Cosmetic pencil
US4334546A · kind A · utility
4Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1980 |
| Grant date | Jun 15, 1982 |
| Priority date | — |
| Expiry date | Sep 8, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/872
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A cosmetic pencil for use in the topical application of eye shadow, eye liner, lipstick, or the like. The pencil comprises an outer sheath or barrel and an inner core of a cosmetic composition. The barrel is composed of polyethylene and contains from 5% to 20% by weight of hydrogenated castor oil. The cosmetic pencil can be readily sharpened through use of a conventional pencil sharpened, and the addition of the hydrogenated castor oil provides the barrel with increased toughness, easier sharpening characteristics, as well as substantially reducing stress cracking of the barrel at elevated temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.