Method of deionising and clarifying the aqueous medium used...

Details Method of deionising and clarifying the aqueous medium used... Method of deionising and clarifying the aqueous medium used...

2007-11-06

2007-11-06

Drodge, Joseph (Department: 1723)

Liquid purification or separation

Processes

Ion exchange or selective sorption

C205S682000, C205S684000, C219S069140, C204S522000, C204S536000

Reexamination Certificate

active

10488090

ABSTRACT:
Deionisation and clarification process of the aqueous medium used in an electroerosion machine and product for this process, where the electroerosion machines are comprised of a purification circuit for this aqueous medium, which includes an ion exchange phase between some cationic and anionic resins with the aqueous dielectric medium, which has a conductivity of less than 40 μS/cm, and to which a solution of oxalic acid and phosphoric acid in distilled/deionised water is added in the approximate proportion of oxalic acid between 0.18 and 0.035 moles and phosphoric acid between 1.28 and 2.5 moles per liter of solution.

REFERENCES:
patent: 2645635 (1953-07-01), Walton
patent: 4584450 (1986-04-01), Inoue
patent: 4683074 (1987-07-01), Malik et al.
patent: 4737541 (1988-04-01), Stavenger et al.
patent: 6503875 (2003-01-01), Olson et al.
patent: 2003/0013387 (2003-01-01), Tsai et al.
Provisional Application 60/305,314, Tsai et al, filed Jul. 13, 2001, Specification and Claims.
U.S. Appl. No. 60/305,314 , Tsai et al, filed Jul. 13, 2001, Specification and Claims.

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