0001104659-05-049477 15-12G 1 20051021 20051021 20051021 AEROGEN INC 0001039160 3841 330488580 DE 1231 15-12G 34 000-31913 051148337 2071 STIERLIN COURT MOUNTAIN VIEW CA 94043 650 864-7300 2071 STIERLIN COURT MOUNTAIN VIEW CA 94043 15-12G 1 a05-18713_11512g.htm 15-12G