Patents by Inventor Christopher S.D. Lee
Christopher S.D. Lee 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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Publication number: 20230398719Abstract: In general, in various embodiments, the present disclosure is directed systems and methods for producing a porous surface from a solid piece of polymer. In particular, the present disclosure is directed to a mold for processing a material. The mold includes a body having a top surface and a bottom surface. A void within the body is configured to receive a porogen and a piece of thermoplastic material. The void extends in a top to bottom direction to form a non-through cavity with a cavity surface that is substantially parallel to the bottom surface of the body. A protrusion on the body extends from the cavity surface towards the top surface. The void extends at least halfway through the body towards the bottom surface. A peg is disposed on the body and shaped to matingly engage a weight via a hole within the weight.Type: ApplicationFiled: August 25, 2023Publication date: December 14, 2023Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S.D. Lee
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Patent number: 11772306Abstract: In general, in various embodiments, the present disclosure is directed systems and methods for producing a porous surface from a solid piece of polymer. In particular, the present disclosure is directed to systems that include a track assembly, mold assembly, press assembly, and methods for using the same for producing a porous surface from a solid piece of polymer. In some embodiments, the present systems and methods are directed to processing a polymer at a temperature below a melting point of the polymer to produce a solid piece of polymer with an integrated a porous surface.Type: GrantFiled: July 13, 2021Date of Patent: October 3, 2023Assignee: NuVasive, Inc.Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S. D. Lee
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Patent number: 11672637Abstract: A method for making a polymer with a porous layer from a solid piece of polymer is disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.Type: GrantFiled: August 26, 2020Date of Patent: June 13, 2023Assignee: NuVasive, Inc.Inventors: Wei-Hsiang Chang, Stephen Laffoon, Christopher S. D. Lee, David Lee Safranski
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Patent number: 11298217Abstract: Devices and methods for making a polymer with a porous layer from a solid piece of polymer are disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.Type: GrantFiled: July 29, 2019Date of Patent: April 12, 2022Assignee: Vertera, Inc.Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S. D. Lee, David Lee Safranski
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Publication number: 20210339437Abstract: In general, in various embodiments, the present disclosure is directed systems and methods for producing a porous surface from a solid piece of polymer. In particular, the present disclosure is directed to systems that include a track assembly, mold assembly, press assembly, and methods for using the same for producing a porous surface from a solid piece of polymer. In some embodiments, the present systems and methods are directed to processing a polymer at a temperature below a melting point of the polymer to produce a solid piece of polymer with an integrated a porous surface.Type: ApplicationFiled: July 13, 2021Publication date: November 4, 2021Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S.D. Lee
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Patent number: 11090843Abstract: In general, in various embodiments, the present disclosure is directed systems and methods for producing a porous surface from a solid piece of polymer. In particular, the present disclosure is directed to systems that include a track assembly, mold assembly, press assembly, and methods for using the same for producing a porous surface from a solid piece of polymer. In some embodiments, the present systems and methods are directed to processing a polymer at a temperature below a melting point of the polymer to produce a solid piece of polymer with an integrated a porous surface.Type: GrantFiled: July 2, 2020Date of Patent: August 17, 2021Assignee: Vertera, Inc.Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S. D. Lee
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Publication number: 20200383766Abstract: A method for making a polymer with a porous layer from a solid piece of polymer is disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.Type: ApplicationFiled: August 26, 2020Publication date: December 10, 2020Inventors: Wei-Hsiang Chang, Stephen Laffoon, Christopher S.D. Lee, David Lee Safranski
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Publication number: 20200331175Abstract: In general, in various embodiments, the present disclosure is directed systems and methods for producing a porous surface from a solid piece of polymer. In particular, the present disclosure is directed to systems that include a track assembly, mold assembly, press assembly, and methods for using the same for producing a porous surface from a solid piece of polymer. In some embodiments, the present systems and methods are directed to processing a polymer at a temperature below a melting point of the polymer to produce a solid piece of polymer with an integrated a porous surface.Type: ApplicationFiled: July 2, 2020Publication date: October 22, 2020Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S.D. Lee
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Patent number: 10786344Abstract: A method for making a polymer with a porous layer from a solid piece of polymer is disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.Type: GrantFiled: February 22, 2019Date of Patent: September 29, 2020Assignee: Vertera, Inc.Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S. D. Lee, David Lee Safranski
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Patent number: 10744687Abstract: In general, in various embodiments, the present disclosure is directed systems and methods for producing a porous surface from a solid piece of polymer. In particular, the present disclosure is directed to systems that include a track assembly, mold assembly, press assembly, and methods for using the same for producing a porous surface from a solid piece of polymer. In some embodiments, the present systems and methods are directed to processing a polymer at a temperature below a melting point of the polymer to produce a solid piece of polymer with an integrated a porous surface.Type: GrantFiled: November 13, 2019Date of Patent: August 18, 2020Assignee: Vertera, IncInventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S. D. Lee
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Publication number: 20200078993Abstract: In general, in various embodiments, the present disclosure is directed systems and methods for producing a porous surface from a solid piece of polymer. In particular, the present disclosure is directed to systems that include a track assembly, mold assembly, press assembly, and methods for using the same for producing a porous surface from a solid piece of polymer. In some embodiments, the present systems and methods are directed to processing a polymer at a temperature below a melting point of the polymer to produce a solid piece of polymer with an integrated a porous surface.Type: ApplicationFiled: November 13, 2019Publication date: March 12, 2020Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S.D. Lee
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Patent number: 10507606Abstract: In general, in various embodiments, the present disclosure is directed systems and methods for producing a porous surface from a solid piece of polymer. In particular, the present disclosure is directed to systems that include a track assembly, mold assembly, press assembly, and methods for using the same for producing a porous surface from a solid piece of polymer. In some embodiments, the present systems and methods are directed to processing a polymer at a temperature below a melting point of the polymer to produce a solid piece of polymer with an integrated a porous surface.Type: GrantFiled: February 8, 2019Date of Patent: December 17, 2019Assignee: Vertera, Inc.Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S. D. Lee
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Publication number: 20190343611Abstract: Devices and methods for making a polymer with a porous layer from a solid piece of polymer are disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.Type: ApplicationFiled: July 29, 2019Publication date: November 14, 2019Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S.D. Lee, David Lee Safranski
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Patent number: 10441610Abstract: Disclosed are methods and compositions of microbead carriers for delivery of cells and other biologically active substances to diseased or damaged tissue in a subject in need thereof.Type: GrantFiled: November 23, 2011Date of Patent: October 15, 2019Assignee: Georgia Tech Research CorporationInventors: Barbara Dale Boyan, Zvi Schwartz, Christopher S. D. Lee, Shirae Kerisha Leslie, Ramsey C. Kinney
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Patent number: 10405962Abstract: A method for making a polymer with a porous layer from a solid piece of polymer is disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.Type: GrantFiled: December 26, 2017Date of Patent: September 10, 2019Assignee: Vertera, Inc.Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S. D. Lee, David Lee Safranski
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Publication number: 20190183626Abstract: A method for making a polymer with a porous layer from a solid piece of polymer is disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.Type: ApplicationFiled: February 22, 2019Publication date: June 20, 2019Inventors: Wei-Hsang Chang, Stephen Lee Laffoon, Christopher S.D. Lee, David Lee Safranski
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Publication number: 20190168424Abstract: In general, in various embodiments, the present disclosure is directed systems and methods for producing a porous surface from a solid piece of polymer. In particular, the present disclosure is directed to systems that include a track assembly, mold assembly, press assembly, and methods for using the same for producing a porous surface from a solid piece of polymer. In some embodiments, the present systems and methods are directed to processing a polymer at a temperature below a melting point of the polymer to produce a solid piece of polymer with an integrated a porous surface.Type: ApplicationFiled: February 8, 2019Publication date: June 6, 2019Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S.D. Lee
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Patent number: 10231813Abstract: A method for making a polymer with a porous layer from a solid piece of polymer is disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.Type: GrantFiled: December 26, 2017Date of Patent: March 19, 2019Assignee: Vertera, Inc.Inventors: Wei-Hsang Chang, Stephen Lee Laffoon, Christopher S. D. Lee, David Lee Safranski
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Patent number: 10226883Abstract: In general, in various embodiments, the present disclosure is directed systems and methods for producing a porous surface from a solid piece of polymer. In particular, the present disclosure is directed to systems that include a track assembly, mold assembly, press assembly, and methods for using the same for producing a porous surface from a solid piece of polymer. In some embodiments, the present systems and methods are directed to processing a polymer at a temperature below a melting point of the polymer to produce a solid piece of polymer with an integrated a porous surface.Type: GrantFiled: July 18, 2017Date of Patent: March 12, 2019Assignee: Vertera, Inc.Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S. D. Lee
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Patent number: D944990Type: GrantFiled: March 5, 2018Date of Patent: March 1, 2022Assignee: Vertera, Inc.Inventors: Wei-Hsiang Chang, Stephen Lee Laffoon, Christopher S. D. Lee, David Lee Safranski