Liquid purification or separation – Recirculation – Of filtrate
Reexamination Certificate
2007-12-18
2007-12-18
Barry, Chester T. (Department: 1724)
Liquid purification or separation
Recirculation
Of filtrate
C210S263000, C210S912000, C210S688000
Reexamination Certificate
active
11203264
ABSTRACT:
The present invention relates to a process for the preparation of arsenic free water and an apparatus therefor. The present invention also relates to a porous ceramic useful for pressure filtration in order to produce arsenic free water. The present invention particularly relates to a process for preparing arsenic free (<10 ppb) water from arsenic contaminated ground water and apparatus therefor.
REFERENCES:
patent: 3674686 (1972-07-01), Brimmer et al.
patent: 4786527 (1988-11-01), Fejes et al.
patent: 5227053 (1993-07-01), Brym
patent: 5480524 (1996-01-01), Oeste
patent: 5556545 (1996-09-01), Volchek et al.
patent: 5769961 (1998-06-01), Peters et al.
patent: 6491822 (2002-12-01), Alper
Bandyopadhya Sibdas
Ghosh Bishnupada
Kundu Dipali
Maiti Himadri Sekhar
Roy Somendra Nath
Council of Scientific and Industrial Research
Nixon & Vanderhye P.C.
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