Application of Wayne T. Barrett, Moises G. Sanchez and Milton C. Vanik

RICH, Judge.

This appeal is from the decision of the Patent Office Board of Appeals affirming the examiner’s rejection of claim 6 in appellants’ application serial No. 613,-060, filed January 5, 1967, to reissue patent No. 3,164,554, granted January 5, 1965, on an application which was a eontinuation-in-part of application serial No. 693,511, filed October 31, 1957. We reverse.

THE INVENTION

Claim 6 is for a process for producing thoria sol, which is a colloidal solution of thorium dioxide, by electrodialysis of an aqueous solution of thorium salts. According to the specification, the particles…