On-line production process of sand presenting a controlled methylene blue value
US8561488B2 · kind B2 · utility
1Cited by
3References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2007 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Dec 22, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/27
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An embodiment of the invention provides a production process of sand including the extraction of sand from a quarry; the periodic, on-line and automated withdrawal of a sample of sand; and the automated measurement of the methylene blue value on the sample of sand. Another embodiment of the invention provides a production line of sand including means of extraction of sand from a quarry; periodic and automated means of withdrawal of a sample of sand; and automated means of measuring the methylene blue value for the sample of sand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.