Patent · US Active

Shingle with low density granules and/or backdust

US7805909B2 · kind B2 · utility

23Cited by
25References
17Claims
0Family size

Inventors

Key dates

Filing dateApr 9, 2009
Grant dateOct 5, 2010
Priority date—
Expiry dateApr 9, 2029

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T428/31815
  • WIPO fieldSurface technology, coating
  • WIPO sectorChemistry

Abstract

A roofing shingle has low density granules adhered to at least a headlap region on a front surface of the roof shingle.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.