Patents Assigned to Keratec Limited
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Publication number: 20090069541Abstract: Film, fibre, foam and adhesive materials are produced from soluble S-sulfonated keratins. Once formed, the films, fibres, foams or adhesives are treated to modify the properties of the materials, in particular to improve the wet strength of the materials. Treatments used include removal of the S-sulfonate group by treatment with a reducing agent, treatment with an acid or treatment with a common protein crosslinking agent or treatment with a reduced form of keratin or keratin protein. The films are made by solvent casting a solution of S-sulfonated keratin proteins, the foam made by freeze-drying a solution of S-sulfonated keratin proteins and the fibres made by extruding a solution of a S-sulfonated keratin protein.Type: ApplicationFiled: October 15, 2008Publication date: March 12, 2009Applicant: Keratec LimitedInventors: Robert James Kelly, Alisa Dawn Roddick-Lanzilotta, Douglas Alexander Rankin, Warren Glenn Bryson
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Publication number: 20090062513Abstract: Film, fibre, foam and adhesive materials are produced from soluble S-sulfonated keratins. Once formed, the films, fibres, foams or adhesives are treated to modify the properties of the materials, in particular to improve the wet strength of the materials. Treatments used include removal of the S-sulfonate group by treatment with a reducing agent, treatment with an acid or treatment with a common protein crosslinking agent or treatment with a reduced form of keratin or keratin protein. The films are made by solvent casting a solution of S-sulfonated keratin proteins, the foam made by freeze-drying a solution of S-sulfonated keratin proteins and the fibres made by extruding a solution of a S-sulfonated keratin protein.Type: ApplicationFiled: October 15, 2008Publication date: March 5, 2009Applicant: Keratec LimitedInventors: Robert James Kelly, Alisa Dawn Roddick-Lanzilotta, Douglas Alexander Rankin, Warren Glenn Bryson
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Patent number: 7465321Abstract: Film, fibre, foam and adhesive materials are produced from soluble S-sulfonated keratins. Once formed, the films, fibres, foams or adhesives are treated to modify the properties of the materials, in particular to improve the wet strength of the materials. Treatments used include removal of the S-sulfonate group by treatment with a reducing agent, treatment with an acid or treatment with a common protein crosslinking agent or treatment with a reduced form of keratin or keratin protein. The films are made by solvent casting a solution of S-sulfonated keratin proteins, the foam made by freeze-drying a solution of S-sulfonated keratin proteins and the fibres made by extruding a solution of a S-sulfonated keratin protein.Type: GrantFiled: August 30, 2002Date of Patent: December 16, 2008Assignee: Keratec LimitedInventors: Robert James Kelly, Alisa Dawn Roddick-Lanzilotta, Douglas Alexander Rankin, Warren Glenn Bryson
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Publication number: 20080039951Abstract: The invention provides a biocompatible material derived from keratin that is useful for many aspects of medical treatment of bone. The keratin material is preferably S-sulfonated and enriched in intermediate filament proteins of high molecular weight. The keratin material may be porous for use as a bone replacement and augmentation product but also provided is the use of dense keratin materials in bone treatment for use as an internal fixation appliance in the treatment of bone fractures and bone regeneration, and a method for preparing the keratin material for use in the preservation, restoration and development of form and function of bone.Type: ApplicationFiled: October 9, 2007Publication date: February 14, 2008Applicant: KERATEC LIMITEDInventors: Philip Peplow, Subasinghe Nisanke George Dias, Alisa Roddick-Lanzilotta, Robert Kelly
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Patent number: 7297342Abstract: The invention provides a biocompatible material derived from keratin that is useful for many aspects of medical treatment of bone. The keratin material is preferably S-sulfonated and enriched in intermediate filament proteins of high molecular weight. The keratin material may be porous for use as a bone replacement and augmentation product but also provided is the use of dense keratin materials in bone treatment for use as an internal fixation appliance in the treatment of bone fractures and bone regeneration, and a method for preparing the keratin material for use in the preservation, restoration and development of form and function of bone.Type: GrantFiled: June 10, 2003Date of Patent: November 20, 2007Assignee: Keratec LimitedInventors: Philip Victor Peplow, Subasinghe Nisanke George Premalal Jayantha Dias, Alisa Dawn Roddick-Lanzilotta, Robert James Kelly
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Patent number: 7148327Abstract: A process for the preparation of soluble proteins of high molecular weight with little or no damage to the structural integrity of the proteins. The process is economically and environmentally acceptable by virtue of the cost of reagents that are used, and the recycling of some of those reagents, and is suitable for the production of soluble proteins on a large scale. The process includes a first stage using oxidative sulfitolysis followed by a second stage using mild conditions to extract the soluble protein. In the case of wool as the protein source the process leads to the production of soluble keratin proteins fractionated into the classes S-sulfonated keratin intermediate filament proteins and S-sulfonated keratin high sulfur proteins.Type: GrantFiled: July 17, 2002Date of Patent: December 12, 2006Assignee: Keratec LimitedInventors: Robert James Kelly, Gillian Helen Worth, Alisa Dawn Roddick-Lanzilotta, Douglas Alexander Rankin, Gregory David Ellis, Paul Johannes Roy Mesman, Conal Garth Summers, Diane Joyce Singleton