Patents by Inventor Wanjun Cao

Wanjun Cao 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: 10619422
    Abstract: A cutting table comprises a polycrystalline hard material and at least one rhenium-containing structure within the polycrystalline hard material and comprising greater than or equal to about 10 weight percent rhenium. A cutting element, an earth-boring tool, and method of forming a cutting element are also described.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: April 14, 2020
    Assignee: Baker Hughes, A GE Company, LLC
    Inventors: Wanjun Cao, Xu Huang, Steven W. Webb
  • Patent number: 10584581
    Abstract: An instrumented cutting element, an earth-boring drilling tool, and related methods are disclosed. The instrumented cutting element may include a substrate base, a diamond table disposed on the substrate base, a sensor disposed within the diamond table, a lead wire coupled to the sensor and disposed within a side trench formed within the substrate base, and a filler material disposed within the side trench. The earth-boring drilling tool may include securing the instrumented cutting element to a blade of a bit body. A related method may include forming the instrumented cutting element and earth-boring drilling tool.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: March 10, 2020
    Assignee: Baker Hughes, a GE company, LLC
    Inventors: Wanjun Cao, Steven W. Webb, Juan Miguel Bilen, Bo Yu, Xu Huang
  • Patent number: 10577869
    Abstract: A cutting element comprises a supporting substrate, a cutting table comprising a hard material attached to the supporting substrate, and a fluid flow pathway extending through the supporting substrate and the cutting table. The fluid flow pathway is configured to direct fluid delivered to an outermost boundary of the supporting substrate through internal regions of the supporting substrate and the cutting table. A method of forming a cutting element and an earth-boring tool are also described.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: March 3, 2020
    Assignee: Baker Hughes, a GE company, LLC
    Inventors: Wanjun Cao, Xu Huang, Steven W. Webb, Bo Yu
  • Publication number: 20200011170
    Abstract: An instrumented cutting element, an earth-boring drilling tool, and related methods are disclosed. The instrumented cutting element may include a substrate base, a diamond table disposed on the substrate base, a sensor disposed within the diamond table, a lead wire coupled to the sensor and disposed within a side trench formed within the substrate base, and a filler material disposed within the side trench. The earth-boring drilling tool may include securing the instrumented cutting element to a blade of a bit body. A related method may include forming the instrumented cutting element and earth-boring drilling tool.
    Type: Application
    Filed: July 3, 2018
    Publication date: January 9, 2020
    Inventors: Wanjun Cao, Steven W. Webb, Juan Miguel Bilen, Bo Yu, Xu Huang
  • Publication number: 20200011171
    Abstract: An instrumented cutting element, an earth-boring drilling tool, and related methods are disclosed. The instrumented cutting element may include a substrate base, a diamond table disposed on the substrate base, a sensor disposed within the diamond table, a lead wire coupled to the sensor and disposed within a side trench formed within the substrate base, and a filler material disposed within the side trench. The earth-boring drilling tool may include securing the instrumented cutting element to a blade of a bit body. A related method may include forming the instrumented cutting element and earth-boring drilling tool.
    Type: Application
    Filed: July 3, 2018
    Publication date: January 9, 2020
    Inventors: Wanjun Cao, Steven W. Webb, Juan Miguel Bilen
  • Publication number: 20190368278
    Abstract: A cutting element comprises a supporting substrate, and a cutting table attached to an end of the supporting substrate. The cutting table comprises inter-bonded diamond particles, and a thermally stable material within interstitial spaces between the inter-bonded diamond particles. The thermally stable material comprises a carbide precipitate having the general chemical formula, A3XZn-1, where A comprises one or more of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ac, Th, Pa, and U; X comprises one or more of Al, Ga, Sn, Be, Bi, Te, Sb, Se, As, Ge, Si, B, and P; Z comprises C; and n is greater than or equal to 0 and less than or equal to 0.75. A method of forming a cutting element, an earth-boring tool, a supporting substrate, and a method of forming a supporting substrate are also described.
    Type: Application
    Filed: May 30, 2018
    Publication date: December 5, 2019
    Inventors: Wanjun Cao, Marc W. Bird
  • Patent number: 10487589
    Abstract: An earth-boring tool includes a bit body and an actuator coupled to the bit body. The actuator includes at least one shape memory material configured to transform from a first shape to a second shape to move a bearing pad or a cutting element with respect to the bit body in response to a stimulus. A transformation from the first shape to the second shape includes a phase change from a first solid phase to a second solid phase. A depth-of-cut limiter includes a bearing element and at least one shape memory material coupled to the bearing element. A method of forming or servicing a wellbore includes rotating an earth-boring tool within a wellbore, applying a stimulus to an actuator to convert at least one shape memory material from a first shape to a second shape, and continuing to rotate the earth-boring tool within the wellbore after applying the stimulus.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: November 26, 2019
    Assignee: Baker Hughes, a GE company, LLC
    Inventors: Bo Yu, Juan Miguel Bilen, John H. Stevens, Wanjun Cao
  • Publication number: 20180334859
    Abstract: A cutting element comprises a supporting substrate, a cutting table comprising a hard material attached to the supporting substrate, and a fluid flow pathway extending through the supporting substrate and the cutting table. The fluid flow pathway is configured to direct fluid delivered to an outermost boundary of the supporting substrate through internal regions of the supporting substrate and the cutting table. A method of forming a cutting element and an earth-boring tool are also described.
    Type: Application
    Filed: May 11, 2018
    Publication date: November 22, 2018
    Inventors: Wanjun Cao, Xu Huang, Steven W. Webb, Bo Yu
  • Publication number: 20180327888
    Abstract: A method of forming a supporting substrate for a cutting element comprises forming a precursor composition comprising discrete WC particles, a binding agent, and discrete particles comprising Co, one or more of Al, Be, Ga, Ge, Si, and Sn, and one or more of C and W. The precursor composition is subjected to a consolidation process to form a consolidated structure including WC particles dispersed in a homogenized binder comprising Co, W, C, and one or more of Al, Be, Ga, Ge, Si, and Sn. A method of forming a cutting element, a cutting element, a related structure, and an earth-boring tool are also described.
    Type: Application
    Filed: December 14, 2017
    Publication date: November 15, 2018
    Inventors: Wanjun Cao, Marc W. Bird
  • Patent number: 10121605
    Abstract: The present invention provides for two types of wide operating temperature range electrolyte formulations that contain methyl butyrate (MB) and additives have been investigated and compared in Lithium-ion capacitors (LICs), which were consisted of hard carbon (HC)/stabilized lithium metal powder (SLMP) anodes and activated carbon (AC) cathodes. The electrolyte L1 that was 1M LiPF6 in ethylene carbonate (EC)+ethyl methyl carbonate (EMC)+MB (20:20:60 v/v %)+0.1M lithium bis(oxalato)borate (LiBOB) and electrolyte L2 that was 1M LiPF6 in EC+EMC+MB (20:20:60 v/v %)+0.1M lithium difluoro(oxalato)borate (LiDFOB) enabled the LICs to discharge at the temperature as low as ?40° C., which the conventional electrolyte LP30 that was 1 M LiPF6 in EC+dimethyl carbonate (DMC) (50:50 w/w %) could not achieve. At the low temperature of ?40° C., L2 held more than 64% of the discharge capacity at 30° C., while the L1 only had the discharge capacity retention of 30%.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: November 6, 2018
    Assignee: GENERAL CAPACITOR, LLC
    Inventors: Wanjun Cao, Harry Chen, Jian-ping (Jim) Zheng, Daniel L. Adams
  • Patent number: 10053916
    Abstract: An earth-boring tool includes a tool body having an aperture therein defining a nozzle port, a nozzle or nozzle assembly disposed in the nozzle port, and a shape memory material disposed adjacent a surface of at least one component of the nozzle or nozzle assembly. The shape memory material retains at least one component of the nozzle or nozzle assembly by a threadless connection. The threadless connection includes mechanical interference between the shape memory material, the at least one component of the nozzle or nozzle assembly, and the tool body or another component of the nozzle or nozzle assembly. The shape memory material is formulated and configured to transform from a first phase and a first shape upon heating and to transform from a second phase and a second shape upon cooling.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: August 21, 2018
    Assignee: Baker Hughes Incorporated
    Inventors: Bo Yu, James Andy Oxford, Juan Miguel Bilen, Eric C. Sullivan, Wanjun Cao, Xu Huang, John H. Stevens, Chris Perez
  • Publication number: 20180230754
    Abstract: A cutting table comprises a polycrystalline hard material and at least one rhenium-containing structure within the polycrystalline hard material and comprising greater than or equal to about 10 weight percent rhenium. A cutting element, an earth-boring tool, and method of forming a cutting element are also described.
    Type: Application
    Filed: February 16, 2017
    Publication date: August 16, 2018
    Inventors: Wanjun Cao, Xu Huang, Steven W. Webb
  • Patent number: 10002717
    Abstract: The present invention provides for high performance lithium-ion capacitor laminate cells that include positive electrodes, negative electrodes and organic solvent electrolyte with lithium salt, and a method for making said high performance lithium-ion capacitor laminate cells. These high performance lithium-ion capacitor laminate cells of the present invention, include a negative electrode which is pre-doped with sufficient lithium ions by employing lithium sources including lithium powder known as SLMP or thin lithium films on the surface of negative electrodes, and this pre-doping with placing lithium sources on negative electrode surface results in LIC laminate cells with considerably higher performance in specific energy, specific power and cycle life.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: June 19, 2018
    Assignee: GENERAL CAPACITOR, LLC
    Inventors: Wanjun Cao, Harry Chen
  • Publication number: 20170301485
    Abstract: The present invention is directed to a method for pre-lithiation of negative electrodes during lithium loaded electrode manufacturing for use in lithium-ion capacitors. There is provided a system and method of manufacture of LIC electrodes using thin lithium film having holes therein, and in particular, to the process of manufacturing lithium loaded negative electrodes for lithium-ion capacitors by pre-lithiating electrodes with thin lithium metal films, wherein the thin lithium metal films include holes therein, and the lithium loaded negative electrodes are manufactured using a roll-to-roll lamination manufacturing process.
    Type: Application
    Filed: April 18, 2017
    Publication date: October 19, 2017
    Applicant: GENERAL CAPACITOR, LLC
    Inventors: Wanjun Cao, Jim P. Zheng
  • Publication number: 20170263388
    Abstract: The present invention is directed to a Process for Lithium Loaded Electrode Manufacturing for Lithium-Ion Capacitors, wherein there is provided a system of manufacture of electrodes using a lithium foil, and in particular, to the process of manufacturing lithium loaded negative electrodes for lithium-ion capacitors and the like using lithium foil, lithium strips and/or lithium films, employing a roll-to-roll manufacturing process wherein there is no drying time and no heat required to be applied to the laminator rolls, and wherein a lithium loaded negative electrode is manufactured using lithium foil strips in a roll-to-roll process, may include a top lithium strip and a bottom lithium strip on the negative electrode generated by the roll-to-roll process.
    Type: Application
    Filed: March 13, 2017
    Publication date: September 14, 2017
    Applicant: GENERAL CAPACITOR, LLC
    Inventor: Wanjun Cao
  • Publication number: 20170204675
    Abstract: An earth-boring tool includes a tool body having an aperture therein defining a nozzle port, a nozzle or nozzle assembly disposed in the nozzle port, and a shape memory material disposed adjacent a surface of at least one component of the nozzle or nozzle assembly. The shape memory material retains at least one component of the nozzle or nozzle assembly by a threadless connection. The threadless connection includes mechanical interference between the shape memory material, the at least one component of the nozzle or nozzle assembly, and the tool body or another component of the nozzle or nozzle assembly. The shape memory material is formulated and configured to transform from a first phase and a first shape upon heating and to transform from a second phase and a second shape upon cooling.
    Type: Application
    Filed: January 20, 2016
    Publication date: July 20, 2017
    Inventors: Bo Yu, James Andy Oxford, Juan Miguel Bilen, Eric C. Sullivan, Wanjun Cao, Xu Huang, John H. Stevens, Chris Perez
  • Publication number: 20170204677
    Abstract: An earth-boring tool includes a bit body and an actuator coupled to the bit body. The actuator includes at least one shape memory material configured to transform from a first shape to a second shape to move a bearing pad or a cutting element with respect to the bit body in response to a stimulus. A transformation from the first shape to the second shape includes a phase change from a first solid phase to a second solid phase. A depth-of-cut limiter includes a bearing element and at least one shape memory material coupled to the bearing element. A method of forming or servicing a wellbore includes rotating an earth-boring tool within a wellbore, applying a stimulus to an actuator to convert at least one shape memory material from a first shape to a second shape, and continuing to rotate the earth-boring tool within the wellbore after applying the stimulus.
    Type: Application
    Filed: January 20, 2016
    Publication date: July 20, 2017
    Inventors: Bo Yu, Juan Miguel Bilen, John H. Stevens, Wanjun Cao
  • Publication number: 20170029338
    Abstract: A method of forming a polycrystalline diamond compact includes forming a polycrystalline diamond material at a temperature and a pressure sufficient to form diamond-to-diamond bonds in the presence of a catalyst; substantially removing the catalyst from a volume of the polycrystalline diamond material from a first surface to a first leach depth; and substantially removing the catalyst from a volume of the polycrystalline diamond material from a second surface to a second, different leach depth. A polycrystalline diamond compact includes a polycrystalline diamond material having a first volume, a second volume, and a boundary between the first volume and the second volume. The first volume includes a catalyst disposed in interstitial spaces between diamond grains. The second volume is substantially free of the catalyst. The boundary's location is selected to control thermal stability and/or impact resistance.
    Type: Application
    Filed: July 31, 2015
    Publication date: February 2, 2017
    Inventors: Danny E. Scott, Wanjun Cao
  • Publication number: 20160307706
    Abstract: The present invention provides for two types of wide operating temperature range electrolyte formulations that contain methyl butyrate (MB) and additives have been investigated and compared in Lithium-ion capacitors (LICs), which were consisted of hard carbon (HC)/stabilized lithium metal powder (SLMP) anodes and activated carbon (AC) cathodes. The electrolyte L1 that was 1M LiPF6 in ethylene carbonate (EC)+ethyl methyl carbonate (EMC)+MB (20:20:60 v/v %)+0.1M lithium bis(oxalato)borate (LiBOB) and electrolyte L2 that was 1M LiPF6 in EC+EMC+MB (20:20:60 v/v %)+0.1M lithium difluoro(oxalato)borate (LiDFOB) enabled the LICs to discharge at the temperature as low as ?40° C., which the conventional electrolyte LP30 that was 1 M LiPF6 in EC+dimethyl carbonate (DMC) (50:50 w/w %) could not achieve. At the low temperature of ?40° C., L2 held more than 64% of the discharge capacity at 30° C., while the L1 only had the discharge capacity retention of 30%.
    Type: Application
    Filed: December 14, 2015
    Publication date: October 20, 2016
    Applicant: GENERAL CAPACITOR, LLC
    Inventors: Wanjun Cao, Harry Chen, Jian-ping (Jim) Zheng, Daniel L. Adams
  • Publication number: 20160126023
    Abstract: The present invention provides for high performance lithium-ion capacitor laminate cells that include positive electrodes, negative electrodes and organic solvent electrolyte with lithium salt, and a method for making said high performance lithium-ion capacitor laminate cells. These high performance lithium-ion capacitor laminate cells of the present invention, include a negative electrode which is pre-doped with sufficient lithium ions by employing lithium sources including lithium powder known as SLMP or thin lithium films on the surface of negative electrodes, and this pre-doping with placing lithium sources on negative electrode surface results in LIC laminate cells with considerably higher performance in specific energy, specific power and cycle life.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 5, 2016
    Applicant: GENERAL CAPACITOR, LLC
    Inventors: Wanjun Cao, Harry Chen