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:
Feb. 04, 1997
Filed:
Nov. 22, 1994
Philippe Pichat, 75004 Paris, FR;
Other;
Abstract
Disclosed is a method for the manufacture of a solid that is practically insoluble in water and non-pollutant. pollutant. This method comprises a step in which there are mixed, in an aqueous medium, at least two compounds in order to obtain a paste. According to this method, one of the compounds or first compound comprises hydrates of alkaline earth oxides and another compound or second compound comprises hydrates of heavy metal oxides; the free water contained in the paste or liquid is present in the liquid in a proportion, in terms of quantities, of 20% to 60% by weight of the total mixture; the solid obtained being substantially without silicates and aluminates. The disclosed method is applicable, in particular, to waste treatment and to the field of civil engineering and construction.