Patents by Inventor Larry E. McCandlish

Larry E. McCandlish 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: 20190300433
    Abstract: The invention provides novel articles of composite materials having hollow interior channels or passageways, or otherwise being hollowed out, and formulations and methods for their manufacture and uses. These hollow core objects are suitable for a variety of applications in construction, pavements and landscaping, and infrastructure.
    Type: Application
    Filed: April 8, 2019
    Publication date: October 3, 2019
    Inventors: Larry E. McCandlish, Orlando Narine, Daniel Castoro, Vahit Atakan, Devin Patten, John P. Kuppler, Sean Camron Quinn
  • Publication number: 20180155248
    Abstract: The invention provides novel articles of composite materials having hollow interior channels or passageways, or otherwise being hollowed out, and formulations and methods for their manufacture and uses. These hollow core objects are suitable for a variety of applications in construction, pavements and landscaping, and infrastructure.
    Type: Application
    Filed: December 4, 2017
    Publication date: June 7, 2018
    Inventors: Larry E. McCandlish, Orlando Narine, Daniel Castoro, Vahit Atakan, Devin Patten, John P. Kuppler, Sean Camron Quinn
  • Patent number: 9878951
    Abstract: The invention provides novel articles of composite materials having hollow interior channels or passageways, or otherwise being hollowed out, and formulations and methods for their manufacture and uses. These hollow core objects are suitable for a variety of applications in construction, pavements and landscaping, and infrastructure.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: January 30, 2018
    Assignee: Solidia Technologies, Inc.
    Inventors: Larry E. McCandlish, Orlando Narine, Daniel Castoro, Vahit Atakan, Devin Patten, John P. Kuppler
  • Publication number: 20160355439
    Abstract: The invention provides novel articles of composite materials having hollow interior channels or passageways, or otherwise being hollowed out, and formulations and methods for their manufacture and uses. These hollow core objects are suitable for a variety of applications in construction, pavements and landscaping, and infrastructure.
    Type: Application
    Filed: October 3, 2014
    Publication date: December 8, 2016
    Inventors: Larry E. McCandlish, Orlando Narine, Daniel Castro, David Patten, John P. Kuppler
  • Publication number: 20150225295
    Abstract: Apparatus and methods for curing composite compositions that react with CO2. The apparatus in general includes an easily transportable and easily assembled curing structure, such as a plastic sheet housing supported by gas pressure and/or by mechanical supports. Apparatus for providing reagent CO2, for measuring water content and for removing water, and for controlling temperature, flow rates and flow directions through the curing structure. Examples of curing procedures and examples of cured materials in desired shapes are described.
    Type: Application
    Filed: January 22, 2015
    Publication date: August 13, 2015
    Inventors: Larry E. McCandlish, Orlando Narine, Daniel Castoro
  • Patent number: 7022303
    Abstract: Polycrystalline materials of macroscopic size exhibiting Single-Crystal-Like properties are formed from a plurality of Single-Crystal Particles, having Self-Aligning morphologies and optionally ling morphology, bonded together and aligned along at least one, and up to three, crystallographic directions.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: April 4, 2006
    Assignee: Rutgers, The State University
    Inventors: Richard E. Riman, Larry E. McCandlish
  • Publication number: 20030211369
    Abstract: Polycrystalline materials of macroscopic size exhibiting Single-Crystal-Like properties are formed from a plurality of Single-Crystal Particles, having Self-Aligning morphologies and optionally ling morphology, bonded together and aligned along at least one, and up to three, crystallographic directions.
    Type: Application
    Filed: May 13, 2002
    Publication date: November 13, 2003
    Inventors: Richard E. Riman, Larry E. McCandlish
  • Patent number: 6214079
    Abstract: A method for fabricating a triphasic composite such as a WC/Co/diamond composite with a high volume fraction of diamond in a WC/Co matrix. The method involves sintering of a WC/Co powder compact to develop a porous preform, which displays some rigidity and strength, infiltrating the porous preform with a controlled distribution of carbon, and high pressure/high temperature treatment of the carbon-containing WC/Co preform to transform the carbon to diamond. The distribution of diamond in the composite can be functionally graded to provide a WC/Co core and a diamond-enriched surface, wherein all three phases form an interconnected structure in three dimensions. Such a tricontinuous structure combines high strength and toughness with superior wear resistance, making it attractive for applications in machine tools and drill bits.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: April 10, 2001
    Assignee: Rutgers, The State University
    Inventors: Bernard H. Kear, Rajendra K. Sadangi, Larry E. McCandlish, Oleg Voronov
  • Patent number: 6090343
    Abstract: A method for fabricating a triphasic composite such as a WC/Co/diamond composite with a high volume fraction of diamond in a WC/Co matrix. The method involves sintering of a WC/Co powder compact to develop a porous preform, which displays some rigidity and strength, infiltrating the porous preform with a controlled distribution of carbon, and high pressure/high temperature treatment of the carbon-containing WC/Co preform to transform the carbon to diamond. The distribution of diamond in the composite can be functionally graded to provide a WC/Co core and a diamond-enriched surface, wherein all three phases form an interconnected structure in three dimensions. Such a tricontinuous structure combines high strength and toughness with superior wear resistance, making it attractive for applications in machine tools and drill bits.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: July 18, 2000
    Assignee: Rutgers University
    Inventors: Bernard H. Kear, Rajendra K. Sadangi, Larry E. McCandlish, Oleg Voronov
  • Patent number: 5841045
    Abstract: A low melting point alloy is used to sinter metal carbide particles. The alloy is a eutectic-like alloy formed from a binding metal such as iron, cobalt or nickel, in combination with vanadium and chromium. The alloy is preferably formed by forming two separate alloys and blending these together. The first alloy is formed by spray drying together a solution of a binding metal salt such as a cobalt salt with a solution of a chromium salt. The formed particles are then carburized to form a cobalt-chromium-carbon alloy. A separate vanadium alloy is formed in the same manner. The two are combined to establish the amount of chromium and vanadium desired, and this, in turn, is used to sinter metal carbide parts. This permits sintering of the metal carbide parts at temperatures less than 1250.degree. C. and in turn significantly inhibits grain grown without a significant decrease in toughness. It is particularly adapted to form carbide products wherein the carbide grain size is as low as 120 nanometers.
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: November 24, 1998
    Assignees: Nanodyne Incorporated, Rutgers University
    Inventors: Larry E. McCandlish, Rajendra K. Sadangi
  • Patent number: 5776264
    Abstract: Amorphous tungsten, cobalt, nickel, molybdenum, iron and alloys thereof can be formed by reducing metal-containing compositions to form the elemental metal wherein the particle size of the elemental metal is less than about 80 microns. This is oxidized in an oxygen-starved environment containing less than 3% oxygen and an inert gas to slowly oxidize the elemental metal. By oxidizing the metal under these conditions, the normal exotherm occurring during oxidation is avoided. The slow oxidation of the metal continues forming an amorphous metal oxide. The amorphous metal oxide can then be reacted in a reducing environment such as hydrogen to form the amorphous elemental metal. This amorphous elemental metal can then be reacted with a carburizing gas to form the carbide or ammonia gas to form the nitride or hexamethylsilane to form the silicide. This permits gas/solid reactions. The amorphous metal can also be used in a variety of different applications.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: July 7, 1998
    Assignee: Rutgers University
    Inventors: Larry E. McCandlish, Bernard Kear, Nicos C. Angastiniotis
  • Patent number: 5666631
    Abstract: A compacted, single phase or multiphase composite article. Particles for use in the compacted article are produced by providing a precursor compound containing at least one or at least two metals and a coordinating ligand. The compound is heated to remove the coordinating ligand therefrom and increase the surface area thereof. It may then be reacted so that at least one metal forms a metal-containing compound. The particles may be consolidated to form a compacted article, and for this purpose may be used in combination with graphite or diamonds. The metal-containing compound may be a nonmetallic compound including carbides, nitrides and carbonitrides of a refractory metal, such as tungsten. The metal-containing compound may be dispersed in a metal matrix, such as iron, nickel or cobalt. The dispersed nonmetallic compound particles are no larger than about 0.1 micron in particle size and have a volume fraction greater than about 0.15 within the metal matrix.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: September 9, 1997
    Assignee: Exxon Research & Engineering Company
    Inventors: Richard S. Polizzotti, Larry E. McCandlish, Edwin L. Kugler
  • Patent number: 5651808
    Abstract: A new carbothermic reaction process is described for the thermochemical processing of nanophase WC-Co powders. The process permits shorter reaction times, reduced temperatures, and finer microstructures compared to conventional processing methods.The process builds on our experience with spray conversion processing [1], but involves 1) chemical vapor infiltration reaction of the carbon infiltrant and particle substrate to from WC-CO; and 2) removal of any excess (unreacted) carbon by controlled gasification. A feature of the carbothermic reaction process is its adaptability to conventional WC-Co processing technology, as well as to spray conversion processing technology.The resulting power particles consist of a network of fine grains, (less than 100 nm) of WC and Co with interconnected fine porosity. Powder particles suitable for subsequent handling and consolidation are readily produced with diameters greater than 10 microns.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: July 29, 1997
    Assignee: Rutgers, The State University Of New Jersey
    Inventors: Larry E. McCandlish, Bernard H. Kear, Byoung-Kee Kim
  • Patent number: 5490968
    Abstract: A compacted, single phase or multiphase composite article. Particles for use in the compacted article are produced by providing a precursor compound containing at least one or at least two metals and a coordinating ligand. The compound is heated to remove the coordinating ligand therefrom and increase the surface area thereof. It may then be reacted so that at least one metal forms a metal-containing compound. The particles may be consolidated to form a compacted article, and for this purpose may be used in combination with graphite or diamonds. The metal-containing compound may be a nonmetallic compound including carbides, nitrides and carbonitrides of a refractory metal, such as tungsten. The metal-containing compound may be dispersed in a metal matrix, such as iron, nickel or cobalt. The dispersed nonmetallic compound particles are no larger than about 0.1 micron in particle size and have a volume fraction greater than about 0.15 within the metal matrix.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: February 13, 1996
    Assignee: Exxon Research and Engineering Company
    Inventors: Richard S. Polizzotti, Larry E. McCandlish, Edwin L. Kugler
  • Patent number: 5441553
    Abstract: A compacted, single phase or multiphase composite article. Particles for use in the compacted article are produced by providing a precursor compound containing at least one or at least two metals and a coordinating ligand. The compound is heated to remove the coordinating ligand therefrom and increase the surface area thereof. It may then be reacted so that at least one metal forms a metal-containing compound. The particles may be consolidated to form a compacted article, and for this purpose may be used in combination with graphite or diamonds. The metal-containing compound may be a nonmetallic compound including carbides, nitrides and carbonitrides of a refractory metal, such as tungsten. The metal-containing compound may be dispersed in a metal matrix, such as iron, nickel or cobalt. The dispersed nonmetallic compound particles are no larger than about 0.1 micron in particle size and have a volume fraction greater than about 0.15 within the metal matrix.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: August 15, 1995
    Assignee: Exxon Research and Engineering Company
    Inventors: Richard S. Polizzotti, Larry E. McCandlish, Edwin L. Kugler
  • Patent number: 5352269
    Abstract: A process is described for the production of composite powders with ultrafine microstructures. The process involves three coordinated steps:1) preparation and mixing of an appropriate starting solution;2) spray drying to form a chemically homogeneous precursor powder; and3) fluid bed thermochemical conversion of the precursor into the desired nanophase composite powder.Both spray drying and fluid bed conversion are scaleable technologies, and together provide the means for producing bulk quantities of nanophase composite powders at low manufacturing cost. Processing parameters are controlled to ensure maintenance of chemical and microstructural uniformity at the nanoscale (less than 0.1 micron) level.Spray conversion processing is a versatile technology, which can be applied to a variety of metal--metal (e.g. W--Cu), ceramic-metal (e.g. WC--Co), and ceramic--ceramic (e.g. Al.sub.2 O.sub.3 --SiO.sub.2) nanophase composite powders ceramic-metal (e.g. WC--Co), and ceramic--ceramic (e.g. Al.sub.2 O.sub.3 --SiO.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: October 4, 1994
    Inventors: Larry E. McCandlish, Bernard H. Kear, Swarn J. Bhatia
  • Patent number: 5338330
    Abstract: A compacted, single phase or multiphase composite article. Particles for use in the compacted article are produced by providing a precursor compound containing at least one or at least two metals and a coordinating ligand. The compound is heated to remove the coordinating ligand therefrom and increase the surface area thereof. It may then be reacted so that at least one metal forms a metal-containing compound. The particles may be consolidated to form a compacted article, and for this purpose may be used in combination with graphite or diamonds. The metal-containing compound may be a nonmetallic compound including carbides, nitrides and carbonitrides of a refractory metal, such as tungsten. The metal-containing compound may be dispersed in a metal matrix, such as iron, nickel or cobalt. The dispersed nonmetallic compound particles are no larger than about 0.1 micron in particle size and have a volume fraction greater than about 0.15 within the metal matrix.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: August 16, 1994
    Assignee: Exxon Research & Engineering Company
    Inventors: Richard S. Polizzotti, Larry E. McCandlish, Edwin L. Kugler
  • Patent number: 5230729
    Abstract: A new carbothermic reaction process is described for the thermochemical processing of nanophase WC-Co powders. The process permits shorter reaction times, reduced temperatures, and finer microstructures compared to conventional processing methods.The process builds on our experience with spray conversion processing but involves 1) chemical vapor infiltration reaction of the carbon infiltrant using a carbon source gas at a carbon activity greater than or equal to 1.0 with the particle substrate to form WC-CO; and 2) removal of any excess (unreacted) carbon by controlled gasification using a gas with carbon activity less than 1.0. A feature of the carbothermic reaction process is its adaptability to conventional WC-Co processing technology, as well as to spray conversion processing technology.The resulting power particles consist of a network of fine grains, (less than 100 nm) of WC and Co with interconnected fine porosity.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: July 27, 1993
    Assignee: Rutgers, The State University of New Jersey
    Inventors: Larry E. McCandlish, Bernard H. Kear, Byoung-Kee Kim
  • Patent number: 5138111
    Abstract: An eta phase composition in powder form, prepared in the absence of sulfur or sulfur bearing compounds, having a surface area greater than about 2m.sup.2 /g and consisting of X.sub.6 Y.sub.6 Z.sub.a wherein X is at least one element selected from the group consiting of Mo and W, Y is at least one element selected from the group consisting of Fe, Co. Ni, Mo and W, Z is at least one element selected from the group consisting of C, N and combinations thereof such that when Z is N, a is greater than or equal to 1 but less than or equal to 2 and when Z is C, a is greater than 1 but less than or equal to 2 except when Z is C and Y is Fe, then a is greater than or equal to 1 but less than or equal to 2. The eta phase may be a carbide, nitride or carbonitride. A method for producing the eta-phase composition includes providing a precursor compound including at least two eta-phase forming metals, and a ligand containing carbon, nitrogen or combinations thereof.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: August 11, 1992
    Assignee: Exxon Research and Engineering Company
    Inventors: Edwin L. Kugler, Larry E. McCandlish, Allan J. Jacobson, Russell R. Chianelli
  • Patent number: 5071813
    Abstract: An eta phase composition in powder form, prepared in the absence of sulfur or sulfur bearing compounds, having a surface area greater than about 2m.sup.2 /g and consisting of X.sub.6 Y.sub.6 Z.sub.a wherein X is at least one element selected from the group consisting of Mo and W, Y is at least one element selected from the group consisting of Fe, Co, Ni, Mo and W, Z is at least one element selected from the group consisting of C, N and combinations thereof such that when Z is N, a is greater than or equal to 1 but less than or equal to 2 and when Z is C, a is greater than 1 but less than or equal to 2 except when Z is C and Y is Fe, then a is greater than or equal to 1 but less than or equal to 2. The eta phase may be a carbide, nitride or carbonitride. A method for producing the eta-phase composition includes providing a precursor compound including at least two eta-phase forming metals, and a ligand containing carbon, nitrogen or combinations thereof.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: December 10, 1991
    Assignee: Exxon Research & Engineering Company
    Inventors: Edwin L. Kugler, Larry E. McCandlish, Allan J. Jacobson, Russell R. Chianelli