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Extract from the Register of European Patents

EP About this file: EP0210292

EP0210292 - Frequency demodulation circuit with zero-crossing counter [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  27.07.1991
Database last updated on 02.09.2024
Most recent event   Tooltip27.07.1991No opposition filed within time limitpublished on 18.09.1991 [1991/38]
Applicant(s)For all designated states
Deutsche ITT Industries GmbH
Hans-Bunte-Strasse 19
79108 Freiburg / DE
[N/P]
Former [1987/06]For all designated states
Deutsche ITT Industries GmbH
Hans-Bunte-Strasse 19
D-79108 Freiburg / DE
Inventor(s)01 / Pfeifer, Heinrich, Dipl.-Ing.
Vogesenstrasse 4
D-7809 Denzlingen / DE
02 / Schweer, Rainer, Dr. Ing.
Lärchenweg 14
D-7808 Waldkirch / DE
[1987/06]
Representative(s)(deleted)
[1989/10]
Former [1987/06]Morstadt, Volker, Dipl.-Ing.
Deutsche ITT Industries GmbH, Patentabteilung, Hans-Bunte-Strasse 19
D-79108 Freiburg / DE
Application number, filing date85109489.627.07.1985
[1987/06]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0210292
Date:04.02.1987
Language:DE
[1987/06]
Type: B1 Patent specification 
No.:EP0210292
Date:26.09.1990
Language:DE
[1990/39]
Search report(s)(Supplementary) European search report - dispatched on:EP06.05.1986
ClassificationIPC:H03D3/00
[1987/06]
CPC:
H03D3/006 (EP,US); H03D2200/005 (EP,US); H03D2200/0056 (EP,US);
H03D2200/0064 (EP,US)
Designated contracting statesDE,   FR,   GB,   IT,   NL [1987/06]
TitleGerman:Frequenzdemodulationsschaltung mit Nulldurchgangszählung[1987/06]
English:Frequency demodulation circuit with zero-crossing counter[1987/06]
French:Circuit de démodulation de fréquence avec comptage des passages par zéro[1987/06]
Examination procedure15.07.1987Examination requested  [1987/38]
15.06.1989Despatch of a communication from the examining division (Time limit: M04)
13.10.1989Reply to a communication from the examining division
15.11.1989Despatch of communication of intention to grant (Approval: No)
22.03.1990Despatch of communication of intention to grant (Approval: later approval)
29.03.1990Communication of intention to grant the patent
22.06.1990Fee for grant paid
22.06.1990Fee for publishing/printing paid
Opposition(s)27.06.1991No opposition filed within time limit [1991/38]
Fees paidRenewal fee
18.07.1987Renewal fee patent year 03
25.07.1988Renewal fee patent year 04
10.07.1989Renewal fee patent year 05
17.07.1990Renewal fee patent year 06
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Documents cited:Search[A]JP56140706  ;
 [A]US4378526  (CHAMPAGNE CLAUDE J J [CA], et al);
 [A]EP0099142  (PHILIPS PATENTVERWALTUNG [DE], et al);
 [A]EP0146652  (ITT IND GMBH DEUTSCHE [DE], et al)
 [A]  - PATENTS ABSTRACTS OF JAPAN, Band 6, Nr. 21 (E-93) [899], 6. Februar 1982; & JP - A - 56 140 706 (NIPPON DENSHIN DENWA KOSHA) 04-11-1981, & JP56140706 A 00000000
 [A]  - IBM TECHNICAL DISCLOSURE BULLETIN, Band 13, Nr. 11, April 1971, Seiten 3421-3422, New York, US; G.D. JONES, Jr.: "Digital frequency discriminator"
 [A]  - RCA TECHNICAL NOTES, Nr. 839, 4. Juni 1969, Seiten 1/2-2/2, RCA, Princeton, New York, US; D.P. WEBSTER et al.: "Correlation data demodulator"
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.