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:
Jan. 12, 1999
Filed:
Jan. 14, 1997
Applicant:
Inventors:
John D Rafter, Providence, RI (US);
Joseph W Grenier, North Providence, RI (US);
Raymond P Denkewicz, Jr, Warwick, RI (US);
Assignee:
Fountainhead Technologies, Inc., Smithfield, RI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C02F / ;
U.S. Cl.
CPC ...
210754 ; 210753 ; 210759 ; 210764 ; 422 28 ; 422 37 ;
Abstract
A method of purifying water includes contacting water containing an oxide of chlorine, such as chlorine dioxide, chlorite, or chlorate, with a water purification composition that includes a Group 11 or Group 12 metal such as silver, copper, or zinc.