Method for distinguishing cosmetic sticks containing water
US5270209A · kind A · utility
4Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1991 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Jun 28, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N31/221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and article is provided for distinguishing cosmetic sticks, especially lipsticks, containing water from those where water is absent. The method involves applying a test stick to a test paper or fabric impregnated with an indicator compound capable of changing color, forming a smear of the stick thereon and observing any change in color around an area of the smear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.