Porous chemical indicator for gaseous media
US9134251B2 · kind B2 · utility
2Cited by
33References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 15, 2011 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Sep 15, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Chemical indicators for acidic or basic gases include an inert, porous substrate, an indicator dye or mixture of dyes contained within at least some of the pores of the inert, porous substrate, and an inert adhesive layer attached to the inert, porous substrate. The porous substrate may be a microporous substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.