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Extract from the Register of European Patents

EP About this file: EP0668859

EP0668859 - PROCESSES FOR PREPARING 2,4-OXAZOLIDINEDIONES [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  24.12.1997
Database last updated on 15.06.2024
Most recent event   Tooltip04.01.2003Lapse of the patent in a contracting state
New state(s): NL		published on 19.02.2003  [2003/08]
Applicant(s)For all designated states
E. I. du Pont de Nemours and Company
1007 Market Street
Wilmington, DE 19898 / US
[N/P]
Former [1995/35]For all designated states
E.I. DU PONT DE NEMOURS AND COMPANY
1007 Market Street
Wilmington Delaware 19898 / US
Inventor(s)01 / STERNBERG, Jeffrey, Arthur
3111 Loudoun Drive
Wilmington, DE 19808-2703 / US
02 / SUN, King-Mo
22 Pine Grove Lane
Hockessin, DE 19707 / US
03 / TOJI, Masuo
550 Main Street
Sewell, NJ 08080-9710 / US
04 / WITTERHOLT, Vincent, Gerard
334 Spalding Road
Wilmington, DE 19803 / US
[1995/35]
Representative(s)Woodman, Derek, et al
Frank B. Dehn & Co. St Bride's House 10 Salisbury Square
London EC4Y 8JD / GB
[N/P]
Former [1996/31]Woodman, Derek, et al
Frank B. Dehn & Co. European Patent Attorneys Imperial House 15-19 Kingsway
London WC2B 6UZ / GB
Former [1995/35]Hildyard, Edward Martin, et al
Frank B. Dehn & Co. European Patent Attorneys Imperial House 15-19 Kingsway
London WC2B 6UZ / GB
Application number, filing date94900457.605.11.1993
[1995/35]
WO1993US10435
Priority number, dateUS1992097613013.11.1992         Original published format: US 976130
US1992098857410.12.1992         Original published format: US 988574
US1993002323925.02.1993         Original published format: US 23239
[1995/35]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9411359
Date:26.05.1994
Language:EN
[1994/12]
Type: A1 Application with search report 
No.:EP0668859
Date:30.08.1995
Language:EN
The application published by WIPO in one of the EPO official languages on 26.05.1994 takes the place of the publication of the European patent application.
[1995/35]
Type: B1 Patent specification 
No.:EP0668859
Date:26.02.1997
Language:EN
[1997/09]
Search report(s)International search report - published on:EP26.05.1994
ClassificationIPC:C07D263/44, C07D233/60, C07D249/08
[1995/35]
CPC:
C07D263/44 (EP,KR,US); C07D231/12 (EP,US); C07D233/56 (EP,US);
C07D233/60 (KR); C07D249/08 (EP,US)
Designated contracting statesAT,   BE,   CH,   DE,   DK,   ES,   FR,   GB,   GR,   IE,   IT,   LI,   NL,   PT,   SE [1995/35]
TitleGerman:VERFAHREN ZUR HERSTELLUNG VON 2,4-OXAZOLIDINEDIONEN[1995/35]
English:PROCESSES FOR PREPARING 2,4-OXAZOLIDINEDIONES[1995/35]
French:PROCEDES DE PREPARATION DE 2,4-OXAZOLIDINEDIONES[1995/35]
Entry into regional phase24.04.1995National basic fee paid 
24.04.1995Designation fee(s) paid 
24.04.1995Examination fee paid 
Examination procedure18.05.1994Request for preliminary examination filed
International Preliminary Examining Authority: EP
24.04.1995Examination requested  [1995/35]
12.09.1995Despatch of communication of intention to grant (Approval: No)
31.01.1996Despatch of communication of intention to grant (Approval: later approval)
07.02.1996Communication of intention to grant the patent
03.04.1996Fee for grant paid
03.04.1996Fee for publishing/printing paid
Opposition(s)27.11.1997No opposition filed within time limit [1998/07]
Fees paidRenewal fee
24.04.1995Renewal fee patent year 03
22.11.1996Renewal fee patent year 04
Opt-out from the exclusive  Tooltip
competence of the Unified
Patent Court		 See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Lapses during opposition  TooltipAT26.02.1997
BE26.02.1997
DK26.02.1997
GR26.02.1997
NL26.02.1997
PT26.05.1997
SE26.05.1997
IE05.11.1997
[2003/08]
Former [2001/01]AT26.02.1997
BE26.02.1997
DK26.02.1997
GR26.02.1997
PT26.05.1997
SE26.05.1997
IE05.11.1997
Former [2000/05]AT26.02.1997
BE26.02.1997
DK26.02.1997
GR26.02.1997
PT26.05.1997
SE26.05.1997
Former [1998/15]AT26.02.1997
BE26.02.1997
DK26.02.1997
PT26.05.1997
SE26.05.1997
Former [1998/11]AT26.02.1997
BE26.02.1997
PT26.05.1997
SE26.05.1997
Former [1998/03]AT26.02.1997
BE26.02.1997
PT26.05.1997
Former [1997/49]AT26.02.1997
BE26.02.1997
Former [1997/42]AT26.02.1997
Cited inInternational search[DA]EP0393911  (DU PONT [US]) [DA] 1* see pages 13 and 14;equation 10 and 11 *
 [A]  - D.GEFFKEN, "Synthese von 6,6-disubstituierte 2,5-dioxodihydro-4-H-1,,3,4-dioxazinen und ihre Umwandlung in 3-amino-bzw 3-alkyl(aryl)-2,4-dioxotetrahydro-1,3-oxazole", SYNTHESIS., STUTTGART DE, (198101), no. 1, pages 38 - 40 [A] 1 * the whole document *
ExaminationWO9322299
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.