Invention Grant
- Patent Title: Algae resistant roofing granules with controlled algaecide leaching rates, algae resistant shingles and process for producing same
- Patent Title (中): 具有控制除藻剂浸出率，耐藻花叶片的藻类抗性屋面颗粒及其生产方法
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Application No.: US12877921Application Date: 2010-09-08
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Publication No.: US08668954B2Publication Date: 2014-03-11
- Inventor: Keith C. Hong , Husnu M. Kalkanoglu , Ming Liang Shiao , Anne B. Hardy , James A. Salvatore , Andrew G. Johnson
- Applicant: Keith C. Hong , Husnu M. Kalkanoglu , Ming Liang Shiao , Anne B. Hardy , James A. Salvatore , Andrew G. Johnson
- Applicant Address: US PA Valley Forge
- Assignee: CertainTeed Corporation
- Current Assignee: CertainTeed Corporation
- Current Assignee Address: US PA Valley Forge
- Agency: Paul & Paul
- Main IPC: B05D1/12
- IPC: B05D1/12
Abstract:
Algae-resistant roofing shingles are formed by extruding a mixture of mineral particles and a binder to form porous granule bodies, and algaecide is distributed in the pores to provide alqae-resistant granules, which are subsequently applied to roofing shingles. Release of the algaecide is controlled by the structure of the granules.
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