Patent ID: 8399027
Filing Date: 2013-03-19
Classification: A61L

Abstract:
1. A method of making an antimicrobial wound dressing, the method comprising: preparing a composition comprising silver sulfate and water; wherein any stabilizing agent is present in an amount less than 50 ppm based on the total weight of the silver sulfate composition; coating the silver sulfate composition on a cellulosic substrate; drying the coated substrate at a temperature of 125° C. to 190° C., such that the coated substrate darkens in proportion to the temperature, turning to a yellow color, a brown color, or a dark brown color; wherein after drying, the composition includes less than 20 wt % silver metal, based on the total weight of silver components in the composition; and maintaining the dried silver sulfate coated substrate at a relative humidity of no more than 50%; wherein the dry antimicrobial wound dressing is color stable.