Transition metal azatetrabenzoporphyrins useful as gas sensors
US5451674A · kind A · utility
40Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1993 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Nov 30, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/19
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas sensor has a gas-sensing component which changes color and/or conductivity on exposure to certain gases, which component comprises a (mono, di or tri) azatetrabenzoporphyrin. Certain (mono, di or tri) azatetrabenzoporphyrins containing a transition metal ion selected from chromium (III), vanadyl, manganese, cobalt or iron (III) are novel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.