Patent Document ID: 20050250843
Application ID: 10516320
Patent Flag: 0

Claim One:
1. A pharmaceutical composition comprising the following ingredients (A) and (B): Ingredient (A): An alkyl ether derivative represented by the following formula: wherein R 1 represents a substituted or unsubstituted heterocyclic group; R 2 represents a hydrogen atom or a hydroxyl group; R 3 and R 4 , which may be the same or different, each represents a substituted or unsubstituted alkyl group, or R 3 and R 4 , taken conjointly with the nitrogen atom to which R 3 and R 4 are linked, form a substituted or unsubstituted cyclic amino group; m represents an integer of 1 to 5; and n represents an integer of 1 to 6; or a salt thereof, Ingredient (B): A compound having an acetylcholine esterase inhibitory activity or a salt thereof, which is different from ingredient (A).