Patents Assigned to Polymer Group, Inc.
  • Publication number: 20180194042
    Abstract: 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: Application
    Filed: March 7, 2018
    Publication date: July 12, 2018
    Applicants: The General Hospital Corporation, Cambridge Polymer Group, Inc.
    Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
  • Patent number: 9968709
    Abstract: 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: Grant
    Filed: June 24, 2016
    Date of Patent: May 15, 2018
    Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.
    Inventors: Orhun K. Muratoglu, Edward T. Kopesky, Ebru Oral
  • Patent number: 9962463
    Abstract: 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: Grant
    Filed: June 16, 2016
    Date of Patent: May 8, 2018
    Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.
    Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
  • Patent number: 9943993
    Abstract: 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: Grant
    Filed: May 16, 2017
    Date of Patent: April 17, 2018
    Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.
    Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
  • Patent number: 9873769
    Abstract: 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: Grant
    Filed: July 10, 2014
    Date of Patent: January 23, 2018
    Assignee: CAMBRIDGE POLYMER GROUP, INC.
    Inventors: Gavin Braithwaite, Yuri Svirkin
  • Publication number: 20170259467
    Abstract: 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: Application
    Filed: May 16, 2017
    Publication date: September 14, 2017
    Applicants: The General Hospital Corporation, Cambridge Polymer Group, Inc.
    Inventors: Orhun K. MURATOGLU, Stephen H. SPIEGELBERG
  • Patent number: 9688004
    Abstract: 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: Grant
    Filed: May 27, 2014
    Date of Patent: June 27, 2017
    Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.
    Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
  • Publication number: 20170049934
    Abstract: 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: Application
    Filed: June 24, 2016
    Publication date: February 23, 2017
    Applicants: The General Hospital Corporation, Cambridge Polymer Group, Inc.
    Inventors: Orhun K. MURATOGLU, Edward T. KOPESKY, Ebru ORAL
  • Patent number: 9561306
    Abstract: 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: Grant
    Filed: March 10, 2014
    Date of Patent: February 7, 2017
    Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.
    Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
  • Publication number: 20160296661
    Abstract: 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: Application
    Filed: June 16, 2016
    Publication date: October 13, 2016
    Applicants: The General Hospital Corporation, Cambridge Polymer Group, Inc.
    Inventors: Orhun K. MURATOGLU, Stephen H. SPIEGELBERG
  • Patent number: 9441081
    Abstract: 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: Grant
    Filed: March 3, 2008
    Date of Patent: September 13, 2016
    Assignees: The General Hospital Corp., Cambridge Polymer Group, Inc.
    Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
  • Patent number: 9433705
    Abstract: 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: Grant
    Filed: September 25, 2013
    Date of Patent: September 6, 2016
    Assignees: The General Hospital Corp., Cambridge Polymer Group, Inc.
    Inventors: Orhun K. Muratoglu, Edward T. Kopesky, Ebru Oral
  • Publication number: 20160230333
    Abstract: 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: Application
    Filed: February 8, 2016
    Publication date: August 11, 2016
    Applicant: POLYMER GROUP, INC.
    Inventor: Brian Andrew Hickie
  • Publication number: 20160219799
    Abstract: 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: Application
    Filed: February 4, 2016
    Publication date: August 4, 2016
    Applicant: Polymer Group, Inc.
    Inventors: Robert Garcia Pano, Marie-Pierre Burckel
  • Publication number: 20160206393
    Abstract: 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: Application
    Filed: January 19, 2016
    Publication date: July 21, 2016
    Applicant: Polymer Group, Inc.
    Inventors: Lei Wang, Nyle Bishop, Ralph A. Moody, III, Jerry Snider, Pierre Grondin
  • Publication number: 20160207280
    Abstract: 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: Application
    Filed: January 19, 2016
    Publication date: July 21, 2016
    Applicant: Polymer Group, Inc.
    Inventors: Sven Krister Erlandsson, Paul Michael Harmon, Philippe Guipouy, Didier Hunsinger, Robert Garcia Pano, Gerard Baltzinger, Ralph A. Moody, III
  • Publication number: 20160176168
    Abstract: 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: Application
    Filed: December 17, 2015
    Publication date: June 23, 2016
    Applicant: Polymer Group, Inc.
    Inventor: Rongguo Zhao
  • Patent number: 9370878
    Abstract: 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: Grant
    Filed: March 14, 2013
    Date of Patent: June 21, 2016
    Assignees: The General Hospital Corp., Cambridge Polymer Group, Inc.
    Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
  • Publication number: 20150275404
    Abstract: 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: Application
    Filed: March 25, 2015
    Publication date: October 1, 2015
    Applicants: POLYMER GROUP, INC., TRIOCIDE, INC.
    Inventors: Sven Krister Erlandsson, Frank M. Fosco, JR., Ralph A. Moody, III, Pierre D. Grondin, John Frederick Steffen
  • Patent number: 9029277
    Abstract: A breathable laminate has a liquid-resistant backing film layer having varied vapor permeability that includes breathable thinned localized regions and thicker non-breathable regions, wherein the film layer is co-extensively directly joined with a liquid- and vapor-permeable nonwoven fabric. The breathable laminate can have unidirectional air permeability. The present invention also relates to disposable apparel and absorbent products which incorporate the breathable laminate, and methods of making the breathable laminate.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: May 12, 2015
    Assignee: Polymer Group, Inc.
    Inventor: Mou Chung Ngai