Ion concentration transistor and dual-mode sensors
US7544979B2 · kind B2 · utility
2Cited by
4References
44Claims
0Family size
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Key dates
| Filing date | Apr 16, 2004 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Jun 20, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4148
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ion concentration sensor produces a signal reflective of the ion concentration within a solution. The ion concentration sensor is based on an ion sensitive transistor having a solution input, a reference input, a diffusion input, and a diffusion output. The ion sensitive transistor is connected as a pass transistor, such that the diffusion output provides an electrical signal indicating an ion concentration in a solution contacting the solution input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.