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Extract from the Register of European Patents

EP About this file: EP0000043

EP0000043 - Bisphosphinic acid anhydrides and process for its preparation [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  14.09.2016
Database last updated on 10.12.2024
Most recent event   Tooltip14.09.2016No opposition filed within time limit 
Applicant(s)For all designated states
HOECHST AKTIENGESELLSCHAFT
65926 Frankfurt am Main / DE
[N/P]
Inventor(s)01 / Kleiner, Hans-Jerg, Dr.
Altkönigstrasse 11a
D-6242 Kronberg/Taunus / DE
02 / Dürsch, Walter, Dr.
In der Braubach 4
D-6240 Königstein/Taunus / DE
03 / Linke, Fritz, Dr.
Im Flemetz 8
D-6240 Königstein/Taunus / DE
[N/P]
Application number, filing date78100072.401.06.1978
Priority number, dateDE1977272647911.06.1977         Original published format: DE 2726479
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0000043
Date:20.12.1978
Language:DE
[N/P]
Type: B1 Patent specification 
No.:EP0000043
Date:06.01.1982
Language:DE
[1982/01]
Search report(s)(Supplementary) European search report - dispatched on:EP26.09.1978
ClassificationIPC:C07F9/32, // C08G79/04
[1982/01]
CPC:
C07F9/3235 (EP); C07F9/305 (EP)
Designated contracting statesBE,   CH,   DE,   FR,   GB,   NL 
TitleGerman:Bisphosphinsäureanhydride und Verfahren zu ihrer Herstellung
English:Bisphosphinic acid anhydrides and process for its preparation
French:Anhydrides d'acide bisphosphinique et procédé pour leur préparation
File destroyed:12.06.1999
Examination procedure08.02.1979Examination requested
11.07.1979Despatch of a communication from the examining division (Time limit: {0})
17.10.1980Despatch of a communication from the examining division (Time limit: M02)
27.11.1980Reply to a communication from the examining division
21.04.1981Despatch of communication of intention to grant (Approval: )
14.05.1981Communication of intention to grant the patent
05.08.1981Fee for grant paid
05.08.1981Fee for publishing/printing paid
Opposition(s)06.10.1982No opposition filed within time limit [ N /P ]
Fees paidRenewal fee
10.05.1980Renewal fee patent year 03
11.05.1981Renewal fee patent year 04
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Lapses during opposition  TooltipBE01.06.1982
CH30.06.1982
[2015/21]
Former [1983/49]BE01.06.1982
GB01.06.1982
CH30.06.1982
Former [1983/43]BE01.06.1982
CH30.06.1982
Documents cited:Search[A]DE2328343  (HOECHST AG);
 FR2264823  [ ] (EXXON RESEARCH ENGINEERING CO [US])
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.