Test strip with permutative grey scale calibration pattern
US7474390B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2006 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Jul 10, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8488
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A test strip for the determination of an analyte, such as glucose, in a body fluid sample (for example, a whole blood sample) includes a substrate with a working surface for receiving the body fluid sample and a reverse surface that is in opposition to the working surface. The test strip also includes a permutative grey scale calibration pattern disposed on either of the working and reverse surfaces with the permutative grey scale calibration pattern including more than one grey scale region. Moreover, the scale regions of the test strip define a grey scale permutation that uniquely corresponds to a calibration code of the test strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.