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Bibliographic data
Indications of the International Patent Classification (IPC)
(51) INT.CL.: (2006.01) C11D 3/12
Patent
(11) Number of the document 2111
(13) Kind of document B
(21) Application number RP523
(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
PCT application
(86) Number 1454256
Date 1985-12-02
Priority applications
(30) Number Date Country code
34 44 311.8 1984-12-05 DE
Applicant
(71) Degussa Aktiengesellschaft, Weissfrauenstrasse 9, 6000 Frankfurt (Main) 1, DE
Inventors
(72) Manfred DIEHL, DE
Roland BERGMANN, DE
Guenter STADTMUELLER, DE
Sigrid DIENER, DE
Grantee
(73) Degussa Aktiengesellschaft, Weissfrauenstrasse 9, 6000 Frankfurt (Main) 1, DE
Attorney or representative
(74) Rita LAURINAVIČIŪTĖ, Gedimino pr. 45-6, LT-01109 Vilnius, LT
Title
(54)
Last renewal fee
Payment date Validity (years) Amount
1998-04-30 8 250.00 USD
Legal status
Patent lapsed (non-payment of fees)
Invalidation date 1999-05-06
Last update date 2006-10-12