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. 10, 2001
Filed:
Aug. 14, 2000
Applicant:
Inventors:
Kristine S. Salmen, Naperville, IL (US);
Angela S. Kowalski, Lisle, IL (US);
E. H. Kelle Zeiher, Naperville, IL (US);
William J. Ward, Glen Ellyn, IL (US);
Assignee:
Nalco Chemical Company, Naperville, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/62 ;
U.S. Cl.
CPC ...
C02F 1/62 ;
Abstract
The simultaneous precipitation of soluble heavy metal ions from semiconductor wastewater containing abrasive solids and enhancement of microfilter operation is achieved through the addition of an effective amount of a water-soluble polymer containing dithiocarbamate functionalities to the wastewater.
Salmen, Kristine. (2001). Composition and method for simultaneously precipitating metal ions from semiconductor wastewater and enhancing microfilter operation (U.S. Patent No. 6258277). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6258277
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile