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).

  • Publication number: 20230041431
    Abstract: 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: Application
    Filed: July 20, 2021
    Publication date: February 9, 2023
    Applicant: University of Virginia Patent Foundation
    Inventors: Joseph Poon, Jie Qi
  • Patent number: 9555467
    Abstract: 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: Grant
    Filed: May 18, 2015
    Date of Patent: January 31, 2017
    Assignee: University of Virginia Patent Foundation
    Inventors: S. Joseph Poon, Gary J. Shiflet, Xiao-Jun Gu
  • Publication number: 20160031002
    Abstract: 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: Application
    Filed: May 18, 2015
    Publication date: February 4, 2016
    Applicant: University of Virginia Patent Foundation
    Inventors: S. Joseph Poon, Gary J. Shiflet, Xiao-Jun Gu
  • Patent number: 9051630
    Abstract: 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: Grant
    Filed: February 23, 2006
    Date of Patent: June 9, 2015
    Assignee: University of Virginia Patent Foundation
    Inventors: S. Joseph Poon, Gary J. Shiflet, Xiao-Jun Gu
  • Patent number: 8313588
    Abstract: 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: Grant
    Filed: October 30, 2009
    Date of Patent: November 20, 2012
    Assignee: General Electric Company
    Inventors: Luana Emiliana Iorio, Francis Johnson, Pazhayannur Ramanathan Subramanian, Gary Shiflet, Joseph Poon, Sriparna Bhattacharya
  • Publication number: 20120067468
    Abstract: 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: Application
    Filed: October 30, 2009
    Publication date: March 22, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Luana Emiliana Iorio, Francis Johnson, Pazhayannur Ramanathan Subramanian, Gary Shiflet, Joseph Poon, Sriparna Bhattacharya
  • Publication number: 20110000585
    Abstract: 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: Application
    Filed: November 6, 2008
    Publication date: January 6, 2011
    Inventors: S. Joseph Poon, Vijayabarathi Ponnambalam, Gary J. Shiflet
  • Patent number: 7763125
    Abstract: 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: Grant
    Filed: December 21, 2005
    Date of Patent: July 27, 2010
    Assignee: University of Virginia Patent Foundation
    Inventors: Gary J. Shiflet, S. Joseph Poon, Xiaofeng Gu
  • Patent number: 7517415
    Abstract: 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: Grant
    Filed: May 25, 2004
    Date of Patent: April 14, 2009
    Assignee: University of Virginia Patent Foundation
    Inventors: S. Joseph Poon, Vijayabarathi Ponnambalam, Gary J. Shiflet
  • Patent number: 7517416
    Abstract: 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: Grant
    Filed: June 2, 2006
    Date of Patent: April 14, 2009
    Assignee: University of Virginia Patent Foundation
    Inventors: S. Joseph Poon, Gary J. Shiflet, Vijayabarathi Ponnambalam
  • Publication number: 20090025834
    Abstract: 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: Application
    Filed: February 23, 2006
    Publication date: January 29, 2009
    Inventors: S. Joseph Poon, Gary J. Shiflet, Xiao-Jun Gu
  • Publication number: 20080202649
    Abstract: 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: Application
    Filed: June 13, 2006
    Publication date: August 28, 2008
    Inventors: Faqiang Guo, S. Joseph Poon, Gary J. Shiflet
  • Publication number: 20070137737
    Abstract: 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: Application
    Filed: May 27, 2004
    Publication date: June 21, 2007
    Inventors: Faqiang Guo, S. Joseph Poon, Gary Shiflet
  • Patent number: 7067020
    Abstract: 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: Grant
    Filed: February 11, 2003
    Date of Patent: June 27, 2006
    Assignee: University of Virginia Patent Foundation
    Inventors: S. Joseph Poon, Gary J. Shiflet, Vijayabarathi Ponnambalam
  • Publication number: 20030164209
    Abstract: 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: Application
    Filed: February 11, 2003
    Publication date: September 4, 2003
    Inventors: S. Joseph Poon, Gary J. Shiflet, Vijayabarathi Ponnambalam
  • Patent number: 5626691
    Abstract: 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: Grant
    Filed: September 11, 1995
    Date of Patent: May 6, 1997
    Assignee: The University of Virginia Patent Foundation
    Inventors: Dongjian Li, Joseph Poon, Gary J. Shiflet
  • Patent number: 4964927
    Abstract: 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: Grant
    Filed: March 31, 1989
    Date of Patent: October 23, 1990
    Assignee: University of Virginia Alumini Patents
    Inventors: Gary J. Shiflet, S. Joseph Poon, Yi He
  • Patent number: RE47863
    Abstract: 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: Grant
    Filed: July 27, 2012
    Date of Patent: February 18, 2020
    Assignee: University of Virginia Patent Foundation
    Inventors: Gary J. Shiflet, S. Joseph Poon, Xiaofeng Gu