Patents by Inventor Joseph Poon
Joseph Poon 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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Publication number: 20230041431Abstract: Embodiments relate to a system for predicting thermodynamic phase of a material. The system includes a phase diagram image scanning processing module configured to scan a binary phase diagram for each material to be used as a component of a high-entropy alloy (HEA). The system includes a feature computation processing module configured to generate a primary feature and an adaptive feature. The primary feature is representative of a probability that the HEA will exhibit a solid solution phase and/or an intermetallic phase. The adaptive feature is representative of a factor favoring formation of a desired intermetallic HEA phase. The system includes a prediction module configured to encode the primary feature and/or the adaptive feature with thermodynamic data associated with formation of HEA alloy phases to provide an output representation of the HEA alloy phases for a material under analysis.Type: ApplicationFiled: July 20, 2021Publication date: February 9, 2023Applicant: University of Virginia Patent FoundationInventors: Joseph Poon, Jie Qi
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Patent number: 9555467Abstract: Amorphous steel composites with enhanced mechanical properties and related methods for toughening amorphous steel alloys. The composites are formed from monolithic amorphous steel and hard ceramic particulates, which must be embedded in the glass matrix through melting at a temperature above the melting point for the steel but below the melting point for the ceramic. The ceramics may be carbides, nitrides, borides, iron-refractory carbides, or iron-refractory borides. The produced composites may be one of two types, primarily distinguished by the methods for embedding the ceramic particulates in the steel. These methods may be applied to a variety of amorphous steels as well as other non-ferrous amorphous metals, and the resulting composites can be used in various applications and utilizations.Type: GrantFiled: May 18, 2015Date of Patent: January 31, 2017Assignee: University of Virginia Patent FoundationInventors: S. Joseph Poon, Gary J. Shiflet, Xiao-Jun Gu
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Publication number: 20160031002Abstract: Amorphous steel composites with enhanced mechanical properties and related methods for toughening amorphous steel alloys. The composites are formed from monolithic amorphous steel and hard ceramic particulates, which must be embedded in the glass matrix through melting at a temperature above the melting point for the steel but below the melting point for the ceramic. The ceramics may be carbides, nitrides, borides, iron-refractory carbides, or iron-refractory borides. The produced composites may be one of two types, primarily distinguished by the methods for embedding the ceramic particulates in the steel. These methods may be applied to a variety of amorphous steels as well as other non-ferrous amorphous metals, and the resulting composites can be used in various applications and utilizations.Type: ApplicationFiled: May 18, 2015Publication date: February 4, 2016Applicant: University of Virginia Patent FoundationInventors: S. Joseph Poon, Gary J. Shiflet, Xiao-Jun Gu
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Patent number: 9051630Abstract: Amorphous steel composites with enhanced mechanical properties and related methods for toughening amorphous steel alloys. The composites are formed from monolithic amorphous steel and hard ceramic particulates, which must be embedded in the glass matrix through melting at a temperature above the melting point for the steel but below the melting point for the ceramic. The ceramics may be carbides, nitrides, borides, iron-refractory carbides, or iron-refractory borides. An optical micrograph of such a composite including niobium carbide particulates is shown in FIG. 2A. The produced composites may be one of two types, primarily distinguished by the methods for embedding the ceramic particulates in the steel. These methods may be applied to a variety of amorphous steels as well as other non-ferrous amorphous metals, and the resulting composites can be used in various applications and utilizations.Type: GrantFiled: February 23, 2006Date of Patent: June 9, 2015Assignee: University of Virginia Patent FoundationInventors: S. Joseph Poon, Gary J. Shiflet, Xiao-Jun Gu
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Patent number: 8313588Abstract: An amorphous magnetic alloy is presented. The alloy has the general formula: (Fe1-xCox)nMoaPbBcCdSie, wherein n is the atomic percent of iron and cobalt; x is the fraction of n; a, b, c, d and e are the atomic percent of molybdenum, phosphorous, boron, carbon and silicon respectively and n, x, a, b, c, d and e are defined by following relationship: 76?n?85; 0.05<x?0.50; 0?a?4; b?10; 0?c<d; and 0.1?e?2. Articles comprising the alloy and methods employing the alloy for making articles are also presented.Type: GrantFiled: October 30, 2009Date of Patent: November 20, 2012Assignee: General Electric CompanyInventors: Luana Emiliana Iorio, Francis Johnson, Pazhayannur Ramanathan Subramanian, Gary Shiflet, Joseph Poon, Sriparna Bhattacharya
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Publication number: 20120067468Abstract: An amorphous magnetic alloy is presented. The alloy has the general formula: (Fe1-xCox)nMoaPbBcCdSie, wherein n is the atomic percent of iron and cobalt; x is the fraction of n; a, b, c, d and e are the atomic percent of molybdenum, phosphorous, boron, carbon and silicon respectively and n, x, a, b, c, d and e are defined by following relationship: 76?n?85; 0.05<x?0.50; 0?a?4; b?10; 0?c<d; and 0.1?e?2. Articles comprising the alloy and methods employing the alloy for making articles are also presented.Type: ApplicationFiled: October 30, 2009Publication date: March 22, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Luana Emiliana Iorio, Francis Johnson, Pazhayannur Ramanathan Subramanian, Gary Shiflet, Joseph Poon, Sriparna Bhattacharya
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Publication number: 20110000585Abstract: The present invention relates to novel non-ferromagnetic amorphous steel alloys represented by the general formula: Fe—Mn-(Q)-B—M, wherein Q represents one or more elements selected from the group consisting of Se, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and M represents one or more elements selected from the group consisting of Cr, Co, Mo, C and Si. Typically the atomic percentage of the Q constituent is 10 or less.Type: ApplicationFiled: November 6, 2008Publication date: January 6, 2011Inventors: S. Joseph Poon, Vijayabarathi Ponnambalam, Gary J. Shiflet
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Patent number: 7763125Abstract: The present invention relates to novel non-ferromagnetic amorphous steel alloys represented by the general formula: Fe—Mn-(Q)-B-M, wherein Q represents one or more elements selected from the group consisting of Sc, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and M represents one or more elements selected from the group consisting of Cr, Co, Mo, C and Si. Typically the atomic percentage of the Q constituent is 10 or less. An aspect is to utilize these amorphous steels as coatings, rather than strictly bulk structural applications. In this fashion any structural metal alloy can be coated by various technologies by these alloys for protection from the environment. The resultant structures can utilize surface and bulk properties of the amorphous alloy.Type: GrantFiled: December 21, 2005Date of Patent: July 27, 2010Assignee: University of Virginia Patent FoundationInventors: Gary J. Shiflet, S. Joseph Poon, Xiaofeng Gu
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Patent number: 7517415Abstract: The present invention relates to novel non-ferromagnetic amorphous steel alloys represented by the general formula: Fe—Mn-(Q)-B-M, wherein Q represents one or more elements selected from the group consisting of Sc, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and M represents one or more elements selected from the group consisting of Cr, Co, Mo, C and Si. Typically the atomic percentage of the Q constituent is 10 or less. FIG. 2B represents a differential thermal analysis plot for several exemplary alloys according to the invention.Type: GrantFiled: May 25, 2004Date of Patent: April 14, 2009Assignee: University of Virginia Patent FoundationInventors: S. Joseph Poon, Vijayabarathi Ponnambalam, Gary J. Shiflet
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Patent number: 7517416Abstract: Iron based amorphous steel alloy having a high Manganese content and being non-ferromagnetic at ambient temperature. The bulk-solidifying ferrous-based amorphous alloys are multicomponent systems that contain about 50 atomic percent iron as the major component. The remaining composition combines suitable mixtures of metalloids (Group b elements) and other elements selected mainly from manganese, chromium, and refractory metals. Various classes of non-ferromagnetic ferrous-based bulk amorphous metal alloys are obtained. One class is a high-manganese class that contains manganese and boron as the principal alloying components. Another class is a high manganese-high molybdenum class that contains manganese, molybdenum, and carbon as the principal alloying components. These bulk-solidifying amorphous alloys can be obtained in various forms and shape for various applications and utlizations. The good processability of these alloys can be attributed to the high reduced glass temperature Trg (e.g., about 0.6 to 0.Type: GrantFiled: June 2, 2006Date of Patent: April 14, 2009Assignee: University of Virginia Patent FoundationInventors: S. Joseph Poon, Gary J. Shiflet, Vijayabarathi Ponnambalam
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Publication number: 20090025834Abstract: Amorphous steel composites with enhanced mechanical properties and related methods for toughening amorphous steel alloys. The composites are formed from monolithic amorphous steel and hard ceramic particulates, which must be embedded in the glass matrix through melting at a temperature above the melting point for the steel but below the melting point for the ceramic. The ceramics may be carbides, nitrides, borides, iron-refractory carbides, or iron-refractory borides. An optical micrograph of such a composite including niobium carbide particulates is shown in FIG. 2A. The produced composites may be one of two types, primarily distinguished by the methods for embedding the ceramic particulates in the steel. These methods may be applied to a variety of amorphous steels as well as other non-ferrous amorphous metals, and the resulting composites can be used in various applications and utilizations.Type: ApplicationFiled: February 23, 2006Publication date: January 29, 2009Inventors: S. Joseph Poon, Gary J. Shiflet, Xiao-Jun Gu
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Publication number: 20080202649Abstract: Composite phase structure of early transition metal-based metallic alloys, including those of crystalline, quasicrystalline and amorphous phases, can be obtained in a controllable way upon direct (in-situ) cooling (solidification) of the alloy, realized either by adjusting the alloy compositions at a fixed cooling rate or by changing the cooling rates for a given alloy composition. Some embodiments are based on the addition of later transition metals, mainly of Cu with Ni or Fe with Co in early transition metal based (mainly Ti and Zr or Hf and Nb) metallic alloys. If cooling rate is on the scale of 103° C./s, a wholly amorphous structure is obtained for most of the compositions. At reduced cooling rates, composite structures with different kinds of phases can be achieved, as illustrated graphically in FIG. 1. Nickel addition promotes the formation of quasicrystalline phases, especially for Ti-rich alloy compositions with beryllium.Type: ApplicationFiled: June 13, 2006Publication date: August 28, 2008Inventors: Faqiang Guo, S. Joseph Poon, Gary J. Shiflet
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Publication number: 20070137737Abstract: The present invention relates to novel calcium based amorphous alloys with high thermal stability and low mass density represented by the general formula: CaAlQ, wherein Q represents one or more elements selected from the group consisting of Cu, Ag, Zn and Mg. Typically, the atomic percentage of the calcium is about 50%.Type: ApplicationFiled: May 27, 2004Publication date: June 21, 2007Inventors: Faqiang Guo, S. Joseph Poon, Gary Shiflet
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Patent number: 7067020Abstract: Iron based amorphous steel alloy having a high Manganese content and being non-ferromagnetic at ambient temperature. The bulk-solidifying ferrous-based amorphous alloys are multicomponent systems that contain about 50 atomic percent iron as the major component. The remaining composition combines suitable mixtures of metalloids (Group b elements) and other elements selected mainly from manganese, chromium, and refractory metals. Various classes of non-ferromagnetic ferrous-based bulk amorphous metal alloys are obtained. One class is a high-manganese class that contains manganese and boron as the principal alloying components. Another class is a high manganese-high molybdenum class that contains manganese, molybdenum, and carbon as the principal alloying components. These bulk-solidifying amorphous alloys can be obtained in various forms and shape for various applications and utlizations. The good processability of these alloys can be attributed to the high reduced glass temperature Trg (e.g., about 0.6 to 0.Type: GrantFiled: February 11, 2003Date of Patent: June 27, 2006Assignee: University of Virginia Patent FoundationInventors: S. Joseph Poon, Gary J. Shiflet, Vijayabarathi Ponnambalam
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Publication number: 20030164209Abstract: Iron based amorphous steel alloy having a high Manganese content and being non-ferromagnetic at ambient temperature. The bulk-solidifying ferrous-based amorphous alloys are multicomponent systems that contain about 50atomic percent iron as the major component. The remaining composition combines suitable mixtures of metalloids (Group b elements) and other elements selected mainly from manganese, chromium, and refractory metals. Various classes of non-ferromagnetic ferrous-based bulk amorphous metal alloys are obtained. One class is a high-manganese class that contains manganese and boron as the principal alloying components. Another class is a high manganese-high molybdenum class that contains manganese, molybdenum, and carbon as the principal alloying components. These bulk-solidifying amorphous alloys can be obtained in various forms and shape for various applications and utlizations. The good processability of these alloys can be attributed to the high reduced glass temperature Trg (e.g., about 0.6 to 0.Type: ApplicationFiled: February 11, 2003Publication date: September 4, 2003Inventors: S. Joseph Poon, Gary J. Shiflet, Vijayabarathi Ponnambalam
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Patent number: 5626691Abstract: Bulk nanocrystalline Ti-based alloys were produced by conventional cooling from the corresponding liquid or high temperature solid phase followed by annealing at an appropriate temperature for a certain amount of time. The titanium-based alloys have a composition represented by the following formula, Ti.sub.a Cr.sub.b Cu.sub.c M.sub.d whereinM is at least one metal element selected from the group consisting of Mn, Mo, Fe.a, b, c, and d are atomic percentages falling within the following ranges:60<a<90, 2<b<20, 2<c<25, and 1<d<15.Generally, the titanium-based alloys are in a nanocrystalline state, sometimes coexisting with an amorphous phase. These titanium-based alloys are economically produced, free of porosity and high strength (twice as that of commercial alloys) with good ductility. Furthermore, these bulk nanocrystalline alloys can be made in large-sized ingots, thermally recycled and have good processability. These properties make these alloys suitable for various applications.Type: GrantFiled: September 11, 1995Date of Patent: May 6, 1997Assignee: The University of Virginia Patent FoundationInventors: Dongjian Li, Joseph Poon, Gary J. Shiflet
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Patent number: 4964927Abstract: Ductile, strong, and stable (crystallization temperature above 250.degree. C.) Al-X-Z metallic classes contain 90 at. % Al where X-Fe, Co, Ni, Rh; Z-rare earths, Hf, Y, Stable (crystallization temperatures reaching 500.degree. C.) Al-Y-Fe-Si glasses have superior hardness properties upon consolidation. The present alloys are at least twice as strong in tensile strength as the strongest commercial aluminum alloys.Type: GrantFiled: March 31, 1989Date of Patent: October 23, 1990Assignee: University of Virginia Alumini PatentsInventors: Gary J. Shiflet, S. Joseph Poon, Yi He
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Patent number: RE47863Abstract: The present invention relates to novel non-ferromagnetic amorphous steel alloys represented by the general formula: Fe—Mn-(Q)-B-M, wherein Q represents one or more elements selected from the group consisting of Sc, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and M represents one or more elements selected from the group consisting of Cr, Co, Mo, C and Si. Typically the atomic percentage of the Q constituent is 10 or less. An aspect is to utilize these amorphous steels as coatings, rather than strictly bulk structural applications. In this fashion any structural metal alloy can be coated by various technologies by these alloys for protection from the environment. The resultant structures can utilize surface and bulk properties of the amorphous alloy.Type: GrantFiled: July 27, 2012Date of Patent: February 18, 2020Assignee: University of Virginia Patent FoundationInventors: Gary J. Shiflet, S. Joseph Poon, Xiaofeng Gu