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EP0454242
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EP About this file: EP0454242
| EP0454242 - Digital echo canceller comprising a double-talk detector [Right-click to bookmark this link] | Status | The application has been refused Status updated on 25.01.1995 Database last updated on 22.08.2024 | Most recent event Tooltip | 25.01.1995 | Refusal of application | published on 15.03.1995 [1995/11] | Applicant(s) | For all designated states Koninklijke Philips Electronics N.V. Groenewoudseweg 1 5621 BA Eindhoven / NL | [N/P] |
| Former [1991/44] | For all designated states Philips Electronics N.V. Groenewoudseweg 1 NL-5621 BA Eindhoven / NL | Inventor(s) | 01 /
van Gerwen, Petrus Josephus c/o INT. OCTROOIBUREAU B.V., Prof. Holstlaan 6 NL-5656 AA Eindhoven / NL | 02 /
Kotmans, Hendrik Jan c/o INT. OCTROOIBUREAU B.V., Prof. Holstlaan 6 NL-5656 AA Eindhoven / NL | 03 /
van de Laar, Franciscus Antonius Maria c/o INT. OCTROOIBUREAU B.V., Prof. Holstlaan 6 NL-5656 AA Eindhoven / NL | [1991/44] | Representative(s) | de Jongh, Cornelis Dominicus, et al INTERNATIONAAL OCTROOIBUREAU B.V., Prof. Holstlaan 6 5656 AA Eindhoven / NL | [N/P] |
| Former [1991/44] | De Jongh, Cornelis Dominicus, et al INTERNATIONAAL OCTROOIBUREAU B.V., Prof. Holstlaan 6 NL-5656 AA Eindhoven / NL | Application number, filing date | 91200945.3 | 22.04.1991 | [1991/44] | Priority number, date | NL19900001016 | 27.04.1990 Original published format: NL 9001016 | [1991/44] | Filing language | NL | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0454242 | Date: | 30.10.1991 | Language: | EN | [1991/44] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 19.08.1991 | Classification | IPC: | H04B3/23 | [1991/44] | CPC: |
H04B3/234 (EP,US)
| Designated contracting states | CH, DE, FR, GB, LI, SE [1991/44] | Title | German: | Digitaler Echounterdrücker mit Gegensprechdetektor | [1991/44] | English: | Digital echo canceller comprising a double-talk detector | [1991/44] | French: | Annuleur d'écho numérique muni d'un détecteur de double parole | [1991/44] | File destroyed: | 03.03.2001 | Examination procedure | 29.04.1992 | Examination requested [1992/26] | 17.01.1994 | Despatch of a communication from the examining division (Time limit: M04) | 13.04.1994 | Reply to a communication from the examining division | 11.05.1994 | Despatch of communication of intention to grant (Approval: ) | 19.10.1994 | Despatch of communication that the application is refused, reason: formalities examination [1995/11] | 29.10.1994 | Application refused, date of legal effect [1995/11] | Fees paid | Renewal fee | 26.04.1993 | Renewal fee patent year 03 | 25.04.1994 | 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 | [AD]EP0301627 | [ ] - IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE 1987 CONFERENCE RECORD, Tokyo, 15-18 novembre 1987, pages 1940-1944, New York, US; M.R. ASHARIF et al.: "Acoustic echo canceler based on frequency bin adaptive filtering (FBAF)" |