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. 18, 1989
Filed:
Apr. 30, 1984
Applicant:
Inventors:
Alban Timmons, North Humberside, GB;
Richard R Davidson, Cambridge, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; B01F / ; B01J / ; B01D / ;
U.S. Cl.
CPC ...
252181 ; 210702 ; 210716 ; 210725 ; 210728 ; 210734 ; 252303 ;
Abstract
An aqueous composition for conditioning an aqueous system, for example a sewage slurry, comprises an alkaline earth metal hydroxide, e.g. lime, and an anionic oligomeric polyelectrolyte, e.g. a salt of polyacrylic acid which composition has at least 40% by weight of particulate solid materials. Other components may include a weighting agent, e.g. calcium carbonate, a cationic flocculant, e.g. a polyacrylamide, and a base such as sodium hydroxide.