发明授权
- 专利标题: Roofing products with zones of algae-resistant granules and method of manufacture
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申请号: US16728173申请日: 2019-12-27
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公开(公告)号: US11118354B2公开(公告)日: 2021-09-14
- 发明人: Xiaofeng Tang , Shuang Liu , Robert L. Jenkins , Mark W. Simon
- 申请人: CertainTeed LLC
- 申请人地址: US PA Malvern
- 专利权人: CertainTeed LLC
- 当前专利权人: CertainTeed LLC
- 当前专利权人地址: US PA Malvern
- 代理机构: McDonnell Boehnen Hulbert & Berghoff LLP
- 主分类号: E04D1/00
- IPC分类号: E04D1/00 ; E04D13/00 ; E04D1/26
摘要:
The present disclosure relates generally to roofing products, for example, suitable for use covering and protecting the roofs of structures. The present disclosure relates more particularly to a roofing product including an upper section and an exposed section. The roofing product includes a substrate having a top surface and a bottom surface, and a plurality of zones of roofing granules disposed on the top surface of the substrate. The plurality of zones includes first, second and third zones within the exposed section. The first zone includes a first collection of algae-resistant roofing granules and has a first algae-resistance intensity. The second zone includes a second collection of algae-resistant roofing granules and has a second algae-resistance intensity. The third zone has a third algae-resistance intensity that is different from the first algae-resistance intensity.
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