Patents by Inventor Joel G. Scrafton

Joel G. Scrafton 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: 9107755
    Abstract: A femoral prosthesis may be formed as a femoral component incorporating a base material and an articulating material. In one exemplary embodiment, the base material is a metal and the articulating material is a polymer. Specifically, the base material provides strength and rigidity to the femoral component, while the articulating material contacts a tibial prosthesis or natural tibia during joint articulation. In one exemplary embodiment, the articulating material forms the articulating surface of one or more condyle portions of the femoral component.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: August 18, 2015
    Assignee: Zimmer, Inc.
    Inventors: Oludele O. Popoola, Joel G. Scrafton, David M. Miller, Dirk Pletcher
  • Publication number: 20150014397
    Abstract: Methods for bonding a porous tantalum structure to a substrate are provided. The method includes placing a compressible or porous interlayer between a porous tantalum structure and a cobalt or cobalt-chromium substrate to form an assembly. The interlayer comprising a metal or metal alloy that has solid state solubility with both the substrate and the porous tantalum structure. Heat and pressure are applied to the assembly to achieve solid state diffusion between the substrate and the interlayer and the between the porous tantalum structure and the interlayer.
    Type: Application
    Filed: September 29, 2014
    Publication date: January 15, 2015
    Inventors: Gregory M. Hippensteel, Lawrence F. Peek, Jeffrey P. Anderson, Devendra Gorhe, Steve M. Allen, Clarence M. Panchison, David M. Miller, Joel G. Scrafton, Casey Harmon
  • Patent number: 8642112
    Abstract: A prosthetic implant having a thermally treated ceramic coating and a method of producing a coated prosthetic implant. The ceramic coating is deposited onto the prosthetic implant such as by a plasma spray coating process. The prosthetic implant is thermally treated in a low oxygen environment to increase the hardness and wear-resistance of the ceramic coating for improved articulation of the prosthetic implant.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: February 4, 2014
    Assignee: Zimmer, Inc.
    Inventors: Joel G. Scrafton, Jeffrey P. Anderson, David M. Miller, Oludele O. Popoola
  • Patent number: 8602290
    Abstract: A method for bonding a porous tantalum structure to a substrate is provided. The method comprises providing a substrate comprising cobalt or a cobalt-chromium alloy; an interlayer consisting essentially of at least one of hafnium, manganese, niobium, palladium, zirconium, titanium, or alloys or combinations thereof; and a porous tantalum structure. Heat and pressure are applied to the substrate, the interlayer, and the porous tantalum structure to achieve solid-state diffusion between the substrate and the interlayer and between the interlayer and the porous tantalum structure.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: December 10, 2013
    Assignee: Zimmer, Inc.
    Inventors: Gregory M. Hippensteel, Lawrence F. Peek, Jeffrey P. Anderson, Devendra Gorhe, Steve M. Allen, Joel G. Scrafton, Casey Harmon
  • Publication number: 20110233263
    Abstract: A method for bonding a porous tantalum structure to a substrate is provided. The method comprises providing a substrate comprising cobalt or a cobalt-chromium alloy; an interlayer consisting essentially of at least one of hafnium, manganese, niobium, palladium, zirconium, titanium, or alloys or combinations thereof; and a porous tantalum structure. Heat and pressure are applied to the substrate, the interlayer, and the porous tantalum structure to achieve solid-state diffusion between the substrate and the interlayer and between the interlayer and the porous tantalum structure.
    Type: Application
    Filed: April 22, 2011
    Publication date: September 29, 2011
    Applicant: ZIMMER, INC.
    Inventors: Gregory M. Hippensteel, Lawrence F. Peek, Jeffrey P. Anderson, Devendra Gorhe, Steve M. Allen, Joel G. Scrafton, Casey Harmon
  • Publication number: 20110230973
    Abstract: Methods for bonding a porous tantalum structure to a substrate are provided. The method includes placing a compressible or porous interlayer between a porous tantalum structure and a cobalt or cobalt-chromium substrate to form an assembly. The interlayer comprising a metal or metal alloy that has solid state solubility with both the substrate and the porous tantalum structure. Heat and pressure are applied to the assembly to achieve solid state diffusion between the substrate and the interlayer and the between the porous tantalum structure and the interlayer.
    Type: Application
    Filed: April 22, 2011
    Publication date: September 22, 2011
    Applicant: ZIMMER, INC.
    Inventors: Gregory M. Hippensteel, Lawrence F. Peek, Jeffrey P. Anderson, Devendra Gorhe, Steve M. Allen, Clarence M. Panchison, David M. Miller, Joel G. Scrafton, Casey Harmon
  • Publication number: 20110015750
    Abstract: A femoral prosthesis may be formed as a femoral component incorporating a base material and an articulating material. In one exemplary embodiment, the base material is a metal and the articulating material is a polymer. Specifically, the base material provides strength and rigidity to the femoral component, while the articulating material contacts a tibial prosthesis or natural tibia during joint articulation. In one exemplary embodiment, the articulating material forms the articulating surface of one or more condyle portions of the femoral component.
    Type: Application
    Filed: September 24, 2010
    Publication date: January 20, 2011
    Applicant: ZIMMER, INC.
    Inventors: Oludele O. Popoola, Joel G. Scrafton
  • Patent number: 7833274
    Abstract: A femoral prosthesis may be formed as a femoral component incorporating a base material and an articulating material. In one exemplary embodiment, the base material is a metal and the articulating material is a polymer. Specifically, the base material provides strength and rigidity to the femoral component, while the articulating material contacts a tibial prosthesis or natural tibia during joint articulation. In one exemplary embodiment, the articulating material forms the articulating surface of one or more condyle portions of the femoral component.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: November 16, 2010
    Assignee: Zimmer, Inc.
    Inventors: Oludele O. Popoola, Joel G. Scrafton
  • Publication number: 20100016987
    Abstract: A prosthetic implant having a thermally treated ceramic coating and a method of producing a coated prosthetic implant. The ceramic coating is deposited onto the prosthetic implant such as by a plasma spray coating process. The prosthetic implant is thermally treated in a low oxygen environment to increase the hardness and wear-resistance of the ceramic coating for improved articulation of the prosthetic implant.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 21, 2010
    Applicant: ZIMMER, INC.
    Inventors: Joel G. Scrafton, Jeffrey P. Anderson, Oludele O. Popoola, David M. Miller
  • Publication number: 20090125115
    Abstract: A femoral prosthesis may be formed as a femoral component incorporating a base material and an articulating material. In one exemplary embodiment, the base material is a metal and the articulating material is a polymer. Specifically, the base material provides strength and rigidity to the femoral component, while the articulating material contacts a tibial prosthesis or natural tibia during joint articulation. In one exemplary embodiment, the articulating material forms the articulating surface of one or more condyle portions of the femoral component.
    Type: Application
    Filed: January 14, 2009
    Publication date: May 14, 2009
    Applicant: ZIMMER, INC.
    Inventors: Oludele O. Popoola, Joel G. Scrafton
  • Patent number: 6945448
    Abstract: A method for attaching a porous metal layer to a dense metal substrate, wherein the method is particularly useful in forming orthopedic implants such as femoral knee components or acetabular cups. The method, in one embodiment thereof, comprises providing a structured porous layer; providing a dense metal substrate; providing a binding mixture; applying the binding mixture to the exterior of the substrate; placing the porous layer against the substrate such that the binding mixture is disposed there between forming an assembly; and heat treating the assembly to metallurgically bond the porous layer to the substrate.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: September 20, 2005
    Assignee: Zimmer Technology, Inc.
    Inventors: Dana J. Medlin, Steven J. Charlebois, William Clarke, Dirk L. Pletcher, Joel G. Scrafton, H. Ravindranath Shetty, Dale Swarts
  • Publication number: 20030232124
    Abstract: A method for attaching a porous metal layer to a dense metal substrate, wherein the method is particularly useful in forming orthopedic implants such as femoral knee components or acetabular cups. The method, in one embodiment thereof, comprises providing a structured porous layer; providing a dense metal substrate; providing a binding mixture; applying the binding mixture to the exterior of the substrate; placing the porous layer against the substrate such that the binding mixture is disposed there between forming an assembly; and heat treating the assembly to metallurgically bond the porous layer to the substrate.
    Type: Application
    Filed: June 6, 2003
    Publication date: December 18, 2003
    Inventors: Dana J. Medlin, Steven J. Charlebois, William Clarke, Dirk L. Pletcher, Joel G. Scrafton, H. Ravindranath Shetty, Dale Swarts