Liquid purification or separation – Particulate material type separator – e.g. – ion exchange or... – With rehabilitation means
Reexamination Certificate
2007-12-11
2007-12-11
Barry, Chester T. (Department: 1724)
Liquid purification or separation
Particulate material type separator, e.g., ion exchange or...
With rehabilitation means
C210S288000
Reexamination Certificate
active
11064902
ABSTRACT:
A method for treating metal-working fluid comprises reducing a concentration in the metal-working fluid of at least one metal by passing the metal-working fluid through an ion-exchange filter. The at least one metal may comprise cobalt or one or more other metal(s). The ion-exchange filter may include an ion-exchange resin, and the resin may comprise a sulfonated divinyl-benzene-cross-linked polystyrene ion-exchange resin. The metal-working fluid may be recirculated through the ion-exchange filter, from a holding vessel, from a sump or reservoir, or from any other container of the metal-working fluid.
REFERENCES:
patent: 1952281 (1934-03-01), Ranque
patent: 3173273 (1965-03-01), Fulton
patent: 3208229 (1965-09-01), Fulton
patent: 4046492 (1977-09-01), Inglis
patent: 4240261 (1980-12-01), Inglis
patent: 4339926 (1982-07-01), Moretti et al.
patent: 4492636 (1985-01-01), Burke
patent: 4518847 (1985-05-01), Horst et al.
patent: 4539125 (1985-09-01), Sato
patent: 4636317 (1987-01-01), Lewis
patent: 4798669 (1989-01-01), Bachhofer et al.
patent: 4865724 (1989-09-01), Brandt et al.
patent: 4871450 (1989-10-01), Goodrich et al.
patent: 4871779 (1989-10-01), Killat et al.
patent: 5447642 (1995-09-01), Schenach
patent: 5545798 (1996-08-01), Elliott
patent: 5942128 (1999-08-01), Fortier
patent: 5948244 (1999-09-01), Fortier
patent: 61072099 (1986-04-01), None
E. C. Hill, “Microbial aspects of health hazards from water based metal working fluids”, Tribology International vol. 16 No. 3 p. 138 (1983).
Metals Handbook 9ed. vol. 16 Machining “Recycling and fluid cleaning” p. 129 (1989).
Birran Michael D.
Gonzalez Anthony H.
Jammal Michel
Alavi David S.
Barry Chester T.
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