-
EP0221780
European procedure
Extract from the Register of European Patents
EP About this file: EP0221780
| EP0221780 - Porous silica microspheres having silanol-enriched and silanized surfaces [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 13.08.1992 Database last updated on 16.07.2024 | Most recent event Tooltip | 13.08.1992 | No opposition filed within time limit | published on 30.09.1992 [1992/40] | Applicant(s) | For all designated states E. I. du Pont de Nemours and Company 1007 Market Street Wilmington, DE 19898 / US | [N/P] |
| Former [1987/20] | For all designated states E.I. DU PONT DE NEMOURS AND COMPANY 1007 Market Street Wilmington Delaware 19898 / US | Inventor(s) | 01 /
Kirkland, Joseph Jack 318 Waycross Road Woodbrook Wilmington Delaware 19803 / US | 02 /
Köhler, Jürgen Ankerweg 1 D-4355 Waltrop / DE | [1987/20] | Representative(s) | Hildyard, Edward Martin, et al Frank B. Dehn & Co., European Patent Attorneys, 179 Queen Victoria Street London EC4V 4EL / GB | [N/P] |
| Former [1987/20] | Hildyard, Edward Martin, et al Frank B. Dehn & Co. European Patent Attorneys Imperial House 15-19 Kingsway London WC2B 6UZ / GB | Application number, filing date | 86308493.5 | 31.10.1986 | [1987/20] | Priority number, date | US19850798332 | 01.11.1985 Original published format: US 798332 | [1987/20] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0221780 | Date: | 13.05.1987 | Language: | EN | [1987/20] | Type: | A3 Search report | No.: | EP0221780 | Date: | 05.08.1987 | Language: | EN | [1987/32] | Type: | B1 Patent specification | No.: | EP0221780 | Date: | 09.10.1991 | Language: | EN | [1991/41] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 16.06.1987 | Classification | IPC: | G01N30/48, B01J20/10 | [1987/20] | CPC: |
B01J20/286 (EP);
B01J20/103 (EP);
B01J20/283 (EP);
B01J2220/54 (EP)
| Designated contracting states | AT, BE, CH, DE, ES, FR, GB, GR, IT, LI, LU, NL, SE [1987/20] | Title | German: | Poröse Mikrokügelchen aus Siliziumdioxyd mit Silanol angereicherten und silanisierten Oberflächen | [1987/20] | English: | Porous silica microspheres having silanol-enriched and silanized surfaces | [1987/20] | French: | Microsphères poreuses de silice à surfaces enrichies en silanol et silanisées | [1987/20] | Examination procedure | 17.12.1987 | Examination requested [1988/07] | 31.07.1989 | Despatch of a communication from the examining division (Time limit: M07) | 09.03.1990 | Reply to a communication from the examining division | 11.04.1990 | Despatch of a communication from the examining division (Time limit: M06) | 01.10.1990 | Reply to a communication from the examining division | 23.01.1991 | Despatch of communication of intention to grant (Approval: Yes) | 12.04.1991 | Communication of intention to grant the patent | 24.06.1991 | Fee for grant paid | 24.06.1991 | Fee for publishing/printing paid | Opposition(s) | 10.07.1992 | No opposition filed within time limit [1992/40] | Fees paid | Renewal fee | 13.10.1988 | Renewal fee patent year 03 | 18.10.1989 | Renewal fee patent year 04 | 25.10.1990 | Renewal fee patent year 05 | 20.12.1990 | Renewal fee patent year 06 |
| 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. | Documents cited: | Search | [A]US2699376 (HAY RUSSELL G); | [A]GB1016768 (HUBER CORP J M); | [YD]US3782075 (KIRKLAND J); | [A]US3975293 (LEPAGE MADELEINE); | [Y]US3984349 (MEILLER FRANCOIS, et al); | [A]EP0088818 (BORDEN CO LTD [CA]) | [A] - ANALYTICAL CHEMISTRY, vol. 45, no. 8, July 1973, pages 1383-1389; R.K. GILPIN et al.: "Role of tri- and dimethylsilanes in tailoring chromatographic adsorbents" |