Jacobson, Price, Holman & Stern
Modular hollow-fiber filter unit
 A modular hollow-fiber filter unit (10; 100; 200) for use in a water purifier includes a jacket member (24; 104; 204) surrounding a bundle (20) of hollow fibers (22; 106; 206) within a housing (12; 102; 202). The jacket member has one or more air-vent passages or pockets (30) defined by air-pervious, liquid-impermeable wall members (42; 64) to vent air bubbles accumulated within the housing (12; 102; 202) of the filter unit. 
NOK Corporation
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Masaharu Tomotaka
Saito Mitsuhashi