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EP0177294
European procedure
Extract from the Register of European Patents
EP About this file: EP0177294
| EP0177294 - Recovery of gold from refractory auriferous iron-containing sulphidic material [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 21.03.1991 Database last updated on 28.03.2026 | Most recent event Tooltip | 21.03.1991 | No opposition filed within time limit | published on 08.05.1991 [1991/19] | Applicant(s) | For all designated states Sherritt Gordon Limited 2800 Commerce Court West Toronto, Ontario / CA | [1989/24] |
| Former [1986/15] | For all designated states Sherritt Gordon Mines Limited 2800 Commerce Court West Toronto, Ontario / CA | Inventor(s) | 01 /
Genik-Sas-Berezowsky, Roman M. 15115 - 84th Street Edmonton Alberta / CA | 02 /
Weir, Donald R. 10228 - 109th Street Fort Saskatchewan Alberta / CA | [1986/15] | Representative(s) | Lambert, Hugh Richmond, et al D. YOUNG & CO., 21 New Fetter Lane London EC4A 1DA / GB | [1986/15] | Application number, filing date | 85306892.2 | 27.09.1985 | [1986/15] | Priority number, date | CA19840464183 | 27.09.1984 Original published format: CA 464183 | [1986/15] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0177294 | Date: | 09.04.1986 | Language: | EN | [1986/15] | Type: | A3 Search report | No.: | EP0177294 | Date: | 11.05.1988 | Language: | EN | [1988/19] | Type: | B1 Patent specification | No.: | EP0177294 | Date: | 23.05.1990 | Language: | EN | [1990/21] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 24.03.1988 | Classification | IPC: | C22B3/44, C22B3/24, C22B11/08, // C22B11/00 | [1990/21] | CPC: |
C22B11/04 (EP,US);
C22B11/08 (EP,US)
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| Former IPC [1986/15] | C22B11/04, C22B11/08 | Designated contracting states | BE, DE, FR, GB, IT, NL [1986/15] | Title | German: | Goldgewinnung aus goldhaltigen, schwer aufschliessbaren sulfidischen Materialien mit einem Gehalt an Eisen | [1986/15] | English: | Recovery of gold from refractory auriferous iron-containing sulphidic material | [1986/15] | French: | Procédé de récupération de l'or à partir de matières réfractaires sulfurées contenant de l'or et du fer | [1986/15] | Examination procedure | 02.08.1988 | Examination requested [1988/39] | 12.07.1989 | Despatch of communication of intention to grant (Approval: Yes) | 09.11.1989 | Communication of intention to grant the patent | 19.01.1990 | Fee for grant paid | 19.01.1990 | Fee for publishing/printing paid | Opposition(s) | 26.02.1991 | No opposition filed within time limit [1991/19] | Fees paid | Renewal fee | 28.09.1987 | Renewal fee patent year 03 | 19.09.1988 | Renewal fee patent year 04 | 14.09.1989 | Renewal fee patent year 05 |
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