Differentiable spectral bar code methods and systems
US7559481B2 · kind B2 · utility
6Cited by
53References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 23, 2004 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Apr 22, 2026 |
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.