Multi-layered shingle
US8793955B2 · kind B2 · utility
15Cited by
19References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2012 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Mar 16, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24231
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A multi-layered shingle includes an underlay sheet having a longitudinally extending axis and a leading edge. The underlay sheet further defines a first layer and a second layer. The second layer is connected to the first layer along a first longitudinally extending fold line and folded against the first layer. An overlay sheet is bonded to the underlay sheet, and the first and second layers of the underlay sheet define multiple layers of a multi-layered shingle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.