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).
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Patent number: 9107755Abstract: 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: GrantFiled: September 24, 2010Date of Patent: August 18, 2015Assignee: Zimmer, Inc.Inventors: Oludele O. Popoola, Joel G. Scrafton, David M. Miller, Dirk Pletcher
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Publication number: 20150014397Abstract: 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: ApplicationFiled: September 29, 2014Publication date: January 15, 2015Inventors: 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
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Patent number: 8642112Abstract: 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: GrantFiled: July 15, 2009Date of Patent: February 4, 2014Assignee: Zimmer, Inc.Inventors: Joel G. Scrafton, Jeffrey P. Anderson, David M. Miller, Oludele O. Popoola
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Patent number: 8602290Abstract: 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: GrantFiled: April 22, 2011Date of Patent: December 10, 2013Assignee: Zimmer, Inc.Inventors: Gregory M. Hippensteel, Lawrence F. Peek, Jeffrey P. Anderson, Devendra Gorhe, Steve M. Allen, Joel G. Scrafton, Casey Harmon
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Publication number: 20110233263Abstract: 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: ApplicationFiled: April 22, 2011Publication date: September 29, 2011Applicant: ZIMMER, INC.Inventors: Gregory M. Hippensteel, Lawrence F. Peek, Jeffrey P. Anderson, Devendra Gorhe, Steve M. Allen, Joel G. Scrafton, Casey Harmon
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Publication number: 20110230973Abstract: 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: ApplicationFiled: April 22, 2011Publication date: September 22, 2011Applicant: 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
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Publication number: 20110015750Abstract: 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: ApplicationFiled: September 24, 2010Publication date: January 20, 2011Applicant: ZIMMER, INC.Inventors: Oludele O. Popoola, Joel G. Scrafton
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Patent number: 7833274Abstract: 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: GrantFiled: January 14, 2009Date of Patent: November 16, 2010Assignee: Zimmer, Inc.Inventors: Oludele O. Popoola, Joel G. Scrafton
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Publication number: 20100016987Abstract: 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: ApplicationFiled: July 15, 2009Publication date: January 21, 2010Applicant: ZIMMER, INC.Inventors: Joel G. Scrafton, Jeffrey P. Anderson, Oludele O. Popoola, David M. Miller
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Publication number: 20090125115Abstract: 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: ApplicationFiled: January 14, 2009Publication date: May 14, 2009Applicant: ZIMMER, INC.Inventors: Oludele O. Popoola, Joel G. Scrafton
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Patent number: 6945448Abstract: 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: GrantFiled: June 6, 2003Date of Patent: September 20, 2005Assignee: Zimmer Technology, Inc.Inventors: Dana J. Medlin, Steven J. Charlebois, William Clarke, Dirk L. Pletcher, Joel G. Scrafton, H. Ravindranath Shetty, Dale Swarts
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Publication number: 20030232124Abstract: 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: ApplicationFiled: June 6, 2003Publication date: December 18, 2003Inventors: Dana J. Medlin, Steven J. Charlebois, William Clarke, Dirk L. Pletcher, Joel G. Scrafton, H. Ravindranath Shetty, Dale Swarts