Patent · US Expired

Skin-coloring powder mixture

US6399044B1 · kind B1 · utility

0Cited by

4References

17Claims

0Family size

Assignee

Merck Patentgesellschaft · DE

Inventors

Thekla Kurz · Darmstadt, DE
Sabine Hitzel · Messel, DE
Roland Martin · Hamburg, DE
Ralf Emmert · Bayonne, US

Key dates

Filing date	Jan 6, 1997
Grant date	Jun 4, 2002
Priority date	—
Expiry date	Jan 6, 2017

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61Q19/04
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention related to powder mixtures containing formaldehyde- and/or formic acid-releasing compounds which have skin-tanning properties, which powder mixtures contain an agent which forms sulphite ions and, if appropriate, a stabilizer, and to the preparation and use of these powder mixtures for manufacturing cosmetic or pharmaceutical preparations.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.