Husnu M. Kalkanoglu,Keith C. Hong,Gregory F. Jacobs
申请号：
US11561762
公开号：
US09334654B2
申请日:
2006.11.20
申请国别(地区):
US
年份:
2016
代理人:
摘要：
Roofing granule mixtures include multiple classes of algae-resistant granules, with each class of algae-resistant granules including at least one algaecide. One class of granules provides immediate algae resistance, while release of algaecide from other granules is delayed.
