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:
Sep. 14, 1976
Filed:
Aug. 08, 1975
Applicant:
Inventors:
Susumo Otsuki, Shin-nanyo, JA;
Junji Arika, Shin-nanyo, JA;
Mitsunobu Kashibe, Shin-nanyo, JA;
Kosuke Takeshige, Shin-nanyo, JA;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ; C01D / ; C01D / ;
U.S. Cl.
CPC ...
423185 ; 2332 / ; 423421 ; 423497 ;
Abstract
An alkali carbonate containing a fluorine compound is purified by dissolving the crude alkali carbonate in an aqueous solution or suspension of magnesium bicarbonate in order to transfer the fluorine impurity into the resulting colloidal flocculated precipitate whereby the fluorine is substantially separated from the aqueous solution of the alkali carbonate.