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EP0255283
European procedure
Extract from the Register of European Patents
EP About this file: EP0255283
| EP0255283 - Products and processes for the flocculation of aqueous suspensions [Right-click to bookmark this link] | Status | Patent revoked Status updated on 22.04.1992 Database last updated on 26.06.2024 | Most recent event Tooltip | 22.04.1992 | Revocation of patent | published on 10.06.1992 [1992/24] | Applicant(s) | For all designated states Ciba Specialty Chemicals Water Treatments Limited P.O. Box 38, Low Moor Bradford West Yorkshire BD12 0JZ / GB | [N/P] |
| Former [1988/05] | For all designated states ALLIED COLLOIDS LIMITED P.O. Box 38, Low Moor Bradford, West Yorkshire BD12 0JZ / GB | Inventor(s) | 01 /
Field, John Rodney 2 Leyburn Avenue Hipperholme Halifax West Yorkshire / GB | 02 /
Smith, Nicholas Denzil 8 Otley Road East Morton Keighley West Yorkshire / GB | [1988/05] | Representative(s) | Lawrence, Peter Robin Broughton, et al Gill Jennings & Every LLP Broadgate House 7 Eldon Street London EC2M 7LH / GB | [N/P] |
| Former [1988/05] | Lawrence, Peter Robin Broughton, et al GILL JENNINGS & EVERY, Broadgate House, 7 Eldon Street London EC2M 7LH / GB | Application number, filing date | 87306470.3 | 22.07.1987 | [1988/05] | Priority number, date | GB19860018339 | 28.07.1986 Original published format: GB 8618339 | [1988/05] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0255283 | Date: | 03.02.1988 | Language: | EN | [1988/05] | Type: | B1 Patent specification | No.: | EP0255283 | Date: | 03.10.1990 | Language: | EN | [1990/40] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 23.11.1987 | Classification | IPC: | C02F1/52 | [1988/05] | CPC: |
C02F1/5236 (EP,US);
C02F1/5227 (EP,US);
C02F1/54 (EP,US)
| Designated contracting states | BE, DE, ES, FR, GB, IT, NL, SE [1988/05] | Title | German: | Produkte und Verfahren für die Flockung von wässerigen Suspensionen | [1988/05] | English: | Products and processes for the flocculation of aqueous suspensions | [1988/05] | French: | Produits et procédés de floculation de suspensions aqueuses | [1988/05] | Examination procedure | 11.12.1987 | Examination requested [1988/06] | 31.03.1989 | Despatch of a communication from the examining division (Time limit: M06) | 09.10.1989 | Reply to a communication from the examining division | 21.11.1989 | Despatch of communication of intention to grant (Approval: Yes) | 26.03.1990 | Communication of intention to grant the patent | 13.06.1990 | Fee for grant paid | 13.06.1990 | Fee for publishing/printing paid | Opposition(s) | Opponent(s) | 01
02.07.1991
09.08.1991
ADMISSIBLE S.N.F. S.A. 41, Rue Jean-Huss F-42000 Saint-Etienne / FR Opponent's representative Maiwald, Walter Maiwald Patentanwalts GmbH Benrather Strasse 15 40213 Düsseldorf / DE | [N/P] |
| Former [1991/35] | |||
| Opponent(s) | 01
02.07.1991
09.08.1991
ADMISSIBLE SNF 41, Rue Jean-Huss F-42028 Saint-Etienne Cedex 1 / FR Opponent's representative Maiwald, Walter, Dr. Strasse & Maiwald, Meys, Stach & Vonnemann, Postfach 90 09 54 D-81509 München / DE | 13.08.1991 | Invitation to proprietor to file observations on the notice of opposition | 16.01.1992 | Despatch of communication that the patent will be revoked | 26.01.1992 | Legal effect of revocation of patent [1992/24] | Fees paid | Renewal fee | 10.07.1989 | Renewal fee patent year 03 | 17.07.1990 | 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 | [Y]GB1188394 (FOSECO INT); | [A]US3839202 (ROY C); | [Y]GB1501099 (HEMLAB AG) |