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EP0066369
European procedure
Extract from the Register of European Patents
EP About this file: EP0066369
| EP0066369 - Production of a liquid composition containing a perfluorinated ion exchange polymer, and the use of this polymer [Right-click to bookmark this link] | Status | Opposition rejected Status updated on 22.02.1989 Database last updated on 09.04.2026 | Most recent event Tooltip | 22.02.1989 | Opposition rejected | published on 12.04.1989 [1989/15] | Applicant(s) | For all designated states E. I. du Pont de Nemours and Company 1007 Market Street Wilmington, DE 19898 / US | [N/P] |
| Former [1982/49] | For all designated states E.I. DU PONT DE NEMOURS AND COMPANY 1007 Market Street Wilmington Delaware 19898 / US | Inventor(s) | 01 /
Grot, Walther Gustav Chadds Ford Pennsylvania 19317 / US | [1982/49] | Representative(s) | Myerscough, Philip Boyd, et al J.A.KEMP & CO. 14, South Square Gray's Inn London WC1R 5LX / GB | [1982/49] | Application number, filing date | 82302188.6 | 28.04.1982 | [1982/49] | Priority number, date | US19810259506 | 01.05.1981 Original published format: US 259506 | [1982/49] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0066369 | Date: | 08.12.1982 | Language: | EN | [1982/49] | Type: | B1 Patent specification | No.: | EP0066369 | Date: | 14.08.1985 | Language: | EN | [1985/33] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 17.08.1982 | Classification | IPC: | C08L27/18, C08J3/04, C08J7/02, C08J5/22, C25B13/08, B01D13/04, C08F6/04, C08J11/04 | [1982/49] | CPC: |
C08J3/091 (EP,US);
C08J5/2237 (EP,US);
C08J5/2293 (EP,US);
C08J2327/12 (EP,US)
| Designated contracting states | AT, BE, CH, DE, FR, GB, IT, LI, LU, NL, SE [1982/49] | Title | German: | Herstellung einer flüssigen Zusammensetzung mit einem perfluorierten Ionenaustauscherpolymer und die Verwendung dieses Polymers | [1982/49] | English: | Production of a liquid composition containing a perfluorinated ion exchange polymer, and the use of this polymer | [1982/49] | French: | Préparation d'une composition liquide contenant un polymère échangeur d'ions perfluoré et utilisation de ce polymère | [1982/49] | Examination procedure | 04.05.1983 | Examination requested [1983/29] | 03.07.1984 | Despatch of a communication from the examining division (Time limit: M04) | 17.10.1984 | Reply to a communication from the examining division | 05.12.1984 | Despatch of communication of intention to grant (Approval: ) | 04.02.1985 | Communication of intention to grant the patent | 03.04.1985 | Fee for grant paid | 03.04.1985 | Fee for publishing/printing paid | Opposition(s) | Opponent(s) | 01
13.05.1986
05.07.1986
ADMISSIBLE HOECHST AKTIENGESELLSCHAFT Werk Gendorf Patentbüro D-84504 Burgkirchen / DE | [1986/28] | 24.07.1986 | Invitation to proprietor to file observations on the notice of opposition | 15.11.1986 | Reply of patent proprietor to notice(s) of opposition | 17.12.1986 | Communication of observations of patent proprietor (Time limit: M03) | 17.03.1987 | Reply of parties involved to observations of patent proprietor | 27.04.1988 | Date of oral proceedings | 23.06.1988 | Despatch of minutes of oral proceedings | 07.11.1988 | Date of despatch of rejection of opposition | 17.11.1988 | Legal effect of rejection of opposition [1989/15] | Fees paid | Renewal fee | 11.04.1984 | Renewal fee patent year 03 | 11.04.1985 | Renewal fee patent year 04 |
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