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:
Sep. 25, 2007
Filed:
Jan. 14, 2005
Applicants:
Gopalakrishnarao Parthasarathy, Hyderabad, IN;
Bojja Sreedhar, Hyderabad, IN;
Boyapati Manoranjan Choudhary, Hyderabad, IN;
Inventors:
Gopalakrishnarao Parthasarathy, Hyderabad, IN;
Bojja Sreedhar, Hyderabad, IN;
Boyapati Manoranjan Choudhary, Hyderabad, IN;
Assignee:
Council of Scientific and Industrial Research, New Delhi, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/28 (2006.01); C02F 1/70 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to the development of an improved methodology for adsorption and subsequent reduction of hexavalent chromium aimed at the total removal of hexavalent chromium in water, which comprises, reacting dichromate solutions with natural ferrous-saponite clays at temperature 50 to 200° C. for the period of 1 to 3.0 hours.