John Joseph Scheible,Tomas Gerard Patrick McHugh,Alan Richard Priebe,Ronald Steven Cok
申请号：
US14519489
公开号：
US09271491B1
申请日:
2014.10.21
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A method of using a colored biocidal multi-layer structure includes locating the colored biocidal multi-layer structure on a surface, observing the colored biocidal multi-layer structure over time, and observing a change in the color in at least a portion of the colored biocidal multi-layer structure, indicating that the colored biocidal multi-layer structure is less effective. The colored biocidal multi-layer structure includes a first layer of a first color, and a biocidal second layer on or over the first layer, the biocidal second layer of a second color different from the first color.
