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. 25, 1989
Filed:
Oct. 11, 1988
Applicant:
Inventor:
Gerard R Rose, Park Ridge, IL (US);
Assignee:
Nalco Chemical Company, Naperville, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210669 ; 210670 ; 210679 ; 210694 ; 210917 ; 210928 ;
Abstract
Carbon absorbents are used to remove color bodies from paper mill waste waters. A preferred embodiment of the process utilizes pretreatment of the paper mill waste waters with cationic flocculants.