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:
Jul. 13, 1976
Filed:
Aug. 25, 1975
Applicant:
Inventor:
Alan C Shaw, St. Catharines, CA;
Assignee:
The Ontario Paper Company Limited, Thorold, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01D / ; C01F / ;
U.S. Cl.
CPC ...
423421 ; 423629 ;
Abstract
Sodium carbonate is formed by reaction between particulate sodium aluminate in solid form, and carbon dioxide and water vapor in gaseous form. The sodium carbonate is readily separated from by-product hydrated alumina for recovery in pure form, or the dry product of the reaction may be employed directly where a dry sodium carbonate feed is desired, with the hydrated alumina being filtered off prior to further processing.