Patents by Inventor Anthony Griffo

Anthony Griffo 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).

  • Patent number: 10350731
    Abstract: Thermally stable diamond constructions comprise a diamond body having a plurality of bonded diamond crystals, a plurality of interstitial regions disposed among the crystals, and a substrate attached to the body. The body includes a working surface and a side surface extending away from the working surface to the substrate. The body comprises a first region adjacent the side surface that is substantially free of a catalyst material and that extends a partial depth into the diamond body. The first region can further extend to at least a portion of the working surface and a partial depth therefrom into the diamond body. The diamond body can be formed from natural diamond grains and/or a mixture of natural and synthetic diamond grains. A surface of the diamond body is treated to provide the first region, and before treatment is finished to an approximate final dimension.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: July 16, 2019
    Assignee: Smith International, Inc.
    Inventors: Ronald K. Eyre, Anthony Griffo, Thomas W. Oldham
  • Publication number: 20190128072
    Abstract: A downhole cutting tool includes a tool body with a cutting element or cutting element pocket thereon. At least a portion of the tool body or an attachment thereto is a metal matrix composite formed from metal carbide particles dispersed in a continuous metal matrix. The metal carbide particles make up less than 45 wt % of the metal matrix composite and/or less than 30 vol % of the metal matrix composite. The continuous metal matrix may also be formed from a metal or metal alloy other than Ni—Si—B and/or have a transverse rupture strength greater than 150 ksi and a fracture toughness over 22 ksi*in0.5.
    Type: Application
    Filed: October 31, 2018
    Publication date: May 2, 2019
    Inventors: Anthony Griffo, Madapusi K. Keshavan, Youhe Zhang
  • Patent number: 10132121
    Abstract: A method for making a polycrystalline diamond construction is disclosed, which includes the steps of treating a polycrystalline diamond body having a plurality of bonded together diamond crystals and a solvent catalyst material to remove the solvent catalyst material therefrom, wherein the solvent catalyst material is disposed within interstitial regions between the bonded together diamond crystals, replacing the removed solvent catalyst material with a replacement material, and treating the body having the replacement material to remove substantially all of the replacement material from a first region of the body extending a depth from a body surface, and allowing the remaining amount of the replacement material to reside in a second region of the body that is remote from the surface.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: November 20, 2018
    Assignee: SMITH INTERNATIONAL, INC.
    Inventors: Madapusi K. Keshavan, Ronald K. Eyre, Anthony Griffo, Peter Thomas Cariveau
  • Patent number: 10124468
    Abstract: Polycrystalline diamond constructions include a diamond body comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions with a catalyst material. The sintered body is treated remove the catalyst material disposed within interstitial regions, rendering it substantially free of the catalyst material used to initially sinter the body. Accelerating techniques can be used to remove the catalyst material. The body includes an infiltrant material disposed within interstitial regions in a first region of the construction. The body includes a second region adjacent the working surface and that is substantially free of the infiltrant material. The infiltrant material can be a Group VIII material not used to initially sinter the diamond body. A metallic substrate is attached to the diamond body, and can be the same or different from a substrate used as a source of the catalyst material used to initially sinter the diamond body.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: November 13, 2018
    Assignee: SMITH INTERNATIONAL, INC.
    Inventors: Madapusi K. Keshavan, Anthony Griffo, Yuelin Shen, Youhe Zhang
  • Patent number: 9776917
    Abstract: A cutting element includes a polycrystalline diamond layer having a cutting face and a diamond layer side surface, a substrate attached to the polycrystalline diamond layer, the substrate having a bottom surface and a substrate side surface, an interface between the diamond layer and the substrate, and a mask covering at least the bottom surface and the substrate side surface of the cutting element.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: October 3, 2017
    Assignee: SMITH INTERNATIONAL, INC.
    Inventors: Ted Tessitore, Anthony Griffo, Yuelin Shen, Youhe Zhang, Madapusi K. Keshavan
  • Patent number: 9387571
    Abstract: A method of forming a thermally stable cutting element that includes disposing at least a portion of a polycrystalline abrasive body containing a catalyzing material to be leached into a leaching agent; and subjecting the polycrystalline abrasive object to an elevated temperature and pressure is disclosed. Thermally stable cutting elements and systems and other methods for forming thermally stable cutting elements are also disclosed.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: July 12, 2016
    Assignee: Smith International, Inc.
    Inventors: Anthony Griffo, Madapusi K. Keshavan
  • Publication number: 20150354284
    Abstract: A tool including a body defining a pocket, a cutting element in the pocket, at least one projection between an outside surface of the cutting element and an inside surface of the pocket, and a braze material between the cutting element and the pocket fixing the cutting element to the pocket.
    Type: Application
    Filed: June 3, 2015
    Publication date: December 10, 2015
    Inventors: Anthony Griffo, Alysia C. White, Sameer R. Kachhia, Youhe Zhang
  • Publication number: 20150321952
    Abstract: A cutting element includes a polycrystalline diamond layer having a cutting face and a diamond layer side surface, a substrate attached to the polycrystalline diamond layer, the substrate having a bottom surface and a substrate side surface, an interface between the diamond layer and the substrate, and a mask covering at least the bottom surface and the substrate side surface of the cutting element.
    Type: Application
    Filed: July 17, 2015
    Publication date: November 12, 2015
    Inventors: Ted Tessitore, Anthony Griffo, Yuelin Shen, Youhe Zhang, Madapusi K. Keshavan
  • Patent number: 8956438
    Abstract: A cutting element for engaging earthern formations having a wear surface formed from a low coefficient of thermal expansion (CTE) composition including a polycrystalline diamond or polycrystalline cubic boron nitride hard phase material and a ductile phase low CTE material formed from an alloy made of Co, Ni, Fe, C, and Mn. The hard phase material is bonded to one another by the ductile phase material to form the low CTE composition.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: February 17, 2015
    Assignee: Smith International, Inc.
    Inventors: Zhigang Fang, Anthony Griffo, Gregory T. Lockwood, Dah-Ben Liang
  • Publication number: 20150021101
    Abstract: PCD materials comprise a diamond body having bonded diamond crystals and interstitial regions disposed among the crystals. The diamond body is formed from diamond grains and a catalyst material at high pressure/high temperature conditions. The diamond grains have an average particle size of about 0.03 mm or greater. At least a portion of the diamond body has a high diamond volume content of greater than about 93 percent by volume. The entire diamond body can comprise high volume content diamond or a region of the diamond body can comprise the high volume content diamond. The diamond body includes a working surface, a first region substantially free of the catalyst material, and a second region that includes the catalyst material. At least a portion of the first region extends from the working surface to depth of from about 0.01 to about 0.1 mm.
    Type: Application
    Filed: October 6, 2014
    Publication date: January 22, 2015
    Inventors: Madapusi K. Keshavan, Youhe Zhang, Yuelin Shen, Anthony Griffo, Michael Janssen
  • Publication number: 20150014067
    Abstract: A method of forming a thermally stable cutting element may include providing a cutting element including a substrate fixed to a polycrystalline diamond cutting table; enclosing the substrate and at least a portion of the polycrystalline diamond cutting table within a protective element to form a partially enclosed cutting element; exerting a compressive squeeze on the cutting element of about 5-25%; and exposing the partially enclosed cutting element to a leaching solution so that at least part of an unenclosed portion of the polycrystalline diamond table is in contact with the leaching solution.
    Type: Application
    Filed: July 11, 2014
    Publication date: January 15, 2015
    Inventors: Giuseppe Muzzi, Alysia C. White, Anthony Griffo, James Ray Podesta
  • Publication number: 20140374156
    Abstract: A method for reducing stress in a downhole tool. The method includes varying a temperature of the downhole tool by at least 5° C. Vibrational energy may be transferred to the downhole tool with a vibration device coupled to the downhole tool. The vibrational energy may cause the downhole tool to move with a frequency from about 10 Hz to about 5 kHz.
    Type: Application
    Filed: June 18, 2014
    Publication date: December 25, 2014
    Inventors: Anthony Griffo, Ting Ren, Cary A. Roth
  • Patent number: 8893828
    Abstract: A drill bit may include a bit body having a plurality of blades extending radially therefrom and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades. The bit body has a continuous infiltration binder and a plurality of carbide particles dispersed in the continuous infiltration binder, wherein at least a portion of the plurality of carbide particles and at least a portion of the continuous infiltration binder form a first carbide matrix region, and wherein the plurality of carbide particles forming the first carbide matrix region have an average grain sizes of less than about 44 microns.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: November 25, 2014
    Assignee: Smith International, Inc.
    Inventors: Gregory T. Lockwood, Madapusi K. Keshavan, Anthony Griffo
  • Patent number: 8881851
    Abstract: Thermally-stable polycrystalline diamond materials comprise a first phase including a plurality of bonded together diamond crystals, and a second phase including a reaction product formed between a binder/catalyst material and a material reactive with the binder/catalyst material. The reaction product is disposed within interstitial regions of the polycrystalline diamond material that exists between the bonded diamond crystals. The first and second phases are formed during a single high pressure/high temperature process condition. The reaction product has a coefficient of thermal expansion that is relatively closer to that of the bonded together diamond crystals than that of the binder/catalyst material.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: November 11, 2014
    Assignee: Smith International, Inc.
    Inventors: John Daniel Belnap, Stewart N. Middlemiss, Anthony Griffo, Thomas W. Oldham, Kumar T. Kembaiyan
  • Patent number: 8852546
    Abstract: PCD materials comprise a diamond body having bonded diamond crystals and interstitial regions disposed among the crystals. The diamond body is formed from diamond grains and a catalyst material at high pressure/high temperature conditions. The diamond grains have an average particle size of about 0.03 mm or greater. At least a portion of the diamond body has a high diamond volume content of greater than about 93 percent by volume. The entire diamond body can comprise high volume content diamond or a region of the diamond body can comprise the high volume content diamond. The diamond body includes a working surface, a first region substantially free of the catalyst material, and a second region that includes the catalyst material. At least a portion of the first region extends from the working surface to depth of from about 0.01 to about 0.1 mm.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: October 7, 2014
    Assignee: Smith International, Inc.
    Inventors: Madapusi K. Keshavan, Youhe Zhang, Yuelin Shen, Anthony Griffo, Michael Janssen
  • Publication number: 20140262542
    Abstract: Downhole tools include a component, at least a portion of which includes ternary boride cermet. A method of making a downhole tool including a ternary boride cermet includes obtaining a ternary boride cermet material and heating the ternary boride cermet material and a binder to form the downhole tool.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: MINGDONG CAI, GREGORY T. LOCKWOOD, XIN DENG, SIKE XIA, ANTHONY GRIFFO
  • Publication number: 20140182215
    Abstract: Thermally stable diamond constructions comprise a diamond body having a plurality of bonded diamond crystals, a plurality of interstitial regions disposed among the crystals, and a substrate attached to the body. The body includes a working surface and a side surface extending away from the working surface to the substrate. The body comprises a first region adjacent the side surface that is substantially free of a catalyst material and that extends a partial depth into the diamond body. The first region can further extend to at least a portion of the working surface and a partial depth therefrom into the diamond body. The diamond body can be formed from natural diamond grains and/or a mixture of natural and synthetic diamond grains. A surface of the diamond body is treated to provide the first region, and before treatment is finished to an approximate final dimension.
    Type: Application
    Filed: October 24, 2013
    Publication date: July 3, 2014
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Ronald K. Eyre, Anthony Griffo, Thomas W. Oldham
  • Publication number: 20140007512
    Abstract: A method for making a thermally stable cutting element may include forming an acid mixture containing two different acid species by combining an acid solution and at least one acid-forming compound, wherein the at least one acid-forming compound is provided in solid form, and wherein the at least one acid-forming compound produces an acid that is different than the acid solution; treating at least a portion of a sintered diamond body by placing the sintered diamond body in the acid mixture, wherein the sintered diamond body comprises: a matrix phase of bonded-together diamond grains; a plurality of interstitial regions dispersed within the matrix phase; and a metal material disposed within a plurality of the interstitial regions; wherein the treating removes the metal material from at least a portion of the plurality of interstitial regions; and removing the sintered diamond body from the acid mixture after a predetermined length of time, wherein at least a portion of the diamond body removed from the acid mi
    Type: Application
    Filed: September 13, 2013
    Publication date: January 9, 2014
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: J. Daniel Belnap, Anthony Griffo, Peter Thomas Cariveau, Loel Corbett, Yahua Bao, Gerald Demenna
  • Publication number: 20130283701
    Abstract: A method of forming a thermally stable cutting element that includes disposing at least a portion of a polycrystalline abrasive body containing a catalyzing material to be leached into a leaching agent; and subjecting the polycrystalline abrasive object to an elevated temperature and pressure is disclosed. Thermally stable cutting elements and systems and other methods for forming thermally stable cutting elements are also disclosed.
    Type: Application
    Filed: June 24, 2013
    Publication date: October 31, 2013
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Anthony Griffo, Madapusi K. Keshavan
  • Patent number: 8562703
    Abstract: Thermally stable diamond constructions comprise a diamond body having a plurality of bonded diamond crystals and a plurality of interstitial regions disposed among the crystals. A metallic substrate is attached to the diamond body. A working surface is positioned along an outside portion of the diamond body, and the diamond body comprises a first region that is substantially free of a catalyst material, and a second region that includes the catalyst material. The diamond body first region extends from the working surface to depth of at least about 0.02 mm to a depth of less than about 0.09 mm. The diamond body includes diamond crystals having an average diamond grain size of greater than about 0.02 mm, and comprises at least 85 percent by volume diamond based on the total volume of the diamond body.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: October 22, 2013
    Assignee: Smith International, Inc.
    Inventors: Ronald K. Eyre, Anthony Griffo, Thomas W. Oldham