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:
Mar. 13, 2007
Filed:
Jul. 15, 2002
Applicants:
Alain Domard, Lyons, FR;
Eliane Espuche, Villeurbanne, FR;
Severine Despond, Caluira, FR;
Noel Cartier, Vienna, FR;
Inventors:
Alain Domard, Lyons, FR;
Eliane Espuche, Villeurbanne, FR;
Severine Despond, Caluira, FR;
Noel Cartier, Vienna, FR;
Assignee:
Ahlstrom Corporation, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 15/00 (2006.01); C02F 1/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention concerns the use of a material based on organic and/or inorganic fibres and chitosan for fixing metal ions contained in an effluent. The invention is characterised in that chitosan represents between 0.01 and 20% by dry weight of fibres and its degree of deacetylation is higher than 90%.