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Legal status
Patent lapsed (non-payment of fees)
| (51) | INT.CL.: (2006.01) |
F22B 31/00 F22B 37/00 F23C 10/00 F23M 5/00 |
| (11) | Number of the document | 3380 |
| (13) | Kind of document | B |
| (21) | Application number | IP844 |
| (22) | Date of filing the application | 1993-08-10 |
| (41) | Date of publication of the application | 1995-02-27 |
| (45) | Date of publication of patent | 1995-08-25 |
| (30) | Number | Date | Country code |
| 309563 | 1989-02-13 | US | |
| PCT/FI90/00034 | 1990-02-05 | WO | |
| 5001506 | 1991-08-12 | SU |
| (71) |
A.AHLSTROM CORPORATION,
SF-29600 Noormarkku,
FI
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| (72) |
Aimo ASIKAINEN, FI
Gregory BEAVERS, FI Arto HOTTA, US Lasse IJAS, US Neil RASKIN, US James STONE, US David WATSON, US |
| (73) |
FOSTER WHEELER ENERGIA OY,
Sentnerikuja 2, 00440 Helsinki,
FI
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| (74) |
Marius JAKULIS - JASON,
AAA Law, A. Goštauto g. 40B, Verslo centras "Dvyniai", LT-03163 Vilnius,
LT
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| (54) | WATERWALLS IN A FLUIDIZED BED REACTOR |
| Payment date | Validity (years) | Amount | |
| 2005-07-21 | 13 | 1000.00 LTL |
| Patent lapsed (non-payment of fees) | ||
| Invalidation date | 2006-08-10 |