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. 16, 1978
Filed:
Aug. 06, 1976
Applicant:
Inventors:
Jerry J Svarz, La Grange, IL (US);
Frank N Kemmer, La Grange, IL (US);
Jon O Fabri, Spartanburg, SC (US);
Assignee:
Nalco Chemical Company, Oak Brook, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02B / ;
U.S. Cl.
CPC ...
210 53 ; 162 16 ; 210 54 ;
Abstract
Color is removed from paper mill waste waters by treatment with a cationic water soluble polyamine having an average molecular weight of at least 300 at a pH of 2 to 5, preferably 2.5 to 3.5, followed by precipitation with a water soluble anionic or non-ionic organic polymer having an average molecular weight of at least 10,000.
Svarz, Jerry. (1978). Color removal process (U.S. Patent No. 4089780). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4089780
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile