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:
Feb. 10, 2009
Filed:
Aug. 02, 2005
Applicants:
Michael W. Wismer, Lino Lakes, MN (US);
Richard Woodling, Boulder Creek, CA (US);
James C. Day, St. Paul, MN (US);
Inventors:
Michael W. Wismer, Lino Lakes, MN (US);
Richard Woodling, Boulder Creek, CA (US);
James C. Day, St. Paul, MN (US);
Assignee:
Siemens Water Technologies Holding Corp., Warrendale, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Wastewater streams from semiconductor processing operations are treated to reduce the concentration therein of one or more metal species to a satisfactory level. The disclosed systems and technique utilize complexing ion exchange media to treat the wastewater streams having a significant concentration of oxidizing species.