Liquid purification or separation – Filter – With central pervious tubular receiver
Reexamination Certificate
2005-03-01
2005-03-01
Popovics, Robert James (Department: 1724)
Liquid purification or separation
Filter
With central pervious tubular receiver
C210S483000, C210S489000, C210S497010
Reexamination Certificate
active
06860394
ABSTRACT:
The multiple-tube filter proposed consists of at least one perforated filter element (15) whose outside surface has grooves (2) in a spiral round it, the surface between the grooves (2) preferably curving outwards in a circular arc.
REFERENCES:
patent: 3326382 (1967-06-01), Bozek et al.
patent: 4443346 (1984-04-01), Müller
patent: 4473472 (1984-09-01), Mueller
patent: 4604201 (1986-08-01), Müller
patent: 5435911 (1995-07-01), Höhle
patent: 6041944 (2000-03-01), Meier
patent: 0 066 921 (1982-12-01), None
patent: WO 9704850 (1997-02-01), None
Mueller Patrick
Schumacher Ivo
DRM, Dr. Mueller AG
Popovics Robert James
Striker Michael J.
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