Filter bottle

Details Filter bottle Filter bottle

1988-11-03

1990-07-03

Huppert, Michael S.

Dispensing

With filter

Associated with vent passage

222420, 21032164, 604126, B65D 558, B01D 3500

Patent

active

049383892

ABSTRACT:
A multidose liquid dispenser for maintaining the sterility of solutions without a preservative has been developed. The dispenser includes a filter assembly having a hydrophobic filter and a hydrophilic filter in tandem with the hydrophobic filter located near the dispensing tip. The use of the hydrophobic exterior filter and the hydrophilic interior filter permits excellent liquid flow while precluding the growth of bacteria on the filter. The inability of the bacteria to attach to the exterior hydrophobic filter prevents clogging of the pores.

REFERENCES:
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patent: 4441996 (1984-04-01), Hurst
patent: 4443336 (1984-04-01), Bennethum
patent: 4463880 (1984-08-01), Kramer et al.
patent: 4533068 (1985-08-01), Meierhoefer
patent: 4764274 (1988-08-01), Miller
patent: 4767016 (1988-08-01), Cook, Jr. et al.
patent: 4811866 (1989-03-01), Golias

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