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EP0489550
European procedure
Extract from the Register of European Patents
EP About this file: EP0489550
| EP0489550 - Process for the preparation of 4-hydroxystyrene polymers from 4-acetoxystyrene polymers [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 26.04.1996 Database last updated on 31.08.2024 | Most recent event Tooltip | 26.04.1996 | No opposition filed within time limit | published on 12.06.1996 [1996/24] | Applicant(s) | For all designated states HOECHST CELANESE CORPORATION Route 202-206 North Somerville, N.J. 08876 / US | [1992/24] | Inventor(s) | 01 /
Sheehan, Michael T. 3117 Briarhurst Corpus Christi, Texas 78414 / US | 02 /
Smith, Brad L. 1307 Old Pond Lane Matthews, North Carolina 28105 / US | [1992/24] | Representative(s) | De Minvielle-Devaux, Ian Benedict Peter, et al CARPMAELS & RANSFORD 43, Bloomsbury Square London WC1A 2RA / GB | [1992/24] | Application number, filing date | 91311088.8 | 29.11.1991 | [1992/24] | Priority number, date | US19900622919 | 06.12.1990 Original published format: US 622919 | [1992/24] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0489550 | Date: | 10.06.1992 | Language: | EN | [1992/24] | Type: | B1 Patent specification | No.: | EP0489550 | Date: | 21.06.1995 | Language: | EN | [1995/25] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 13.04.1992 | Classification | IPC: | C08F8/12 | [1992/24] | CPC: |
C08F8/12 (EP);
C08F12/14 (KR);
C08F2810/50 (EP)
| C-Set: |
C08F8/12, C08F112/14 (EP);
C08F8/12, C08F212/14 (EP);
C08F8/12, C08F220/1802 (EP);
C08F212/08, C08F212/22 (EP); | Designated contracting states | AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LI, LU, NL, SE [1992/24] | Title | German: | Verfahren zur Herstellung von 4-Hydroxystyrolpolymeren aus 4-Acetoxystyrolpolymeren | [1995/25] | English: | Process for the preparation of 4-hydroxystyrene polymers from 4-acetoxystyrene polymers | [1992/24] | French: | Procédé de préparation de polymères de 4-hydroxystyrène de polymères de 4-acétoxystyrène | [1992/24] |
| Former [1992/24] | Verfahren zur Herstellung von 4-hydroxystyrolpolymeren aus 4-Acetoxystyrolpolymeren | Examination procedure | 23.07.1992 | Examination requested [1992/38] | 04.08.1994 | Despatch of communication of intention to grant (Approval: No) | 14.12.1994 | Despatch of communication of intention to grant (Approval: later approval) | 20.12.1994 | Communication of intention to grant the patent | 24.01.1995 | Fee for grant paid | 24.01.1995 | Fee for publishing/printing paid | Opposition(s) | 22.03.1996 | No opposition filed within time limit [1996/24] | Fees paid | Renewal fee | 27.09.1993 | Renewal fee patent year 03 | 26.09.1994 | Renewal fee patent year 04 |
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| Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Documents cited: | Search | [AD]US4689371 (ELMORE JIMMY D [US], et al); | [AD]EP0277721 (HOECHST CELANESE CORP [US]); | [AD]EP0314488 (HOECHST CELANESE CORP [US]); | [AD]EP0343986 (HOECHST CELANESE CORP [US]); | [A]WO9012821 (BASF AG [DE]) |