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Extract from the Register of European Patents

EP About this file: EP0265131

EP0265131 - Simplified recovery of data signals from quadrature-related carrier signals [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  03.06.1995
Database last updated on 05.10.2024
Most recent event   Tooltip03.06.1995No opposition filed within time limitpublished on 26.07.1995 [1995/30]
Applicant(s)For all designated states
AT&T Corp.
32 Avenue of the Americas
New York, NY 10013-2412 / US
[1988/17]
Inventor(s)01 / Debus, Walter, Jr.
Box 208
Nottingham New Hampshire 03290 / US
02 / Reeve, Howard Clifford, III
28A Stevens Street
Methuen Massachusetts 01844 / US
03 / Siller, Curtis Albert, Jr.
3 Wintergreen Circle
Andover Massachusetts 01810 / US
[1988/17]
Representative(s)Buckley, Christopher Simon Thirsk, et al
Lucent Technologies (UK) Ltd, 5 Mornington Road Woodford Green
Essex IG8 0TU / GB
[N/P]
Former [1994/08]Buckley, Christopher Simon Thirsk, et al
AT&T (UK) LTD., AT&T Intellectual Property Division, 5 Mornington Road
Woodford Green, Essex IG8 0TU / GB
Former [1988/17]Buckley, Christopher Simon Thirsk
AT&T (UK) Ltd. 5 Mornington Road
Woodford Green Essex IG8 0TU / GB
Application number, filing date87308987.412.10.1987
[1988/17]
Priority number, dateUS1986092036720.10.1986         Original published format: US 920367
[1988/17]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0265131
Date:27.04.1988
Language:EN
[1988/17]
Type: A3 Search report 
No.:EP0265131
Date:21.02.1990
Language:EN
[1990/08]
Type: B1 Patent specification 
No.:EP0265131
Date:03.08.1994
Language:EN
[1994/31]
Search report(s)(Supplementary) European search report - dispatched on:EP03.01.1990
ClassificationIPC:H04L27/34
[1994/31]
CPC:
H04L27/363 (EP,US); H04L27/3881 (EP,US)
Former IPC [1988/17]H04L27/02
Designated contracting statesDE,   FR,   GB,   IT [1988/17]
TitleGerman:Vereinfachte Zurückgewinnung von Daten aus Signalen mit Quadraturträgern[1988/17]
English:Simplified recovery of data signals from quadrature-related carrier signals[1988/17]
French:Récupération simplifiée de données à partir de signaux ayant des porteuses en quadrature[1988/17]
Examination procedure09.08.1990Examination requested  [1990/41]
10.03.1992Despatch of a communication from the examining division (Time limit: M04)
09.07.1992Reply to a communication from the examining division
18.08.1992Despatch of a communication from the examining division (Time limit: M04)
09.12.1992Reply to a communication from the examining division
02.03.1993Despatch of a communication from the examining division (Time limit: M04)
23.06.1993Reply to a communication from the examining division
08.09.1993Despatch of communication of intention to grant (Approval: Yes)
21.01.1994Communication of intention to grant the patent
24.03.1994Fee for grant paid
24.03.1994Fee for publishing/printing paid
Opposition(s)04.05.1995No opposition filed within time limit [1995/30]
Fees paidRenewal fee
19.10.1989Renewal fee patent year 03
19.10.1990Renewal fee patent year 04
21.10.1991Renewal fee patent year 05
19.10.1992Renewal fee patent year 06
18.10.1993Renewal fee patent year 07
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Documents cited:Search[A]WO8603356  (DEVON COUNTY COUNCIL [GB], et al)
 [X]  - IEEE TRANSACTIONS ON COMMUNICATIONS, vol. COM-23, no. 3, March 1975, pages 348-352, IEEE, New York, US; R.D. GITLIN et al.: "The performance of staggered quadrature amplitude modulation in the presence of phase jitter"
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.