The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2008
Filed:
Aug. 30, 2002
Robert James Kelly, Christchurch, NZ;
Alisa Dawn Roddick-lanzilotta, Canterbury, NZ;
Douglas Alexander Rankin, Christchurch, NZ;
Warren Glenn Bryson, Christchurch, NZ;
Robert James Kelly, Christchurch, NZ;
Alisa Dawn Roddick-Lanzilotta, Canterbury, NZ;
Douglas Alexander Rankin, Christchurch, NZ;
Warren Glenn Bryson, Christchurch, NZ;
Keratec Limited, , NZ;
Abstract
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.