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:
May. 08, 2007
Filed:
Jan. 13, 2006
Applicants:
Daniel Alfred Boryta, Cherryville, NC (US);
Teresita Frianeza Kullberg, Gastonia, NC (US);
Anthony Michael Thurston, Edmond, OK (US);
Inventors:
Daniel Alfred Boryta, Cherryville, NC (US);
Teresita Frianeza Kullberg, Gastonia, NC (US);
Anthony Michael Thurston, Edmond, OK (US);
Assignee:
Chemetall Foote Corporation, , NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01D 15/08 (2006.01); C01B 31/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
Metal carbonates that are insoluble in water but that have a corresponding metal biocarbonate salt that is more than 75% by weight soluble in water are purified by preparing an aqueous slurry of the metal carbonate: introducing carbon dioxide gas to form a corresponding metal biocarbonate solution and heating that solution to form a purified metal carbonate and precipitate it.