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:
Nov. 18, 2003
Filed:
Jan. 25, 2002
Applicant:
Inventor:
William E. Stapp, Oakland, CA (US);
Assignee:
A. S. Incorporated, Santa Rosa, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/70 ;
U.S. Cl.
CPC ...
C02F 1/70 ;
Abstract
A treatment effective for removing or substantially reducing the amount of Cr present in drinking water or wastewater is described. The method includes adding a stannous salt of a non-carbon acid, in an amount effective to reduce most or substantially all of the chromic ion in the water.