Patents by Inventor John H. Stevens

John H. Stevens 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: 10493550
    Abstract: Methods for welding a particle-matrix composite body to another body and repairing particle-matrix composite bodies are disclosed. Additionally, earth-boring tools having a joint that includes an overlapping root portion and a weld groove having a face portion with a first bevel portion and a second bevel portion are disclosed. In some embodiments, a particle-matrix bit body of an earth-boring tool may be repaired by removing a damaged portion, heating the particle-matrix composite bit body, and forming a built-up metallic structure thereon. In other embodiments, a particle-matrix composite body may be welded to a metallic body by forming a joint, heating the particle-matrix composite body, melting a metallic filler material forming a weld bead and cooling the welded particle-matrix composite body, metallic filler material and metallic body at a controlled rate.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: December 3, 2019
    Assignee: Baker Hughes, a GE company, LLC
    Inventors: John H. Stevens, Redd H. Smith, James Andy Oxford, Jose Ramirez, Nathan David Ames, Shuchi Khurana
  • 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: 20190248807
    Abstract: The present disclosure relates generally to modulators of Cot (cancer Osaka thyroid) and methods of use and manufacture thereof.
    Type: Application
    Filed: April 23, 2019
    Publication date: August 15, 2019
    Applicant: Gilead Sciences, Inc.
    Inventors: Elizabeth M. Bacon, Gayatri Balan, Chienhung Chou, Christopher T. Clark, Jeromy J. Cottell, Musong Kim, Thorsten A. Kirschberg, John O. Link, Gary B. Phillips, Scott D. Schroeder, Neil H. Squires, Kirk L. Stevens, James G. Taylor, William J. Watkins, Nathan E. Wright, Sheila M. Zipfel
  • Patent number: 10316017
    Abstract: The present disclosure relates generally to modulators of Cot (cancer Osaka thyroid) and methods of use and manufacture thereof.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: June 11, 2019
    Assignee: GILEAD SCIENCES, INC.
    Inventors: Elizabeth M. Bacon, Gayatri Balan, Chien-Hung Chou, Christopher T. Clark, Jeromy J. Cottell, Musong Kim, Thorsten A. Kirschberg, John O. Link, Gary Phillips, Scott D. Schroeder, Neil H. Squires, Kirk L. Stevens, James G. Taylor, William J. Watkins, Nathan E. Wright, Sheila M. Zipfel
  • Patent number: 10280479
    Abstract: An earth-boring tool includes a tool body, at least one cutting element, and a retaining member comprising a shape memory material (e.g., alloy, polymer, etc.) located between a surface of the tool body and a surface of the cutting element. The shape memory material is configured to transform, responsive to application of a stimulus, from a first solid phase to a second solid phase. The retaining member comprises the shape memory material in the second solid phase, and at least partially retains the at least one cutting element adjacent the tool body. The shape memory material may be trained in a first phase to a first shape, and trained in a second phase to a second shape. The retaining member may be at least partially within a cavity in the first phase, then transformed to the second phase to apply a force securing the cutting element to the tool body.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: May 7, 2019
    Assignee: Baker Hughes, a GE company, LLC
    Inventors: Bo Yu, Xu Huang, Juan Miguel Bilen, John H. Stevens, Eric C. Sullivan
  • Publication number: 20190061068
    Abstract: A method includes disposing a braze material adjacent a first body and a second body; heating the braze material and forming a transient liquid phase; and transforming the transient liquid phase to a solid phase and forming a bond between the first body and the second body. The braze material includes copper, silver, zinc, magnesium, and at least one material selected from the group consisting of nickel, tin, cobalt, iron, phosphorous, indium, lead, antimony, cadmium, and bismuth.
    Type: Application
    Filed: October 29, 2018
    Publication date: February 28, 2019
    Inventors: Wei Chen, Marc W. Bird, John H. Stevens
  • Patent number: 10160063
    Abstract: A method includes disposing a braze material adjacent a first body and a second body; heating the braze material and forming a transient liquid phase; and transforming the transient liquid phase to a solid phase and forming a bond between the first body and the second body. The braze material includes copper, silver, zinc, magnesium, and at least one material selected from the group consisting of nickel, tin, cobalt, iron, phosphorous, indium, lead, antimony, cadmium, and bismuth.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: December 25, 2018
    Assignee: Baker Hughes Incorporated
    Inventors: Wei Chen, Marc W. Bird, John H. Stevens
  • 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
  • Patent number: 10047882
    Abstract: Coupling members for coupling an earth-boring drill tool to a drill string, drilling tools including a coupling member attached to a body of an earth-boring drill tool, methods for forming drilling tools including a coupling member, and methods for forming coupling members are disclosed. A coupling member may include a distal region comprising a first material composition and a proximal region comprising a second, different material composition. A drilling tool may include a body that is attached to a coupling member with a varied material composition for coupling the body to a drill string.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: August 14, 2018
    Assignee: Baker Hughes Incorporated
    Inventors: John H. Stevens, Jimmy W. Eason, Ian D. Harris
  • Publication number: 20180010394
    Abstract: Articles comprising at least a portion of an earth-boring tool include at least one insert and a solidified eutectic or near-eutectic composition including a metal phase and a hard material phase. Other articles include a solidified eutectic or near-eutectic composition including a metal phase, a hard material phase and a coating material in contact with the solidified eutectic or near-eutectic composition.
    Type: Application
    Filed: September 22, 2017
    Publication date: January 11, 2018
    Inventors: John H. Stevens, Jimmy W. Eason
  • Publication number: 20170304959
    Abstract: A method includes disposing a braze material adjacent a first body and a second body; heating the braze material and forming a transient liquid phase; and transforming the transient liquid phase to a solid phase and forming a bond between the first body and the second body. The braze material includes copper, silver, zinc, magnesium, and at least one material selected from the group consisting of nickel, tin, cobalt, iron, phosphorous, indium, lead, antimony, cadmium, and bismuth.
    Type: Application
    Filed: July 11, 2017
    Publication date: October 26, 2017
    Inventors: Wei Chen, Marc W. Bird, John H. Stevens
  • Patent number: 9790745
    Abstract: Articles comprising at least a portion of an earth-boring tool include at least one insert and a solidified eutectic or near-eutectic composition including a metal phase and a hard material phase. Other articles include a solidified eutectic or near-eutectic composition including a metal phase, a hard material phase and a coating material in contact with the solidified eutectic or near-eutectic composition.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: October 17, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: John H. Stevens, Jimmy W. Eason
  • Patent number: 9790608
    Abstract: A method of forming a down-hole tool comprises contacting at least a portion of at least one down-hole structure comprising at least one ceramic-metal composite material with a molten electrolyte comprising sodium tetraborate. Electrical current is applied to at least a portion of the at least one down-hole structure to form at least one borided down-hole structure comprising at least one metal boride material. Other methods of forming a down-hole tool, and a down-hole tool are also described.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: October 17, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Vivekanand Sista, John H. Stevens, James L. Overstreet
  • Publication number: 20170282332
    Abstract: Methods of forming at least a portion of an earth-boring tool include providing particulate matter including a hard material in a mold cavity, melting a metal and the hard material to form a molten composition comprising a eutectic or near-eutectic composition of the metal and the hard material, casting the molten composition to form the at least a portion of an earth-boring tool within the mold cavity, and providing an inoculant within the mold cavity. Methods of forming a roller cone of an earth-boring rotary drill bit include forming a molten composition, casting the molten composition within a mold cavity, solidifying the molten composition to form the roller cone, and controlling grain growth using an inoculant as the molten composition solidifies. Articles including components of earth-boring tools are fabricated using such methods.
    Type: Application
    Filed: June 19, 2017
    Publication date: October 5, 2017
    Inventor: John H. Stevens
  • Publication number: 20170266746
    Abstract: Methods for welding a particle-matrix composite body to another body and repairing particle-matrix composite bodies are disclosed. Additionally, earth-boring tools having a joint that includes an overlapping root portion and a weld groove having a face portion with a first bevel portion and a second bevel portion are disclosed. In some embodiments, a particle-matrix bit body of an earth-boring tool may be repaired by removing a damaged portion, heating the particle-matrix composite bit body, and forming a built-up metallic structure thereon. In other embodiments, a particle-matrix composite body may be welded to a metallic body by forming a joint, heating the particle-matrix composite body, melting a metallic filler material forming a weld bead and cooling the welded particle-matrix composite body, metallic filler material and metallic body at a controlled rate.
    Type: Application
    Filed: May 26, 2017
    Publication date: September 21, 2017
    Inventors: John H. Stevens, Redd H. Smith, James Andy Oxford, Jose Ramirez, Nathan David Amens, Shuchi Khurana
  • Patent number: 9765441
    Abstract: A method of forming a downhole tool comprises contacting at least one downhole structure comprising at least one metal material with a molten electrolyte comprising anhydrous sodium tetraborate. Electrical current is applied to at least a portion of the at least one downhole structure to form at least one borided downhole structure comprising at least one metal boride material. Other methods of forming a downhole tool, and a downhole tool are also described.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: September 19, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Vivekanand Sista, James L. Overstreet, John H. Stevens
  • Publication number: 20170259365
    Abstract: A method includes disposing a braze material between a first body and a second body. The braze material includes a first composition and a second composition. The second composition has a melting point higher than the first composition. The braze material may be heated to a brazing temperature between the melting points of the first and second materials and maintaining the braze material at the brazing temperature for a period of time to transform a transient liquid phase to a solid phase, forming a bond between the first body and the second body. A braze material for securing solid bodies includes a first composition and a second composition. The first composition includes at least one element selected from the group consisting of indium, tin, zinc, and magnesium. An earth-boring tool includes a first body, a second body, and a braze material bonding the second body to the first body.
    Type: Application
    Filed: May 30, 2017
    Publication date: September 14, 2017
    Inventors: Wei Chen, James L. Overstreet, John H. Stevens
  • Patent number: 9731384
    Abstract: A method includes disposing a braze material adjacent a first body and a second body; heating the braze material and forming a transient liquid phase; and transforming the transient liquid phase to a solid phase and forming a bond between the first body and the second body. The braze material includes copper, silver, zinc, magnesium, and at least one material selected from the group consisting of nickel, tin, cobalt, iron, phosphorous, indium, lead, antimony, cadmium, and bismuth.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: August 15, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Wei Chen, Marc W. Bird, John H. Stevens
  • 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: 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