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EP0288294
European procedure
Extract from the Register of European Patents
EP About this file: EP0288294
| EP0288294 - Zeolite L synthesis [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 12.11.1992 Database last updated on 09.04.2026 | Most recent event Tooltip | 12.11.1992 | No opposition filed within time limit | published on 30.12.1992 [1992/53] | Applicant(s) | For all designated states EXXON CHEMICAL PATENTS INC. 1900 East Linden Avenue Linden New Jersey 07036-0710 / US | [N/P] |
| Former [1988/43] | For all designated states EXXON CHEMICAL PATENTS INC. 1900 East Linden Avenue Linden, New Jersey 07036-0710 / US | Inventor(s) | 01 /
Verduijn, Johannes Petrus Westersingel 34 NL-320 XL Spijkenisse / NL | [1988/43] | Representative(s) | Northover, Robert Frank, et al Exxon Chemical Limited Exxon Chemical Technology Centre P.O. Box 1 Abingdon Oxfordshire OX13 6BB / GB | [N/P] |
| Former [1988/43] | Northover, Robert Frank, et al Exxon Chemical Limited Exxon Chemical Technology Centre PO Box 1 Abingdon Oxfordshire, OX13 6BB / GB | Application number, filing date | 88303635.2 | 21.04.1988 | [1988/43] | Priority number, date | GB19870009506 | 22.04.1987 Original published format: GB 8709506 | [1988/43] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0288294 | Date: | 26.10.1988 | Language: | EN | [1988/43] | Type: | B1 Patent specification | No.: | EP0288294 | Date: | 08.01.1992 | Language: | EN | [1992/02] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 29.08.1988 | Classification | IPC: | C01B33/34, B01J29/04, B01J29/34 | [1992/02] | CPC: |
C01B39/32 (EP,US);
B01J29/63 (EP,US);
C01B33/2892 (EP,US);
Y10S423/28 (EP,US)
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| Former IPC [1988/43] | C01B33/28, B01J29/04, B01J29/34 | Designated contracting states | AT, BE, CH, DE, ES, FR, GB, GR, IT, LI, LU, NL, SE [1988/43] | Title | German: | Synthese von Zeolith L | [1988/43] | English: | Zeolite L synthesis | [1988/43] | French: | Synthèse de zéolite L | [1988/43] | Examination procedure | 17.05.1988 | Examination requested [1988/43] | 11.09.1990 | Despatch of a communication from the examining division (Time limit: M04) | 08.01.1991 | Reply to a communication from the examining division | 26.03.1991 | Despatch of communication of intention to grant (Approval: Yes) | 03.07.1991 | Communication of intention to grant the patent | 01.10.1991 | Fee for grant paid | 01.10.1991 | Fee for publishing/printing paid | Opposition(s) | 09.10.1992 | No opposition filed within time limit [1992/53] | Fees paid | Renewal fee | 12.03.1990 | Renewal fee patent year 03 | 27.03.1991 | Renewal fee patent year 04 |
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