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Legal status
Patent lapsed (non-payment of fees)
| (51) | INT.CL.: (2006.01) |
C03C 8/00 C11D 3/12 |
| (11) | Number of the document | 3003 |
| (13) | Kind of document | B |
| (21) | Application number | IP209 |
| (22) | Date of filing the application | 1992-08-28 |
| (41) | Date of publication of the application | 1994-03-25 |
| (45) | Date of publication of patent | 1994-08-25 |
| (30) | Number | Date | Country code |
| 1350/89 | 1989-04-10 | CH | |
| 4743562 | 1990-04-09 | SU |
| (71) |
LONZA AG,
Gampel/Wallis, 4002 Basel,
CH
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| (72) |
Uwe GILTZAU, DE
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| (73) |
MARTINSWERK GmbH,
Koelner Strasse 110, 50127 Bergheim,
DE
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| (74) |
Vytautas DOVYDĖNAS,
V. Grybo g. 41-38, LT-10320 Vilnius,
LT
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| (54) | PROCESS FOR PREPARING POWDERED 4A TYPE ZEOLITE |
| Payment date | Validity (years) | Amount | |
| 2001-07-25 | 10 | 800.00 LTL |
| Patent lapsed (non-payment of fees) | ||
| Invalidation date | 2002-08-28 |