Patent ID: 7404848

Claim:
A humidifier comprising: a plurality of moisture permeable humidifying membranes; and a plurality of gas separators each having one or two channels opened on at least one side in a direction of lamination, through which at least one of a dry gas and a wet gas is caused to flow; wherein one of said humidifying membranes, one of said gas separators, another one of said humidifying membranes, and another one of said gas separators are repeatedly laminated one over another in this order, or one of said gas separators, one of said humidifying membranes, and another one of said gas separators are repeatedly laminated one over another in this order; each of said gas separators has a frame-shaped portion surrounding said one or two channels; and those portions of said humidifying membranes which, when laminated, are arranged to face the whole area of said frame-shaped portions of said gas separators are filled with a resin.