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Extract from the Register of European Patents

EP About this file: EP0044970

EP0044970 - Use of etherified 2-(4-hydroxybenzylidene)-gamma-butyrolactones as light protectants [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  04.05.1984
Database last updated on 15.07.2024
Most recent event   Tooltip04.05.1984No opposition filed within time limitpublished on 04.07.1984 [1984/27]
Applicant(s)For all designated states
BASF Aktiengesellschaft
Carl-Bosch-Strasse 38
67063 Ludwigshafen / DE
[N/P]
Former [1982/05]For all designated states
BASF Aktiengesellschaft
Carl-Bosch-Strasse 38
D-67063 Ludwigshafen / DE
Inventor(s)01 / Thoemel, Frank, Dr.
Leberstrasse 17
D-6940 Weinheim / DE
02 / Hoffmann, Werner, Dr.
Ringstrasse 11 C
D-6701 Neuhofen / DE
03 / Degner, Dieter, Dr.
Kurpfalzstrasse 8
D-6701 Dannstadt-Schauernheim / DE
[1982/05]
Application number, filing date81105199.404.07.1981
[1982/05]
Priority number, dateDE1980302850226.07.1980         Original published format: DE 3028502
[1982/05]
Filing languageDE
Procedural languageDE
PublicationType: A2 Application without search report 
No.:EP0044970
Date:03.02.1982
Language:DE
[1982/05]
Type: A3 Search report 
No.:EP0044970
Date:19.05.1982
Language:DE
[1982/20]
Type: B1 Patent specification 
No.:EP0044970
Date:22.06.1983
Language:DE
[1983/25]
Search report(s)(Supplementary) European search report - dispatched on:EP17.03.1982
ClassificationIPC:A61K7/42
[1982/05]
CPC:
C07D307/58 (EP); A61K8/4973 (EP); A61Q17/04 (EP)
Designated contracting statesCH,   DE,   FR,   GB,   IT,   LI [1982/05]
TitleGerman:Verwendung von verätherten 2-(4-Hydroxybenzyliden)-gamma-butyrolactonen als Lichtschutzmittel[1982/05]
English:Use of etherified 2-(4-hydroxybenzylidene)-gamma-butyrolactones as light protectants[1982/05]
French:Utilisation de 2-(4-hydroxybenzylidène)-gamma-butyrolactones éthérifiés en tant qu'agents de protection contre la lumière[1982/05]
Examination procedure22.10.1981Examination requested  [1982/05]
24.11.1982Despatch of communication of intention to grant (Approval: )
22.12.1982Communication of intention to grant the patent
29.01.1983Fee for grant paid
29.01.1983Fee for publishing/printing paid
Opposition(s)23.03.1984No opposition filed within time limit [1984/27]
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Documents cited:Search[AD]DD112884  ;
 [A]DE2160136  (INT FLAVORS & FRAGRANCES INC [US])
 [AD]  - Journal of Organic Chemistry, Band 24, Januar 1959 Easton (US) H. ZIMMER et al.: "Substituted gamma-Lactones.I.Preparation of alfa-Substituted gamma-Butyrol Actones by Condensation of gamma-Butyrolactone with Aldehydes. Hydrogenation of the Condensation Products" seiten 28-32
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.