Patent · US Active

Stable soluble salts of phenylbenzimidazole sulfonic acid at PHS at or below 7.0

US8440172B2 · kind B2 · utility

10Cited by

2References

14Claims

0Family size

Assignee

SYMRISE AG · DE

Inventors

William Johncock · Reinbek, DE
Jürgen Claus · Waiblingen, DE

Key dates

Filing date	Jul 9, 2007
Grant date	May 14, 2013
Priority date	—
Expiry date	May 20, 2028

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61Q17/04
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention concerns preparations, particularly cosmetic or pharmaceutical/dermatological preparations, containing phenylbenzimidazole sulfonic acid (i.e. 2-phenylbenzimidazole-5-sulfonic acid) neutralised with basic amino acids such as arginine, lysine, ornithine and histidine so that the pH of the preparation can be at or below 7.0 without incurring crystallization of the phenylbenzimidazole sulfonic acid.

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