blank Quick help
blank Maintenance news

Scheduled maintenance

Regular maintenance outages:
between 05.00 and 05.15 hrs CET (Monday to Sunday).

Other outages
Availability
Register Forum

2022.02.11

More...
blank News flashes

News Flashes

New version of the European Patent Register – SPC proceedings information in the Unitary Patent Register.

2024-07-24

More...
blank Related links

Extract from the Register of European Patents

EP About this file: EP0540052

EP0540052 - Ripple-free phase detector using two sample-and-hold circuits [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  04.06.1999
Database last updated on 31.08.2024
Most recent event   Tooltip04.06.1999No opposition filed within time limitpublished on 21.07.1999 [1999/29]
Applicant(s)For all designated states
NEC Corporation
7-1, Shiba 5-chome Minato-ku
Tokyo 108-8001 / JP
[N/P]
Former [1993/18]For all designated states
NEC CORPORATION
7-1, Shiba 5-chome Minato-ku
Tokyo / JP
Inventor(s)01 / Ichihara, Masaki, c/o NEC CORPORATION
7-1, Shiba 5-chome, Minato-ku
Tokyo / JP
[1993/18]
Representative(s)Vossius & Partner Patentanwälte Rechtsanwälte mbB
Siebertstrasse 3
81675 München / DE
[N/P]
Former [1995/52]VOSSIUS & PARTNER
Postfach 86 07 67
D-81634 München / DE
Former [1993/18]VOSSIUS & PARTNER
P.O. Box 86 07 67
D-81634 München / DE
Application number, filing date92118718.302.11.1992
[1993/18]
Priority number, dateJP1991031343731.10.1991         Original published format: JP 31343791
[1993/18]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP0540052
Date:05.05.1993
Language:EN
[1993/18]
Type: B1 Patent specification 
No.:EP0540052
Date:29.07.1998
Language:EN
[1998/31]
Search report(s)(Supplementary) European search report - dispatched on:EP26.02.1993
ClassificationIPC:H03D13/00
[1993/18]
CPC:
H03D13/006 (EP,US)
Designated contracting statesDE,   ES,   FR,   GB,   IT,   NL,   SE [1993/18]
TitleGerman:Brummspannungsfreier Phasendetektor unter Verwendung von zwei Abtast-Halteschaltungen[1998/31]
English:Ripple-free phase detector using two sample-and-hold circuits[1993/18]
French:Détecteur de phase sans ondulation, utilisant deux circuits à échantillonnage[1993/18]
Former [1993/18]Störspannungsfreier Phasendetektor unter Verwendung von zwei Abtast-Halteschaltungen
Examination procedure05.03.1993Examination requested  [1993/18]
27.12.1995Despatch of a communication from the examining division (Time limit: M06)
08.07.1996Reply to a communication from the examining division
25.03.1997Despatch of communication of intention to grant (Approval: No)
01.10.1997Despatch of communication of intention to grant (Approval: later approval)
28.01.1998Communication of intention to grant the patent
04.03.1998Fee for grant paid
04.03.1998Fee for publishing/printing paid
Opposition(s)30.04.1999No opposition filed within time limit [1999/29]
Fees paidRenewal fee
29.11.1994Renewal fee patent year 03
29.11.1995Renewal fee patent year 04
29.11.1996Renewal fee patent year 05
28.11.1997Renewal fee patent year 06
Opt-out from the exclusive  Tooltip
competence of the Unified
Patent Court
See the Register of the Unified Patent Court for opt-out data
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[X]EP0414392  (PLESSEY OVERSEAS [GB]);
 [A]GB2054298  (PHILIPS NV);
 [A]US5006819  (BUCHAN WILLIAM A [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.