Production of hollow ceramic membranes by electrophoretic...

Details Production of hollow ceramic membranes by electrophoretic... Production of hollow ceramic membranes by electrophoretic...

2007-02-27

2007-02-27

Mayekar, Kishor (Department: 1753)

Chemistry: electrical and wave energy

Processes and products

Electrophoresis or electro-osmosis processes and electrolyte...

C204S484000, C204S491000, C429S006000

Reexamination Certificate

active

10249735

ABSTRACT:
The present invention provides methods for producing hollow ceramic membranes by electrophoretic deposition. The hollow ceramic membranes may have a small cross-sectional area of about 1.0×10−5mm2to about 25 mm2. The cross-sectional configuration of the hollow ceramic membranes may be any geometry such as circular, square, rectangular, triangular or polygonal. The hollow ceramic membranes produced by the methods of the present invention may have multiple layers but always the innermost layer, or the first deposited layer is porous and made by electrophoretic deposition. Subsequent layers may be porous or non porous and deposited before or after sintering the first layer. If it is deposited after sintering, it may require additional sintering steps. Additional layers may be deposited by further electrophoretic deposition, sol-gel coating, dip coating, vacuum casting, brushing, spraying or other known techniques.

REFERENCES:
patent: 5002647 (1991-03-01), Tanabe et al.
patent: 5366687 (1994-11-01), Dalzell et al.
patent: 5590387 (1996-12-01), Schmidt et al.
patent: 5700361 (1997-12-01), Shiomitsu et al.
patent: 6270642 (2001-08-01), Basu et al.

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