The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1993
Filed:
Mar. 29, 1991
Daniel J Vaughan, Wilmington, DE (US);
Other;
Abstract
Complexes and salts of metal cations and acid anions are electrodialytically converted into insoluble hydroxides of the metal cations and acids of the anions. The conversion is effected without the electrotransport of metal cations by insolubilizing the metal cations with hydroxyl ions formed in a catholyte separated by a cation permeable membrane from an anolyte and converting anions of alkali salts formed in the catholyte to acids in the anolyte. The process comprises (a) feeding a solution of a metal complex or salt to a catholyte containing alkali cations; (b) forming hydroxyl ions in the catholyte to form insoluble metal hydroxides and alkali salts of acid anions; (c) separating the insoluble hydroxide from the catholyte; (d) feeding the separated catholyte to the anolyte whereby alkali cations are electrotransported from the anolyte to the catholyte.