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Extract from the Register of European Patents

EP About this file: EP0526589

EP0526589 - SURFACE WAVE LOW LOSS FILTER [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  24.04.1995
Database last updated on 18.11.2024
Most recent event   Tooltip24.04.1995No opposition filed within time limitpublished on 14.06.1995 [1995/24]
Applicant(s)For all designated states
THOMSON-CSF
173, Boulevard Haussmann
75008 Paris / FR
[N/P]
Former [1994/06]For all designated states
THOMSON-CSF
173, Boulevard Haussmann
F-75008 Paris / FR
Former [1993/06]For all designated states
THOMSON-CSF
173, Boulevard Haussmann
F-75008 Paris / FR
Inventor(s)01 / DUFILIE, Pierre
190 Echo Drive
Vernon, CT 06066 / US
02 / HODE, Jean-Michel
3, rue Paul-Cézanne
F-06560 Valbonne / FR
[1993/06]
Representative(s)Desperrier, Jean-Louis, et al
Thomson-CSF Propriété Intellectuelle, 13, Avenue du Président Salvador Allende
94117 Arcueil Cédex / FR
[N/P]
Former [1993/06]Desperrier, Jean-Louis, et al
THOMSON-CSF SCPI B.P. 329 50, rue Jean-Pierre Timbaud
F-92402 Courbevoie Cédex / FR
Application number, filing date91919033.012.04.1991
[1993/06]
WO1991FR00308
Priority number, dateFR1990000518924.04.1990         Original published format: FR 9005189
[1993/06]
Filing languageFR
Procedural languageFR
PublicationType: A1 Application with search report
No.:WO9116763
Date:31.10.1991
Language:FR
[1991/25]
Type: A1 Application with search report 
No.:EP0526589
Date:10.02.1993
Language:FR
The application published by WIPO in one of the EPO official languages on 31.10.1991 takes the place of the publication of the European patent application.
[1993/06]
Type: B1 Patent specification 
No.:EP0526589
Date:22.06.1994
Language:FR
[1994/25]
Search report(s)International search report - published on:EP31.10.1991
ClassificationIPC:H03H9/145, H03H9/64
[1993/06]
CPC:
H03H9/6466 (EP,US); H03H9/027 (EP,US); H03H9/02921 (EP,US);
H03H9/14505 (EP,US); H03H9/6433 (EP,US)
Designated contracting statesDE,   GB [1993/06]
TitleGerman:OBERFLÄCHENWELLENFILTER MIT NIEDRIGEM VERLUST[1993/06]
English:SURFACE WAVE LOW LOSS FILTER[1993/06]
French:FILTRE A ONDES DE SURFACE ET A FAIBLES PERTES[1993/06]
Entry into regional phase09.09.1992National basic fee paid 
09.09.1992Designation fee(s) paid 
09.09.1992Examination fee paid 
Examination procedure14.10.1991Request for preliminary examination filed
International Preliminary Examining Authority: DE
09.09.1992Examination requested  [1993/06]
21.09.1993Despatch of communication of intention to grant (Approval: Yes)
26.10.1993Communication of intention to grant the patent
18.12.1993Fee for grant paid
18.12.1993Fee for publishing/printing paid
Opposition(s)23.03.1995No opposition filed within time limit [1995/24]
Fees paidRenewal fee
15.03.1993Renewal fee patent year 03
29.03.1994Renewal fee patent year 04
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Cited inInternational searchEP0158402  [ ] (PHILIPS ELECTRONIC ASSOCIATED [GB], et al)
 [X]  - IEEE Ultrasonics Symposium, volume 1 2-5 octobre 1988, (Chicago, Illinois, US) P. Dulfilie et al.:" A low high performance filter structure" page 127-130
 [Y]  - 1982 Ultrasonics Symposium Proceedings, volume 1, 27-29 octobre 1982, (san Diego), C.L. Wet: "Saw convolver employing unidirectional transducers for improved efficiency" page 119-123
Examination   - IEEE Ultrasonics Symposium, volume 1 2% octobre 1988, (Chicago Illinois, US) P. Dufilie et al.: "A low loss high performance fillter structure" page 127-130 voir page 127, colonne de gauche, lignes 18-33; page 127, colonne de droite, ligne 29 - page 129, colonne de gauche, ligne 29: figures 1,3 (cité dans la demande)
    - 1982 Ultrasonics Symposium Proceedings, volume 1, 27-29 octobre 1982, (San Diego) C.L. West: "Saw convolver employing unidirectional transducers for improved efficiency" page 119-123 voir page 119, colonne de droite, lignes 136; figure 1
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.