Reversible detector for gaseous carbon dioxide
US6677159B1 · kind B1 · utility
20Cited by
6References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1998 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Dec 2, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/204998
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for visually and continuously monitoring gaseous concentrations of electrophiles such as carbon dioxide. A coating composition comprising an organic binder, filler/pigment, an activator, and carbon dioxide sensitive color indicator interacts with a primed substrate to which it is applied for support. The coated primed substrate may then be used for estimation of carbon dioxide concentration by the detection of a substantially instantaneous and reversible color change of the coated primed substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.