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| Number | Title | Issue Date |
| 7252251 | Method for preconcentration of organic synthetic materials derived from shredding of end-of-life durable goods Process for pre-concentration of recoverable polymer materials formed from residues from grinding consumer durable goods at the end of their lives such as automobiles, computer equipment and household appliances, consisting of treating the residue by steps in sequen... | 08/07/2007 |
| 6460788 | Method and installation for separating all categories of polymer materials The invention concerns a method for separating all categories of polymer materials derived from waste characterised by successive steps and phases, implemented in the following order: sequentially, a grinding step is followed by a cylindrical drum form fa... | 10/08/2002 |
