Patent · US Expired

Galenical formulation

US7345090B2 · kind B2 · utility

2Cited by

5References

28Claims

0Family size

Assignee

MERCK PATENT GESELLSCHAFT MIT BESHRANK TER HAFTUNG · DE

Inventors

Frank Pfluecker · Darmstadt, DE
Joachim Buenger · Groß-Umstadt, DE
Hans-Juergen Driller · Groß-Umstadt, DE
Herwig Buchholz · Frankfurt am Main, DE
Ralf Rosskopf · Munster, DE

Key dates

Filing date	Apr 28, 2004
Grant date	Mar 18, 2008
Priority date	—
Expiry date	Sep 17, 2024

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/522
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention relates to compounds of the formula Iwhere R1, R2, R3, R4 and R5 have the meanings given in claim 1. The compound is suitable in particular for use in skin care compositions. They protect, firstly, against harmful oxidation reactions and, secondly, also act as UV filters.

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