Microstructure et son procédé de fabrication- Brevets EP1900855 (A2)

Microstructure et son procédé de fabrication

N° de brevet:	EP1900855 (A2)
Date de publication:	2008-03-19
Inventeur(s):	HATANAKA YUSUKE [JP];TOMITA TADABUMI [JP];HOTTA YOSHINORI [JP];UESUGI AKIO [JP];
Demandeur(s):	FUJIFILM CORP [JP];
Classification:	C25D11/12;C25D11/24;
N° de demande:	EP20070017291 20070904
Numéro(s) de priorité:	JP20060250773 20060915

Disclosed is a microstructure comprising an aluminum anodized film bearing through micropores, wherein a surface of the microstructure is covered with a protective film for preventing hydration of the aluminum anodized film. The microstructure may be used as a porous alumina membrane filter excellent in filtration rate and its stability with time.