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Legal status
Patent lapsed (non-payment of fees)
| (51) | INT.CL.: (2006.01) |
B01D 47/00 |
| (11) | Number of the document | 4798 |
| (13) | Kind of document | B |
| (21) | Application number | 99-063 |
| (22) | Date of filing the application | 1999-06-04 |
| (41) | Date of publication of the application | 2000-12-27 |
| (45) | Date of publication of patent | 2001-05-25 |
| (71) |
Vilniaus Gedimino technikos universitetas,
Saulėtekio al. 11, 2040 Vilnius,
LT
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| (72) |
Pranas BALTRĖNAS, LT
Algimantas BAKAS, LT Aušra JAKŠTAITĖ, LT |
| (73) |
Vilniaus Gedimino technikos universitetas,
Saulėtekio al. 11, 2040 Vilnius,
LT
|
| (74) |
| (54) | A BIOLOGICAL AIR PURIFICATION DEVICE |
| Payment date | Validity (years) | Amount | |
| 2003-06-02 | 5 | 400.00 LTL |
| Patent lapsed (non-payment of fees) | ||
| Invalidation date | 2004-06-04 |