Method and apparatus for impurity detection
US6629039B1 · kind B1 · utility
3Cited by
11References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2000 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Apr 27, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/74
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus is provided for detecting an impurity in a sample where an index can be calculated to assess purity in the presence of n major components with signal averaging or noise-filtering automatically built-in. The method and apparatus can be applied to liquid chromatography impurity detection using UV-VIS spectrophotometry based on robust matrix algebra representing the entire spectral space generated by the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.