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:
Jun. 30, 2009
Filed:
May. 28, 2004
Thorsten Buddenberg, Krefeld, DE;
Holger Herrmann, Duisburg, DE;
Hartmut Pawel, Porta Westfalica, DE;
Otto Schroers, Krefeld, DE;
Wolfgang Hoeppner, Bremen, DE;
Volker Hartmann, Thedinghausen, DE;
Thorsten Buddenberg, Krefeld, DE;
Holger Herrmann, Duisburg, DE;
Hartmut Pawel, Porta Westfalica, DE;
Otto Schroers, Krefeld, DE;
Wolfgang Hoeppner, Bremen, DE;
Volker Hartmann, Thedinghausen, DE;
Stockhausen GmbH & Co. KG, Krefeld, DE;
Detlef Hegemann GmbH & Co KG, Bremen, DE;
Abstract
The invention relates to a method for the accelerated dehydration of sludges in sludge disposal areas, especially of sludges from rivers and harbors, by the exclusive use of anionic polymer flocculants and the use of materials obtained according to the inventive method.