Method of forming chelated collagen having bactericidal properties
Patent 4847049 Issued on July 11, 1989. Estimated Expiration Date: 
March 20, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 20, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2304478 3152976 3380848 3427301 3748142 3792161 3800792 Crosslinked collagen-mucopolysaccharide composite materials Collagen skin dressing Sterilization of packaging material InventorAssigneeApplicationNo. 07/028645 filed on 03/20/1987US Classes:422/24, Ultraviolet106/157.6, Elemental halogen, inorganic halogen compound, or inorganic nitrate compound204/157.68, Carbohydrate or protein product produced430/642, Gelatin or derivative containing530/356CollagenExaminersPrimary: Schain, Howard E.Attorney, Agent or FirmInternational ClassesA61L 2/00 (20060101)C08H 1/00 (20060101) C08H 1/06 (20060101) A61K 49/00 (20060101) A61L 2/18 (20060101) A61L 27/54 (20060101) A61L 27/24 (20060101) A61L 27/00 (20060101) A61F 2/00 (20060101) AbstractA method is provided for protecting renatured collagen against bacterial and fungal attack by contacting the collagen with a silver ion-containing solution at a pH from 4.0 to 9.0 and exposing the silver-chelated collagen to ultraviolet radiation.Other References
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