Method of treating a consumable product and packaging for consumable products to indicate the presence of contamination
US4847066A · kind A · utility
15Cited by
5References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1987 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Feb 2, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N31/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is described for treating consumable products, such as foods, drugs or dietary supplements, for example drugs enclosed in capsules, to detect contamination. A colorimetric indicator, which can react with a contaminating substance such as cyanide, is incorporated into the consumable product or the packaging for the product. When the indicator comes in contact with the contaminating substance, a readily detectable color signal is produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.