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. 06, 1980
Filed:
Jun. 20, 1978
Applicant:
Inventors:
Assignee:
Toyo Soda Manufacturing Co. Ltd., Yamaguchi, JP;
Primary Examiner:
Int. Cl.
CPC ...
C02C / ;
U.S. Cl.
CPC ...
210 51 ; 210 52 ; 210 67 ;
Abstract
A treatment for improving the filtering characteristics of the sludge is attained by adding a magnesium compound with or without an iron salt and further adding a base to maintain the pH of the sludge at higher than 9.0.