Method of identifying analytes
US5885844A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1996 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Aug 5, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0256
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of identifying an analyte, using a chemical sensor (e.g., a piezoelectric crystal oscillator) which produces an output frequency responsive to different analytes by a characteristic change in the output frequency. The sensor is exposed to a step change (to) in concentration of the analyte and the resulting frequency characteristic measured. An expression for this characteristic is derived consisting of two exponential functions (F, S), one (F) derived from the early part of the frequency characteristic and the other (S) from the latter part. The four parameters (A.sub.2, A.sub.3, A.sub.4, A.sub.5) resulting from the functions so obtained are characteristic of the particular analyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.