Roofing system including roofing shingle, and associated method
US-2024352733-A1 · Oct 24, 2024 · US
Porous glass roofing granules
US10100521B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10100521-B2 |
| Application number | US-201314426189-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 6, 2013 |
| Priority date | Sep 11, 2012 |
| Publication date | Oct 16, 2018 |
| Grant date | Oct 16, 2018 |
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- Title
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Abstract
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A roofing granule includes a glass substrate and a plurality of pores in the glass substrate such that the roofing granule has a minimum total solar reflectance of at least 50%.
First claim
Opening claim text (preview).
The invention claimed is: 1. A roofing granule comprising a glass substrate comprising greater than 50% by volume of a glass and a plurality of pores within the glass substrate including a closed pore volume percent of at least about 3%, wherein the roofing granule has a minimum total solar reflectance of at least 50%; and wherein the glass is selected from the group consisting of soda lime silica, borosilicate glass, aluminosilicate glass, borate glass, phosphate glass, pre-fused glass, or recycled glass. 2. The roofing granule of claim 1 , wherein the roofing granule is uncolored. 3. The roofing granule of claim 1 , wherein a volume percent of the plurality of pores in the glass substrate is less than about 35%. 4. The roofing granule of claim 1 , wherein the plurality of pores have a diameter of between about 1 μm and 100 μm. 5. The roofing granule of claim 1 , and further comprising one or more pigments. 6. The roofing granule of claim 1 , wherein the glass substrate comprises a plurality of sections, and wherein a first section of the plurality of sections includes a first porosity and/or a first pigment, and a second section of the plurality of sections includes a second porosity and/or a second pigment.
Assignees
Inventors
Classifications
closed porosity · CPC title
Glasses, glazes or enamels with special properties · CPC title
- E04D1/20Primary
of plastics; {of asphalt;} of fibrous materials · CPC title
Particulate matter [e.g., sphere, flake, etc.] · CPC title
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US10100521B2 cover?
- A roofing granule includes a glass substrate and a plurality of pores in the glass substrate such that the roofing granule has a minimum total solar reflectance of at least 50%.
- Who is the assignee on this patent?
- 3M Innovative Properties Co
- What technology area does this patent fall under?
- Primary CPC classification E04D1/20. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Oct 16 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).