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:
Aug. 22, 1995
Filed:
Feb. 14, 1994
Applicant:
Inventors:
John A Stott, Warrington, GB;
John G Allen, Warrington, GB;
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C02F / ;
U.S. Cl.
CPC ...
210726 ; 210727 ; 210915 ;
Abstract
A process for the treatment of acidic fluoride-containing solutions to neutralize them and to remove fluoride ion in the form of a readily filterable precipitate which comprises mixing the acidic solution with a suspension of an alkaline earth metal oxide or hydroxide, wherein a flocculating agent is incorporated in the acidic solution before mixing thereof with the alkaline earth metal oxide or hydroxide.