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Legal status
Patent expired
| (51) | INT.CL.: (2006.01) |
B01J 23/16 C07D 213/00 |
| (11) | Number of the document | 2108 |
| (13) | Kind of document | B |
| (21) | Application number | RP520 |
| (22) | Date of filing the application | 1993-05-06 |
| (41) | Date of publication of the application | |
| (45) | Date of publication of patent | 1993-07-15 |
| (86) | Number | 1189327 |
| Date | 1982-02-25 |
| (30) | Number | Date | Country code |
| 31 07 755.2 | 1981-02-28 | DE |
| (71) |
Degussa Aktiengesellschaft,
Weissfrauenstrasse 9, 6000 Frankfurt (Main) 1,
DE
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| (72) |
Helmut BESCHKE, DE
Heinz FRIEDRICH, DE Johannes HEILOS, DE |
| (73) |
Degussa Aktiengesellschaft,
Weissfrauenstrasse 9, 6000 Frankfurt (Main) 1,
DE
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| (74) |
Rita LAURINAVIČIŪTĖ,
Gedimino pr. 45-6, LT-01109 Vilnius,
LT
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| (54) |
| Payment date | Validity (years) | Amount | |
| 1996-04-18 | 6 | 250.00 USD |
| 1999-05-06 |
| Patent expired | ||
| Invalidation date | 1997-02-25 |