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Extract from the Register of European Patents

EP About this file: EP0782557

EP0782557 - PURIFICATION PROCESS FOR HEXAFLUOROETHANE PRODUCTS [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  12.01.2001
Database last updated on 20.12.2024
Most recent event   Tooltip12.01.2001No opposition filed within time limitpublished on 28.02.2001 [2001/09]
Applicant(s)For all designated states
E. I. du Pont de Nemours and Company
1007 Market Street
Wilmington, DE 19898 / US
[N/P]
Former [1997/28]For all designated states
E.I. DU PONT DE NEMOURS AND COMPANY
1007 Market Street
Wilmington Delaware 19898 / US
Inventor(s)01 / MILLER, Ralph, Newton
39 Hillstream Road
Newark, DE 19711-2477 / US
02 / DeSCHERE, Mark, Richard
4 Hidden Valley Drive
Newark, DE 19711-7464 / US
03 / MAHLER, Barry, Asher
104 Carter Way
Glen Mills, PA 19342-1258 / US
04 / MUTHU, Olagappan
108 Beech Hill Drive
Newark, DE 19711-2951 / US
[1997/28]
Representative(s)Woodcraft, David Charles, et al
Brookes Batchellor 102-108 Clerkenwell Road
London EC1M 5SA / GB
[N/P]
Former [1997/28]Woodcraft, David Charles, et al
BROOKES & MARTIN High Holborn House 52/54 High Holborn
London, WC1V 6SE / GB
Application number, filing date95932354.413.09.1995
[1997/28]
WO1995US11053
Priority number, dateUS1994030937620.09.1994         Original published format: US 309376
[1997/28]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9609271
Date:28.03.1996
Language:EN
[1996/14]
Type: A1 Application with search report 
No.:EP0782557
Date:09.07.1997
Language:EN
The application published by WIPO in one of the EPO official languages on 28.03.1996 takes the place of the publication of the European patent application.
[1997/28]
Type: B1 Patent specification 
No.:EP0782557
Date:15.03.2000
Language:EN
[2000/11]
Search report(s)International search report - published on:EP28.03.1996
ClassificationIPC:C07C17/386, C07C17/20, C07C17/38, C07C19/08
[1997/28]
CPC:
C07C19/08 (EP,US); C01B7/0712 (EP,US); C01B7/196 (EP,US);
C07C17/38 (EP,US); C07C17/386 (EP,US); Y02P20/582 (EP,US)
C-Set:
C07C17/386, C07C19/08 (EP,US)
Designated contracting statesDE,   ES,   FR,   GB,   IT,   NL [1997/28]
TitleGerman:REINIGUNGSVERFAHREN FÜR HEXAFLUORETHANPRODUKTE[1997/28]
English:PURIFICATION PROCESS FOR HEXAFLUOROETHANE PRODUCTS[1997/28]
French:PROCEDE D'EPURATION DE PRODUITS D'HEXAFLUOROETHANE[1997/28]
Entry into regional phase17.02.1997National basic fee paid 
17.02.1997Designation fee(s) paid 
17.02.1997Examination fee paid 
Examination procedure18.03.1996Request for preliminary examination filed
International Preliminary Examining Authority: EP
17.02.1997Examination requested  [1997/28]
18.12.1997Despatch of a communication from the examining division (Time limit: M06)
24.06.1998Reply to a communication from the examining division
25.09.1998Despatch of a communication from the examining division (Time limit: M06)
24.03.1999Reply to a communication from the examining division
11.05.1999Despatch of communication of intention to grant (Approval: Yes)
30.08.1999Communication of intention to grant the patent
17.11.1999Fee for grant paid
17.11.1999Fee for publishing/printing paid
Opposition(s)16.12.2000No opposition filed within time limit [2001/09]
Fees paidRenewal fee
17.02.1997Renewal fee patent year 03
16.09.1998Renewal fee patent year 04
20.09.1999Renewal fee patent year 05
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Cited inInternational search[A]WO9317988  (DU PONT [US]) [A] 1,3,9 * the whole document *;
 [A]US4950364  (WISMER JOHN A [US]) [A] 1 * column W *
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.