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:
Apr. 22, 2003
Filed:
Jul. 03, 2001
Applicant:
Inventor:
Giuseppina Cerea, Rozzano, IT;
Assignee:
Vomm Chemipharma S.r.l., Milan, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B09C 1/08 ;
U.S. Cl.
CPC ...
B09C 1/08 ;
Abstract
A method of remediating soil that contains heavy metals comprises the steps of removing and sieving heavy metal-containing soil to separate stones and gravel, and treating the sieved soil, in a thin layer kept in a strongly turbulent state, with a solution of an alkali sulfide at a temperature of at least 50° C.