Patents Assigned to Polymer Group, Inc.
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Patent number: 10821632Abstract: The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion and materials used therein.Type: GrantFiled: March 7, 2018Date of Patent: November 3, 2020Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
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Publication number: 20180194042Abstract: The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion and materials used therein.Type: ApplicationFiled: March 7, 2018Publication date: July 12, 2018Applicants: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
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Patent number: 9968709Abstract: The present invention relates to methods for making cross-linked oxidation-resistant polymeric materials and preventing or minimizing in vivo elution of antioxidant from the antioxidant-containing polymeric materials. The invention also provides methods of doping polymeric materials with a spatial control of cross-linking and antioxidant distribution, for example, vitamin E (?-Tocopherol), and methods for extraction/elution of antioxidants, for example, vitamin E (?-tocopherol), from surface regions of antioxidant-containing polymeric materials, and materials used therewith also are provided.Type: GrantFiled: June 24, 2016Date of Patent: May 15, 2018Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Edward T. Kopesky, Ebru Oral
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Patent number: 9962463Abstract: The present invention relates to methods for making cross-linked, oxidatively stable, and highly crystalline polymeric materials. The invention also provides methods of treating irradiation-cross-linked antioxidant-containing polymers and materials used therewith.Type: GrantFiled: June 16, 2016Date of Patent: May 8, 2018Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
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Patent number: 9943993Abstract: The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion and materials used therein.Type: GrantFiled: May 16, 2017Date of Patent: April 17, 2018Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
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Patent number: 9873769Abstract: A method of forming thiolated poly(vinyl alcohol) hydrogels including reacting, in the presence of an acid, compounds containing a thiol functional group and a hydroxyl reactive group with one or more hydroxyl groups of poly(vinyl alcohol) via said hydroxyl reactive group, thereby forming thiolated poly(vinyl alcohol). The method further including reacting the thiol functional group of said compounds with a thiol reactive group of a crosslinker, thereby forming a hydrogel.Type: GrantFiled: July 10, 2014Date of Patent: January 23, 2018Assignee: CAMBRIDGE POLYMER GROUP, INC.Inventors: Gavin Braithwaite, Yuri Svirkin
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Publication number: 20170259467Abstract: The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion and materials used therein.Type: ApplicationFiled: May 16, 2017Publication date: September 14, 2017Applicants: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. MURATOGLU, Stephen H. SPIEGELBERG
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Patent number: 9688004Abstract: The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion and materials used therein.Type: GrantFiled: May 27, 2014Date of Patent: June 27, 2017Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
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Publication number: 20170049934Abstract: The present invention relates to methods for making cross-linked oxidation-resistant polymeric materials and preventing or minimizing in vivo elution of antioxidant from the antioxidant-containing polymeric materials. The invention also provides methods of doping polymeric materials with a spatial control of cross-linking and antioxidant distribution, for example, vitamin E (?-Tocopherol), and methods for extraction/elution of antioxidants, for example, vitamin E (?-tocopherol), from surface regions of antioxidant-containing polymeric materials, and materials used therewith also are provided.Type: ApplicationFiled: June 24, 2016Publication date: February 23, 2017Applicants: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. MURATOGLU, Edward T. KOPESKY, Ebru ORAL
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Patent number: 9561306Abstract: The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion, post-doping annealing, and materials used therein.Type: GrantFiled: March 10, 2014Date of Patent: February 7, 2017Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
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Publication number: 20160296661Abstract: The present invention relates to methods for making cross-linked, oxidatively stable, and highly crystalline polymeric materials. The invention also provides methods of treating irradiation-cross-linked antioxidant-containing polymers and materials used therewith.Type: ApplicationFiled: June 16, 2016Publication date: October 13, 2016Applicants: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. MURATOGLU, Stephen H. SPIEGELBERG
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Patent number: 9441081Abstract: The present invention relates to methods for making cross-linked, oxidatively stable, and highly crystalline polymeric materials. The invention also provides methods of treating irradiation-cross-linked antioxidant-containing polymers and materials used therewith.Type: GrantFiled: March 3, 2008Date of Patent: September 13, 2016Assignees: The General Hospital Corp., Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
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Patent number: 9433705Abstract: The present invention relates to methods for making cross-linked oxidation-resistant polymeric materials and preventing or minimizing in vivo elution of antioxidant from the antioxidant-containing polymeric materials. The invention also provides methods of doping polymeric materials with a spatial control of cross-linking and antioxidant distribution, for example, vitamin E (?-Tocopherol), and methods for extraction/elution of antioxidants, for example, vitamin E (?-tocopherol), from surface regions of antioxidant-containing polymeric materials, and materials used therewith also are provided.Type: GrantFiled: September 25, 2013Date of Patent: September 6, 2016Assignees: The General Hospital Corp., Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Edward T. Kopesky, Ebru Oral
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Publication number: 20160230333Abstract: Vapor-permeable, substantially water-impermeable, corrosion-inhibiting composites are disclosed herein. For instance, disclosed herein are composites comprising a first layer comprising a first nonwoven; and a second layer adjacent to and mechanically integrated with the first layer, the second layer comprising a polymer having a melt flow index of about 10 g/10 mins to about 200 g/10 mins, and a corrosion inhibitor, wherein the composite has a moisture vapor transmission rate of from about 25 g/m2/day to about 1000 g/m2/day when measured at about 23° C. and about 50% relative humidity. Also disclosed herein are methods of making and using the same.Type: ApplicationFiled: February 8, 2016Publication date: August 11, 2016Applicant: POLYMER GROUP, INC.Inventor: Brian Andrew Hickie
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Publication number: 20160219799Abstract: Fabrics suitable for a wide variety of uses, including coverage of crops, crop planting sites, or both, are disclosed. The fabrics may comprise at least one spunbond layer comprising filaments including a filler. The at least one spunbond layer may comprise a basis weight of least about 12 grams-per-meter-squared and the at least one spunbond layer may comprise an average transmittance value within the photosynthetic active radiation (PAR) across wavelengths 400 nm to 700 nm comprising about 37% or less. Methods of enhancing crop growth are also disclosed.Type: ApplicationFiled: February 4, 2016Publication date: August 4, 2016Applicant: Polymer Group, Inc.Inventors: Robert Garcia Pano, Marie-Pierre Burckel
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Publication number: 20160206393Abstract: Absorbent composites suitable for a wide variety of uses (e.g., sorbent drapes, sorbent patches around a fenestration area, tray liners for surgical tools, incontinence pads and liners, other liners, etc.) are provided. The composite includes an absorbent nonwoven. The absorbent nonwoven may comprise a hydroentangled spunbond web. The composite also may comprise a liquid-impermeable film. One or more absorbent nonwovens of a composite may additionally comprise a three-dimensional pattern, for example, a three-dimensional pattern that has been imaged using hydroentanglement. Optionally, any one or more layers of the composites may comprise an antimicrobial additive.Type: ApplicationFiled: January 19, 2016Publication date: July 21, 2016Applicant: Polymer Group, Inc.Inventors: Lei Wang, Nyle Bishop, Ralph A. Moody, III, Jerry Snider, Pierre Grondin
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Publication number: 20160207280Abstract: Elastic nonwoven composites suitable for a wide variety of uses are provided. The composite includes at least one extensible nonwoven layer, including a first extensible nonwoven layer, and at least one elastic nonwoven layer, in which the nonwoven layer comprises elastic continuous filaments. The composite may be bonded and activated by, at least in part, a stretching operation. The elastic continuous filaments may comprise an additive, such as a slip additive.Type: ApplicationFiled: January 19, 2016Publication date: July 21, 2016Applicant: Polymer Group, Inc.Inventors: Sven Krister Erlandsson, Paul Michael Harmon, Philippe Guipouy, Didier Hunsinger, Robert Garcia Pano, Gerard Baltzinger, Ralph A. Moody, III
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Publication number: 20160176168Abstract: Breathable multilayer films suitable for a wide variety of uses (e.g., protective apparel, surgical gowns, surgical drapes, aprons, roofing material, house wrap, etc.) are disclosed. The breathable multilayer film may include a monolithic core layer. The monolithic core layer may comprise at least one highly breathable polymer. The breathable multilayer film may also include at least one skin layer. The skin layer or layers may comprise at least one highly breathable polymer, a filler, and a non-breathable material. An exemplary structure of the breathable multilayer film provides a monolithic core layer, a first skin layer on one side of the monolithic core layer, and a second skin layer on the other side of the monolithic core layer. An exemplary construction of one or both of the skin layers includes one or more highly breathable polymers, a tiller, and a non-breathable material. The filler, for example, may comprise calcium carbonate.Type: ApplicationFiled: December 17, 2015Publication date: June 23, 2016Applicant: Polymer Group, Inc.Inventor: Rongguo Zhao
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Patent number: 9370878Abstract: The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion and materials used therein.Type: GrantFiled: March 14, 2013Date of Patent: June 21, 2016Assignees: The General Hospital Corp., Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
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Publication number: 20150275404Abstract: A fiber defined by a surface having a concentration of antimicrobial and a center having another concentration of antimicrobial is provided. The concentration of antimicrobial at the surface of the fiber is greater than the concentration of antimicrobial at the center of the fiber. Nonwovens manufactured from the fiber are also provided. The antimicrobial may include an antimicrobial heat labile component in conjunction with a carrier.Type: ApplicationFiled: March 25, 2015Publication date: October 1, 2015Applicants: POLYMER GROUP, INC., TRIOCIDE, INC.Inventors: Sven Krister Erlandsson, Frank M. Fosco, JR., Ralph A. Moody, III, Pierre D. Grondin, John Frederick Steffen