Extruded polystyrene boardstock and roof structure containing the extruded polystyrene boardstock
US12168338B2 · kind B2 · utility
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5References
14Claims
0Family size
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Key dates
| Filing date | Jun 16, 2022 |
| Grant date | Dec 17, 2024 |
| Priority date | — |
| Expiry date | Jun 16, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A30/254
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An inverted roof membrane assembly (IRMA) includes decking, a waterproofing membrane above the decking, a layer of polymer foam insulation board above the waterproofing membrane, and ballast above the polymer foam insulation board layer. The polymer foam insulation board includes a polymer foam layer that includes an alkenyl aromatic polymer and an infrared radiation attenuator, and first and second facer layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.