Differentiable spectral bar code methods and systems
US6734420B2 · kind B2 · utility
34Cited by
2References
78Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 5, 2001 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Nov 26, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Devices, systems, methods, and compositions of matter can track and/or identify a library of elements, particularly for use with fluids, particulates, cells, and the like. Signals from one or more semiconductor nanocrystals may be combined to define spectral codes. Separation of signal wavelengths within dedicated wavelength ranges or windows facilitates differentiation of spectral codes, while calibration signals within the spectral codes can avoid ambiguity. Modeling based on prior testing can help derive libraries of acceptable codes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.