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EP0430352
European procedure
Extract from the Register of European Patents
EP About this file: EP0430352
| EP0430352 - Process for purifying paraffin sulphonic acids [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 08.07.1995 Database last updated on 03.09.2024 | Most recent event Tooltip | 08.07.1995 | No opposition filed within time limit | published on 30.08.1995 [1995/35] | Applicant(s) | For all designated states ENIRICERCHE S.p.A. Corso Venezia 16 20121 Milano / IT | For all designated states ENICHEM AUGUSTA S.p.A. Via Ruggero Settimo 55 90139 Palermo / IT | [N/P] |
| Former [1994/12] | For all designated states ENIRICERCHE S.p.A. Corso Venezia 16 I-20121 Milan / IT | ||
| For all designated states ENICHEM AUGUSTA S.P.A. Via Ruggero Settimo 55 I-90139 Palermo / IT | |||
| Former [1991/23] | For all designated states ENIRICERCHE S.p.A. Corso Venezia 16 I-20121 Milan / IT | ||
| For all designated states ENIMONT AUGUSTA S.P.A. Via Ruggero Settimo 55 I-90139 Palermo / IT | Inventor(s) | 01 /
Genova, Calogero Piazza Puccini 16 I-20070 Vizzolo Predabissi Milan / IT | 02 /
Blute, Irena Lojovaegen 10 Lidingo / SE | 03 /
Platone, Edoardo Piazza Vittorio Veneto 7 I-14100 Asti / IT | [1991/23] | Representative(s) | Fusina, Gerolamo, et al Ing. Barzanò & Zanardo Milano S.p.A, Via Borgonuovo, 10 20121 Milano / IT | [N/P] |
| Former [1994/36] | Fusina, Gerolamo, et al Ing. Barzanò & Zanardo Milano S.p.A, Via Borgonuovo, 10 I-20121 Milano / IT | ||
| Former [1994/12] | De Carli, Erberto ING. BARZANO & ZANARDO MILANO S.p.A. Via Borgonuovo, 10 I-20121 Milano / IT | ||
| Former [1991/23] | Roggero, Sergio Ing. Barzanò & Zanardo Milano S.p.A. Via Borgonuovo 10 I-20121 Milano / IT | Application number, filing date | 90203082.4 | 22.11.1990 | [1991/23] | Priority number, date | IT19890022568 | 01.12.1989 Original published format: IT 2256889 | [1991/23] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0430352 | Date: | 05.06.1991 | Language: | EN | [1991/23] | Type: | A3 Search report | No.: | EP0430352 | Date: | 04.09.1991 | Language: | EN | [1991/36] | Type: | B1 Patent specification | No.: | EP0430352 | Date: | 07.09.1994 | Language: | EN | [1994/36] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 15.07.1991 | Classification | IPC: | C07C309/03, C07C303/44 | [1991/23] | CPC: |
C07C303/44 (EP,US)
| C-Set: |
C07C303/44, C07C309/03 (EP,US)
| Designated contracting states | AT, BE, CH, DE, DK, ES, FR, GB, GR, LI, LU, NL, SE [1991/23] | Title | German: | Verfahren zur Reinigung von Paraffinsulfonsäuren | [1991/23] | English: | Process for purifying paraffin sulphonic acids | [1991/23] | French: | Procédé pour la purification d'acides paraffines sulfoniques | [1991/23] | Examination procedure | 16.01.1992 | Examination requested [1992/12] | 10.11.1992 | Despatch of a communication from the examining division (Time limit: M04) | 03.03.1993 | Reply to a communication from the examining division | 25.05.1993 | Despatch of a communication from the examining division (Time limit: M06) | 18.11.1993 | Reply to a communication from the examining division | 26.11.1993 | Despatch of a communication from the examining division (Time limit: M02) | 07.12.1993 | Reply to a communication from the examining division | 08.02.1994 | Despatch of communication of intention to grant (Approval: Yes) | 23.02.1994 | Communication of intention to grant the patent | 21.04.1994 | Fee for grant paid | 21.04.1994 | Fee for publishing/printing paid | Opposition(s) | 08.06.1995 | No opposition filed within time limit [1995/35] | Fees paid | Renewal fee | 29.10.1992 | Renewal fee patent year 03 | 26.10.1993 | 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 | [A]FR483716 (LOUIS MUNROE DENNIS [US]); | [A]EP0037883 (HUELS CHEMISCHE WERKE AG [DE]) | Examination | - Patentblatt des Deutschen Patentamtes, Vol. 73, No 4, January, 29th 1953, p. 163, right column, 12o, 23/01, F3718 "Verfahren zur Abtrennung von Schwefelsäure aus wässerigen Lösungen, die höhermolekulare Sulfonsäuren und Schwefelsäure und gegebenefalls noch mit Wasser mischbare organische Lösungsmittel enthalten". |