| (11) | Number of the document | 4015 |
| (21) | Number of the application | a 2009 0093 |
| (22) | Filing date of the application | 2009.02.20 |
| | Date of filing the request for examination | (de fond) 20.02.2009 |
| (71) | Name(s) of applicant(s), code of the country | INSTITUTIA PUBLICA UNIVERSITATEA DE STAT DIN MOLDOVA, MD; |
| (72) | Name(s) of inventor(s), code of the country | COVALIOV Victor, MD; UNGUREANU Dumitru, MD; COVALIOVA Olga, MD; |
| (73) | Name(s) of owner(s), code of the country | UNIVERSITATEA DE STAT DIN MOLDOVA, MD; |
| (54) | Title of the invention | Process for the purification of sewage waters from ammonium nitrogen |
| (67)* | Converted applicatiuon and date of conversion | s 2009 0025 2009.09.21 |
| (13) | Kind-of-document code | |
| (51) | International Patent Classification | C02F 1/58 (2006.01); C02F 101/16 (2006.01); C02F 101/38 (2006.01); C02F 103/20 (2006.01); C05B 7/00 (2006.01); C05B 9/00 (2006.01); C05F 5/00 (2006.01); |
| (19) | Country | MD |
| (45) | Date of publication of patent granting decision: | 2010.02.28 |
| (47) | Date of issuance of patent | 2010.10.31 |
| | Substantive examiner(s) | EGOROV Tamara |
| | Payment for maintenance up to the date | 2014.02.20 |
| | Date of patent termination | 2014.02.20 |
| | Date of publication of the termination of patent, with the right of restoration | 2014.09.30 |
| | Date of publication of the termination of patent, without the right of restoration | 2015.08.06 |