anaren, Inc.Inventors: David Senior, Chong Mei
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Publication number: 20190051964Abstract: A power divider capable of implementation in a compact multilayer surface mount component to perform power division/combining with low insertion loss, wide bandwidth, design flexibility and high power handling capabilities. The power divider has a first pair of coupled transmission lines interconnecting the input to the outputs, a second pair of coupled transmission lines interconnecting the output ports to grounded isolation resistors, and a single transmission line interconnecting the second pair of coupled transmission lines. The surface mount implementation is by a first layer supporting the ports, a second layer providing edge coupled lines, a third layer having ground plane, a fourth layer and a fifth layer each supporting one of a pair of broadside coupled lines, a sixth layer with another ground plane, and a seventh layer including a single line interconnecting the broadside coupled lines.Type: ApplicationFiled: August 9, 2017Publication date: February 14, 2019Applicant: Anaren, Inc.Inventors: David Senior, Chong Mei
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Patent number: 9028782Abstract: The present invention provides a method of separating nickel bearing sulphides from mined ores or concentrates of mined ores that contain talc particles is disclosed. The method comprises adjusting the Eh of a slurry of mined ores or concentrates of mined ores and making particles of nickel bearing sulphides less hydrophobic than talc particles and floating the nickel bearing sulphide particles from the slurry.Type: GrantFiled: January 9, 2009Date of Patent: May 12, 2015Assignee: BHP Billiton SSM Development Pty Ltd.Inventors: Geoffery David Senior, Brendan Pyke, Brian Judd
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Patent number: 8753593Abstract: A method of separating nickel bearing sulphides from mined ores or concentrates of mined ores that contain talc is disclosed. The method comprises treating a slurry of mined ores or concentrates of mined ores in at least one flotation stage and in at least one cleaner circuit. The method further comprises sequenced re-grinding, as described herein, of particles in the slurry.Type: GrantFiled: January 9, 2009Date of Patent: June 17, 2014Assignee: BHP Billiton SSM Development Pty Ltd.Inventors: Geoffery David Senior, Brendan Pyke, Brian Judd
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Patent number: 8734757Abstract: A process for producing a mineral concentrate product that at is at least a substantially odor-free product comprises any one or more than one of (a) organics removal by (i) treatment of a froth product slurry containing floated mineral particles to remove organic compounds from the mineral particles and/or (ii) thermal treatment, and (b) addition of chemicals to prevent residual organic compounds on mineral concentrates being converted to odorous compounds, particularly while the concentrates are being stock-piled or transported.Type: GrantFiled: April 6, 2009Date of Patent: May 27, 2014Assignee: BHP Billiton SSM Development Pty Ltd.Inventors: Chris du Plessis, Geoffery David Senior
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Publication number: 20110150728Abstract: A process for producing a mineral concentrate product that at is at least a substantially odour-free product comprises any one or more than one of (a) organics removal by (i) treatment of a froth product slurry containing floated mineral particles to remove organic compounds from the mineral particles and/or (ii) thermal treatment, and (b) addition of chemicals to prevent residual organic compounds on mineral concentrates being converted to odorous compounds, particularly while the concentrates are being stock-piled or transported.Type: ApplicationFiled: April 6, 2009Publication date: June 23, 2011Inventors: Chris Du Plessis, Geoffery David Senior
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Publication number: 20110039477Abstract: The present invention provides a method of separating nickel bearing sulphides from mined ores or concentrates of mined ores that contain talc particles is disclosed. The method comprises adjusting the Eh of a slurry of mined ores or concentrates of mined ores and making particles of nickel bearing sulphides less hydrophobic than talc particles and floating the nickel bearing sulphide particles from the slurry.Type: ApplicationFiled: January 9, 2009Publication date: February 17, 2011Inventors: Geoffery David Senior, Brendan Pyke, Brian Judd
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Publication number: 20110038770Abstract: A method of separating nickel bearing sulphides from mined ores or concentrates of mined ores that contain talc is disclosed. The method comprises treating a slurry of mined ores or concentrates of mined ores in at least one flotation stage and in at least one cleaner circuit. The method further comprises sequenced re-grinding, as described herein, of particles in the slurry.Type: ApplicationFiled: January 9, 2009Publication date: February 17, 2011Inventors: Geoffery David Senior, Brendan Pyke, Brian Judd
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Patent number: 7121419Abstract: The combination of a closure (110) and an in-bore fitment (201) is provided for a container. The closure (110) comprises a generally plain crown (120) with a tubular skirt (130) depending from its periphery. The tubular skirt (130) has a first weakened zone (140) defining a first tamperevident portion (150); the first weakened zone (140) is adapted to break on first opening of the container. The tubular skirt (150) has a second weakened zone (190) defining a second tamperevident portion (150). The second weakened zone (190) is protected from breakage on first opening of the container but is arranged to break if an attempt is made to remove the in-bore fitment (201) from the container.Type: GrantFiled: March 28, 2002Date of Patent: October 17, 2006Assignee: Crown Obrist GmbHInventors: Andrew Ferry, James McLennan, David Senior, John Sharpe
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Patent number: 7028845Abstract: The present invention relates generally to a process for flotation of sulphide minerals where a flotation pulp is separated into a coarse stream and a fine stream, preferably containing particles coarser than about 30 micron and particles finer than about 30 micron, respectively. Typically, alkali and depressant are added to the coarse flotation stream only and acid and activator are added to the fine flotation stream only. During flotation of the fine stream, acid and/or activator may be added at the conditioning, cleaning, re-cleaning, cleaner-scavenging or third cleaning stage. During flotation of the coarse stream, alkali and/or depressant may be added at the conditioning or cleaning stage.Type: GrantFiled: February 28, 2002Date of Patent: April 18, 2006Assignee: WMC Resources LimitedInventor: Geoffrey David Senior
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Publication number: 20050258128Abstract: The combination of a closure (110) and an in-bore fitment (201) is provided for a container. The closure (110) comprises a generally plain crown (120) with a tubular skirt (130) depending from its periphery. The tubular skirt (130) has a first weakened zone (140) defining a first tamperevident portion (150); the first weakened zone (140) is adapted to break on first opening of the container. The tubular skirt (150) has a second weakened zone (190) defining a second tamperevident portion (150). The second weakened zone (190) is protected from breakage on first opening of the container but is arranged to break if an attempt is made to remove the in-bore fitment (201) from the container.Type: ApplicationFiled: March 28, 2002Publication date: November 24, 2005Inventors: Andrew Ferry, James McLennan, David Senior, John Sharpe
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Patent number: 6817479Abstract: A closure (2A) overlies a liner (6) which seals a container mount defined by a peripheral edge (12) of the container. The liner (6) includes a sealing flange (31) having an upstanding outermost terminal rim (40) of resilient material which is folded inwardly during closing movement of the closure shell (2A) toward the sealing flange (31) to form an unflattened fold constituting a biasing means for biasing the periphery of the sealing flange (31) against the peripheral edge (12) of the container mouth.Type: GrantFiled: August 29, 2001Date of Patent: November 16, 2004Assignee: Crown Cork & Seal Technologies CorporationInventors: Andrew Ferry, Peter Douglas Kerr, David Senior
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Publication number: 20040142129Abstract: The gas permeance of polyester bottles or other packaging article is improved by the combination of an oxygen scavenging material provided in the wall of the article and an external barrier to gas flow.Type: ApplicationFiled: December 1, 2003Publication date: July 22, 2004Inventors: Lindsay Mulholland, Nina Goodrich, David Senior, Boris Chiu, Steven Li
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Publication number: 20040101458Abstract: The present invention relates generally to a process for flotation of sulphide minerals where a flotation pulp is separated into a coarse stream and a fine stream, preferably containing particles coarser than about 30 micron and particles finer than about 30 micron, respectively. Typically, alkali and depressant are added to the coarse flotation stream only and acid and activator are added to the fine flotation stream only. During flotation of the fine stream, acid and/or activator may be added at the conditioning, cleaning, re-cleaning, cleaner-scavenging or third cleaning stage. During flotation of the coarse stream, alkali and/or depressant may be added at the conditioning or cleaning stage.Type: ApplicationFiled: December 30, 2003Publication date: May 27, 2004Inventor: Geoffrey David Senior
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Patent number: 6170669Abstract: A process for floating fine particles containing metal values of an iron-bearing sulphide mineral ore including the steps of conditioning the aqueous pulp of ore at a pH of between about 7 and about 10 with a reducing agent which is preferably oxy-sulphur compound which dissociates to form oxy-sulphur ions having the general formula: SnOyz− where n is greater than 1; y is greater than 2; and z is the valance of the ion. A suitable collector is then added to the conditioned aqueous pulp to further condition the pulp and the pulp potential of the pulp raised to a sufficient level for the collector to adsorb onto the sulphide mineral ore. Gas is then bubbled through the aqueous pulp to subject the pulp to froth flotation. The froth from the flotation process is recovered to produce a concentrate of fine sulphide mineral and other metal values.Type: GrantFiled: June 30, 1998Date of Patent: January 9, 2001Assignee: The Commonwealth of Australia Commonwealth Scientific and Industrial Research OrganizationInventors: Geoffrey David Senior, Raimo Ilmari Ahveninen