Patent · US Expired

Use of amino-substituted hydroxybenzophenones as photostable UV filters in cosmetic and pharmaceutical preparations

US6409995B1 · kind B1 · utility

20Cited by

3References

7Claims

0Family size

Assignee

BASF SE

Inventors

Thorsten Habeck · Meckenheim, DE
Frank Prechtl · Frankfurt, DE
Thomas Wunsch · Speyer, DE
Horst Westenfelder · Neustadt, DE
Sylke Haremza · Neckargemünd, DE
Thorsten Bach · Marburg, DE
Anja Spiegel · Marburg, DE

Key dates

Filing date	Apr 20, 2000
Grant date	Jun 25, 2002
Priority date	—
Expiry date	Apr 20, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/14
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Use of amino-substituted hydroxybenzophenones of the formula I in which the variables have the meanings explained in the description, as photostable UV filters in cosmetic and pharmaceutical preparations for protecting human skin or human hair from the sun's rays, alone or together with compounds which absorb in the UV region and are known per se for cosmetic and pharmaceutical preparations.

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