Nitrogen dioxide sensing apparatus and method using carbon nanomaterials as an ozone removal material
US8507288B2 · kind B2 · utility
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10References
15Claims
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Key dates
| Filing date | May 27, 2009 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | May 13, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/25875
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to the use of carbon nanomaterials as a filtration material pervious to nitrogen dioxide and impervious to ozone. The invention also relates to the use of carbon nanomaterials having a specific surface, measured by the BET method, of 15 to 40 m2/g inclusive and a form factor, equal to the ratio (highest dimension/lowest dimension) of the nanomaterial, of 5 to 250 inclusive, as material for filtering a gas mixture containing nitrogen dioxide and ozone, being pervious to the nitrogen dioxide and impervious to the ozone. The invention can be used in the field of air pollution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.