Patents by Inventor David Francis Lupton
David Francis Lupton 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: 9810714Abstract: A probe pin (100, 100?) for electronic testing of semi-conductor elements is provided. The pin contains an electrically conductive core element (200) made up of a metallic alloy, and an electrically insulating jacket element (300) which surrounds the core element (200) over regions thereof. The core element (200) contains a distal contact section (210) for electrical contacting to a semi-conductor element. The metallic alloy of the core element contains at least 67% by weight rhodium, 0.1% by weight to 1% by weight zirconium, up to 1% by weight yttrium, and up to 1% by weight cerium. A method for producing a probe pin is also described.Type: GrantFiled: November 7, 2013Date of Patent: November 7, 2017Assignee: Heraeus Deutschland GmbH & Co. KGInventors: Per Soerensen, Nicole Staudt, Reinhold Weiland, Ingo Prunzel, David Francis Lupton
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Publication number: 20160252547Abstract: A probe pin (100, 100?) for electronic testing of semi-conductor elements is provided. The pin contains an electrically conductive core element (200) made up of a metallic alloy, and an electrically insulating jacket element (300) which surrounds the core element (200) over regions thereof. The core element (200) contains a distal contact section (210) for electrical contacting to a semi-conductor element. The metallic alloy of the core element contains at least 67% by weight rhodium, 0.1% by weight to 1% by weight zirconium, up to 1% by weight yttrium, and up to 1% by weight cerium. A method for producing a probe pin is also described.Type: ApplicationFiled: November 7, 2013Publication date: September 1, 2016Inventors: Per Soerensen, Nicole Staudt, Reinhold Weiland, Ingo Prunzel, David Francis Lupton
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Patent number: 8613788Abstract: The addition of 0.5 to 30 ppm boron and 0.5 to 20 ppm calcium to iridium and the Zr- and Hf-free alloys thereof and rhodium and the Zr- and Hf-free alloys thereof surprisingly increases the creep rupture strength at high temperatures, in particular around 1,800° C.Type: GrantFiled: June 28, 2010Date of Patent: December 24, 2013Assignee: Heraeus Materials Technology GmbH & Co. KGInventors: Uwe Hortig, Verena Baier, Harald Manhardt, Oliver Warkentin, David Francis Lupton
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Publication number: 20130186146Abstract: Methods for reducing the evaporation rate of platinum and Pt alloys upon their use at high temperatures >1,200° C. in an oxidizing atmosphere include the steps: (A) providing a component made of platinum or a platinum alloy; (B) wrapping the outer surface of the component with a flexible bandage having open porosity and provided with an oxide ceramic material and/or a glass-forming material; (C) using the component at operating temperatures >1,200° C. Methods for scavenging noble metal oxides evaporating or sublimating from the surface of platinum or Pt alloys include: (A) providing a component made of platinum or a platinum alloy; (B) wrapping the outer surface of the component with a flexible bandage having open porosity; and (C) using the component at operating temperatures >1,200° C. Correspondingly wrapped components are also provided.Type: ApplicationFiled: October 5, 2011Publication date: July 25, 2013Applicant: HERAEUS MATERIALS TECHNOLOGY GMBH & CO. KGInventors: Annette Lukas, David Francis Lupton, Nicole Gübler, Harald Manhardt, Mark Bissinger, Uwe Jantsch, Stefan Vorberg
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Patent number: 8293678Abstract: A metal fiber based on one or several elements from the group of platinum, palladium, rhodium, ruthenium, and iridium with 0 to 30% by weight of one or several additional alloy elements from the group of nickel, cobalt, gold, rhenium, molybdenum, and tungsten, contains 1 to 500 ppm by weight of boron or phosphorus. A non-woven material or netting, in particular for the production of nitrogen oxide or for the production of hydrocyanic acid, is made of such fibers. For the production of fibers based on noble metals having up to 30% by weight of additional alloy metals by drawing the fibers from a melt, the melting point of the metal is reduced by at least 400 ° C., before drawing of the fibers, by additionally alloying with boron or phosphorus, and the boron or the phosphorus is removed again from the fibers.Type: GrantFiled: July 30, 2009Date of Patent: October 23, 2012Assignee: Heraeus Materials Technology GmbH & Co. KGInventors: Uwe Jantsch, David Francis Lupton, Harald Manhardt, Stefan Vorberg
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Patent number: 8226855Abstract: A solid body of a metal alloy comprising less than 99% by weight of noble metal and more than 1% by weight of dispersion-strengthening metals is converted for production of a dispersion-strengthened platinum material by at least 90% oxidation of the dispersion-strengthening metals into a dispersion-strengthened platinum material. The dispersion-strengthened platinum material contains a noble metal component of platinum or a platinum alloy amounting to between 95 and 99% by weight and a dispersion-strengthening agent. The noble metal component includes at least 55% by weight Pt, 0 to 30% by weight Rh, 0 to 30% by weight Au, and 0 to 40% by weight Pd. The remaining proportion by mass of more than 1% by weight is a dispersion-strengthening agent, which contains at least one metal oxidized at least 90% by weight with oxygen, the metal being selected from the group of Ce, Zr, Sc, and Y.Type: GrantFiled: February 14, 2008Date of Patent: July 24, 2012Assignee: Heraeus Materials Technology GmbH & Co. KGInventors: Harald Manhardt, Tanja Eckardt, David Francis Lupton
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Publication number: 20120000582Abstract: Castings made of boron-containing alloys based on at least one platinum group metal are treated by thermal ageing in the presence of oxygen and at temperatures below the melting point of the alloy. This enables the alloys to be processed at temperatures customary in the jewelry industry. The treated castings can also be processed into medical technology products.Type: ApplicationFiled: February 26, 2010Publication date: January 5, 2012Applicant: HERAEUS MATERIALS TECHNOLOGY GMBH & CO. KGInventors: Harald Manhardt, Nicole Gübler, Ulrich H. M. Koops, David Francis Lupton
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Publication number: 20110198983Abstract: A method is provided for producing a wire or tape, especially for use as an electrode or electrode tip in spark plugs. The method includes the following steps: (a) producing an intermetallic compound having a melting point above 1700° C.; (b) grinding the intermetallic compound; (c) mixing the intermetallic compound with metal powder; (d) introducing the mixture obtained in step (c) in a tube produced from ductile material; and (e) shaping the tube filled in step (d) to give a wire or tape. Also provided are a wrapped wire or wrapped tape, especially a semifinished product for producing electrodes or electrode tips of spark plugs.Type: ApplicationFiled: March 29, 2007Publication date: August 18, 2011Applicant: W.C. HERAEUS GMBHInventors: Harald Manhardt, David Francis Lupton, Tanja Eckardt, Holger Zingg
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Publication number: 20110129406Abstract: A metal fiber based on one or several elements from the group of platinum, palladium, rhodium, ruthenium, and iridium with 0 to 30% by weight of one or several additional alloy elements from the group of nickel, cobalt, gold, rhenium, molybdenum, and tungsten, contains 1 to 500 ppm by weight of boron or phosphorus. A non-woven material or netting, in particular for the production of nitrogen oxide or for the production of hydrocyanic acid, is made of such fibers. For the production of fibers based on noble metals having up to 30% by weight of additional alloy metals by drawing the fibers from a melt, the melting point of the metal is reduced by at least 400 ° C., before drawing of the fibers, by additionally alloying with boron or phosphorus, and the boron or the phosphorus is removed again from the fibers.Type: ApplicationFiled: July 30, 2009Publication date: June 2, 2011Applicant: W.C. HERAEUS GMBHInventors: Uwe Jantsch, David Francis Lupton, Harald Manhardt, Stefan Vorberg
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Publication number: 20100329922Abstract: The addition of 0.5 to 30 ppm boron and 0.5 to 20 ppm calcium to iridium and the Zr- and Hf-free alloys thereof and rhodium and the Zr- and Hf-free alloys thereof surprisingly increases the creep rupture strength at high temperatures, in particular around 1,800° C.Type: ApplicationFiled: June 28, 2010Publication date: December 30, 2010Applicant: W.C. HERAEUS GMBHInventors: Uwe Hortig, Verena Baier, Harald Manhardt, Oliver Warkentin, David Francis Lupton
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Publication number: 20100276646Abstract: A solid body of a metal alloy comprising less than 99% by weight of noble metal and more than 1% by weight of dispersion-strengthening metals is converted for production of a dispersion-strengthened platinum material by at least 90% oxidation of the dispersion-strengthening metals into a dispersion-strengthened platinum material. The dispersion-strengthened platinum material contains a noble metal component and a dispersion-strengthening agent, the proportion by mass of the noble metal component amounting to between 95 and 99% by weight and the noble metal component of platinum or a platinum alloy including at least 55% by weight Pt, 0 to 30% by weight Rh, 0 to 30% by weight Au, and 0 to 40% by weight Pd. The remaining proportion by mass of more than 1% by weight is a dispersion-strengthening agent, which contains at least one metal oxidized at least 90% by weight with oxygen, the metal being selected from the group of Ce, Zr, Sc, and Y.Type: ApplicationFiled: February 14, 2008Publication date: November 4, 2010Applicant: W.C. Heraeus GmbHInventors: Harald MANHARDT, Tanja ECKARDT, David Francis LUPTON
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Patent number: 7815849Abstract: An iridium alloy is produced having at least 85% by weight iridium, at least 0.005% by weight molybdenum, 0.001 to 0.6% by weight hafnium and, optionally, rhenium, the sum of molybdenum and hafnium being between 0.002 and 1.2% by weight. The iridium alloy is produced in a process, in which an IrMo and an IrHf master alloy, respectively, are created in an electric arc and immersed into an iridium melt, optionally together with Re.Type: GrantFiled: July 7, 2006Date of Patent: October 19, 2010Assignee: W.C. Heraeus GmbHInventors: Michael Koch, David Francis Lupton, Harald Manhardt, Tobias Mueller, Reinhold Weiland, Bernd Fischer
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Patent number: 7736752Abstract: A wire, strip or reshaped part is produced from an alloy based on platinum, palladium or a mixture of platinum and palladium and hardened by oxide dispersion. The wire, strip or reshaped part cross-section exhibits a peripheral zone in which at least one relatively easily volatilized oxide generator is depleted by at least 25%. In addition, a process is provided for production of such a wire, strip or reshaped part, in which a porous skin is produced thermally on the wire, strip or reshaped part, and the porous skin is compacted by conversion into a soft or impermeable skin.Type: GrantFiled: February 14, 2008Date of Patent: June 15, 2010Assignee: W.C. Heraeus GmbHInventors: Harald Manhardt, Carsten Mohr, David Francis Lupton
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Publication number: 20080295925Abstract: A wire, strip or reshaped part is produced from an alloy based on platinum, palladium or a mixture of platinum and palladium and hardened by oxide dispersion. The wire, strip or reshaped part cross-section exhibits a peripheral zone in which at least one relatively easily volatilized oxide generator is depleted by at least 25%. In addition, a process is provided for production of such a wire, strip or reshaped part, in which a porous skin is produced thermally on the wire, strip or reshaped part, and the porous skin is compacted by conversion into a soft or impermeable skin.Type: ApplicationFiled: February 14, 2008Publication date: December 4, 2008Applicant: W.C. Heraeus GmbHInventors: Harald MANHARDT, Carsten MOHR, David Francis LUPTON
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Publication number: 20080213123Abstract: The invention relates to an iridium alloy of at least 85% by weight iridium, at least 0.005% by weight molybdenum, 0.001 to 0.6% by weight hafnium and, if necessary, rhenium, the sum of molybdenum and hafnium being between 0.002 and 1.2% by weight, and to a process for the production of an iridium alloy, an IrMo and an IrHf master alloy, respectively, being produced in the electric arc and immersed into an iridium melt, if necessary together with Re.Type: ApplicationFiled: July 7, 2006Publication date: September 4, 2008Applicant: W.C. Heraeus GmbHInventors: Michael Koch, David Francis Lupton, Harald Manhardt, Tobias Mueller, Reinhold Weiland, Bernd Fischer
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Patent number: 6800392Abstract: A hydrogen permeation membrane including a niobium alloy with 5-25 wt. % of at least one element from the group consisting of palladium, ruthenium, rhenium, platinum, gold, and rhodium.Type: GrantFiled: November 5, 2001Date of Patent: October 5, 2004Assignee: W. C. Heraeus GmbH & Co. KGInventors: Uwe Jantsch, Harald Manhardt, David Francis Lupton
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Patent number: 6663728Abstract: A gold-free platinum material that is dispersion-strengthened by small, finely dispersed particles of base metal oxide. The base metal is either 0.01-0.5 wt. % Sc or a mixture/alloy of Sc and at least one metal from the group consisting of Zr, Y, and Ce with a total base metal content of 0.05-0.5 wt. %.Type: GrantFiled: September 4, 2001Date of Patent: December 16, 2003Assignee: W.C. Heraeus GmbH & Co. KGInventors: Harald Manhardt, David Francis Lupton, Wulf Kock
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Patent number: 6649134Abstract: A process and a device for reducing the nitrous oxide which is formed during the catalytic combustion of ammonia and oxygen to form nitrogen oxides. A catalyst system including at least one first catalyst mesh element and at least one second catalyst mesh element is used for the catalytic combustion of ammonia and oxygen to form nitrogen oxides, where the minimum of one first catalyst mesh element is a platinum-rhodium mesh and the minimum of one second, downstream catalyst mesh element is a palladium-rhodium mesh with 2-4 wt. % of rhodium.Type: GrantFiled: December 17, 2001Date of Patent: November 18, 2003Assignee: W. C. Heraeus GmbH & Co. KGInventors: Marek Gorywoda, David Francis Lupton, Jonathan Lund
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Publication number: 20030124046Abstract: A process and a device for reducing the nitrous oxide which is formed during the catalytic combustion of ammonia and oxygen to form nitrogen oxides is provided, where a catalyst system consisting of at least one first catalyst mesh element and at least one second catalyst mesh element is used for the catalytic combustion of ammonia and oxygen to form nitrogen oxides, where the minimum of one first catalyst mesh element consists of platinum-rhodium mesh and the minimum of one second, downstream catalyst mesh element consists of palladium-rhodium mesh with 2-4 wt. % of rhodium.Type: ApplicationFiled: December 17, 2001Publication date: July 3, 2003Inventors: Marek Gorywoda, David Francis Lupton, Jonathan Lund
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Patent number: 6414451Abstract: A discharge lamp having a discharge vessel through whose wall at least one current feedthrough is guided. A discharge electrode is arranged on one end of the current feedthrough. The current feedthrough is made of at least two separate parts and at least one part is made of niobium, tantalum or alloys based on niobium and/or tantalum. The second part is made of material which is more resistant to oxidation than the first part.Type: GrantFiled: March 20, 2001Date of Patent: July 2, 2002Assignee: W. C. Heraeus Holding GmbH & Co. KGInventors: Reinhard Baake, David Francis Lupton