Pigmented composition
US4624273A · kind A · utility
5Cited by
2References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1984 |
| Grant date | Nov 25, 1986 |
| Priority date | — |
| Expiry date | Nov 13, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/872
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Cosmetic pencils having cores consisting of water-set mixtures of plaster of paris, mica or other laminar material and pigment or color are disclosed. The mixtures are between 30 wgt % and 75 wgt % plaster of paris. The pencils may be made either by pouring water-based slurries of the mixtures into hollow pencil cases, or by introducing pre-formed cores into two-part cases which are subsequently secured together. The pencils can be easily sharpened and may contain a wide range of additives such as preservatives and bacterioistats.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.