|
|
|
|
|
Legal status
Patent lapsed (non-payment of fees)
| (51) | INT.CL.: (2006.01) |
D06L 3/00 D21C 9/10 D21C 9/147 D21C 9/16 |
| (11) | Number of the document | 3392 |
| (13) | Kind of document | B |
| (21) | Application number | IP753 |
| (22) | Date of filing the application | 1993-07-02 |
| (41) | Date of publication of the application | 1995-01-31 |
| (45) | Date of publication of patent | 1995-08-25 |
| (30) | Number | Date | Country code |
| 261/90 | 1990-02-07 | AT | |
| 4894510 | 1991-02-06 | SU |
| (71) |
LENZING AKTIENGESELLSCHAFT,
Werkstrasse, A-4860 Lenzing,
AT
|
| (72) |
Anton HRUSCHA, AT
Walter PETER, AT Oskar HOEGLINGER, AT |
| (73) |
LENZING AKTIENGESELLSCHAFT,
Werkstrasse, A-4860 Lenzing,
AT
|
| (74) |
dr. Nijolė Viktorija MICKEVIČIENĖ,
Panerių g. 79a, LT-48425 Kaunas,
LT
|
| (54) | PROCESS FOR BLEACHING OF CELLULOSE FIBRE EXCLUDING THE USE OF CHLORINE |
| Payment date | Validity (years) | Amount | |
| 1999-06-24 | 7 | 560.00 LTL |
| Patent lapsed (non-payment of fees) | ||
| Invalidation date | 2000-07-02 |