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EP0445493
European procedure
Extract from the Register of European Patents
EP About this file: EP0445493
| EP0445493 - Process for production of chlorine dioxide [Right-click to bookmark this link] | Status | Opposition procedure closed Status updated on 18.10.1996 Database last updated on 03.09.2024 | Most recent event Tooltip | 18.10.1996 | Opposition procedure terminated - date of legal effect published | published on 04.12.1996 [1996/49] | Applicant(s) | For all designated states EKA NOBEL AB S-445 01 Bohus / SE | [1991/37] | Inventor(s) | 01 /
Sundblad, Birgitta Nybrogatan 42 S-852 35 Sundsvall / SE | 02 /
Dahl, Anders Ängsövägen 21 S-132 00 Saltsjö-Boo / SE | 03 /
Winters, John R. 3419 Cranborne Chase Marietta, GA 30062 / US | [1991/37] | Representative(s) | Schöld, Zaid Eka Chemicals AB, Patent Department, Box 11556 100 61 Stockholm / SE | [N/P] |
| Former [1991/37] | Schöld, Zaid Eka Nobel AB Patent Department Box 11556 S-100 61 Stockholm / SE | Application number, filing date | 90850420.2 | 20.12.1990 | [1991/37] | Priority number, date | US19900486122 | 05.03.1990 Original published format: US 486122 | SE19900000834 | 09.03.1990 Original published format: SE 9000834 | [1991/37] | Filing language | SV | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0445493 | Date: | 11.09.1991 | Language: | EN | [1991/37] | Type: | B1 Patent specification | No.: | EP0445493 | Date: | 14.12.1994 | Language: | EN | [1994/50] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 24.06.1991 | Classification | IPC: | C01B11/02 | [1991/37] | CPC: |
C01B11/023 (EP)
| Designated contracting states | AT, BE, DE, ES, FR, GB, SE [1991/37] | Title | German: | Verfahren zur Herstellung von Chlordioxyd | [1991/37] | English: | Process for production of chlorine dioxide | [1991/37] | French: | Procédé de production de dioxyde de chlore | [1991/37] | Examination procedure | 27.09.1991 | Examination requested [1991/48] | 01.09.1993 | Despatch of a communication from the examining division (Time limit: M04) | 08.12.1993 | Reply to a communication from the examining division | 28.04.1994 | Despatch of communication of intention to grant (Approval: Yes) | 19.05.1994 | Communication of intention to grant the patent | 26.07.1994 | Fee for grant paid | 26.07.1994 | Fee for publishing/printing paid | Opposition(s) | Opponent(s) | 01
14.09.1995
06.11.1995
ADMISSIBLE Sterling Canada, Inc. 1200 Smith Street Suite 3600 HOUSTON, TX 77002-43212 / US Opponent's representative Larsson, Kjell AWAPATENT AB, Box 45086 104 30 Stockholm / SE | [N/P] |
| Former [1995/45] | |||
| Opponent(s) | 01
14.09.1995
06.11.1995
ADMISSIBLE Sterling Canada, Inc. 1200 Smith Street Suite 3600 HOUSTON; Texas, 77002-43212 / US Opponent's representative Larsson, Kjell AWAPATENT AB, Box 45086 S-104 30 Stockholm / SE | 09.11.1995 | Invitation to proprietor to file observations on the notice of opposition | 10.02.1996 | Reply of patent proprietor to notice(s) of opposition | 11.04.1996 | Despatch of communication that the opposition procedure will be closed | 21.04.1996 | Legal effect of closure of opposition procedure [1996/49] | Fees paid | Renewal fee | 09.10.1992 | Renewal fee patent year 03 | 13.12.1993 | 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 | [XD]FR2344497 (ERCO IND LTD [CA]); | [AD]US4473540 (FREDETTE MAURICE C J [CA]); | [X]FR2569677 (TENNECO CANADA INC [CA]); | [AD]EP0284577 (EKA NOBEL AB [SE]) |