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Extract from the Register of European Patents

EP About this file: EP0316999

EP0316999 - Balanced voltage-current converter and double-balanced mixer circuit comprising such a converter [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  20.01.1994
Database last updated on 21.01.2025
Most recent event   Tooltip20.01.1994No opposition filed within time limitpublished on 09.03.1994 [1994/10]
Applicant(s)For all designated states
Koninklijke Philips Electronics N.V.
Groenewoudseweg 1
5621 BA Eindhoven / NL
[N/P]
Former [1989/21]For all designated states
Philips Electronics N.V.
Groenewoudseweg 1
NL-5621 BA Eindhoven / NL
Inventor(s)01 / Sempel, Adrianus
INT. OCTROOIBUREAU B.V. Prof. Holstlaan 6
NL-5656 AA Eindhoven / NL
[1989/21]
Representative(s)Peters, Rudolf Johannes, et al
Philips Intellectual Property & Standards
High Tech Campus 5
5656 AE Eindhoven / NL
[N/P]
Former [1989/21]Peters, Rudolf Johannes, et al
INTERNATIONAAL OCTROOIBUREAU B.V., Prof. Holstlaan 6
NL-5656 AA Eindhoven / NL
Application number, filing date88202514.110.11.1988
[1989/21]
Priority number, dateNL1987000271613.11.1987         Original published format: NL 8702716
[1989/21]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP0316999
Date:24.05.1989
Language:EN
[1989/21]
Type: B1 Patent specification 
No.:EP0316999
Date:17.03.1993
Language:EN
[1993/11]
Search report(s)(Supplementary) European search report - dispatched on:EP21.03.1989
ClassificationIPC:H03D7/14
[1989/21]
CPC:
H03D7/1425 (EP,US); H03D7/14 (KR); H03D7/1408 (EP,US);
H03D7/1433 (EP,US); H03D7/1441 (EP,US); H03D7/1458 (EP,US);
H03D7/1491 (EP,US) (-)
Designated contracting statesDE,   FR,   GB,   IT,   NL [1989/21]
TitleGerman:Symmetrischer Spannungs/Strom-Wandler und damit versehene doppelsymmetrische Mischschaltung[1989/21]
English:Balanced voltage-current converter and double-balanced mixer circuit comprising such a converter[1989/21]
French:Convertisseur de courant-tension équilibré et circuit mélangeur doublement équilibré muni d'un tel convertisseur[1989/21]
Examination procedure22.11.1989Examination requested  [1990/03]
27.04.1992Despatch of communication of intention to grant (Approval: Yes)
02.09.1992Communication of intention to grant the patent
30.09.1992Fee for grant paid
30.09.1992Fee for publishing/printing paid
Opposition(s)18.12.1993No opposition filed within time limit [1994/10]
Fees paidRenewal fee
27.11.1990Renewal fee patent year 03
26.11.1991Renewal fee patent year 04
30.11.1992Renewal fee patent year 05
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Lapses during opposition  TooltipNL17.03.1993
[1993/45]
Documents cited:Search[A]EP0090543  (FUJITSU LTD [JP]);
 [AP]EP0131337  (PHILIPS NV [NL]);
 [A]US4536717  (HAUGE RAYMOND C [US], et al)
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.