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. 02, 2006
Filed:
Aug. 15, 2002
Stewart T. Herman, Hellertown, PA (US);
Joseph Bartosh, Pen Argle, PA (US);
Zachary J. Lezoche, Bethlehem, PA (US);
Richard T. Sewald, Sr., Bethlehem, PA (US);
Stewart T. Herman, Hellertown, PA (US);
Joseph Bartosh, Pen Argle, PA (US);
Zachary J. Lezoche, Bethlehem, PA (US);
Richard T. Sewald, Sr., Bethlehem, PA (US);
ISG Technologies Inc., Richfied, OH (US);
Abstract
The present invention provides a water treatment apparatus and method for reducing toxicity in zinc containing acid stormwater runoff, the apparatus comprising a first filter layer of high calcium material a last filter layer comprising a drainpipe arrangement embedded within an aggregate; and at least one intermediate filter layer comprising a wood mulch material positioned between the first filter layer and said last filter layer.