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Extract from the Register of European Patents

EP About this file: EP0356986

EP0356986 - Buffer circuit for logic level conversion [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  16.02.1995
Database last updated on 11.09.2024
Most recent event   Tooltip26.07.1995Lapse of the patent in a contracting state
New state(s): GB
published on 13.09.1995 [1995/37]
Applicant(s)For all designated states
FUJITSU LIMITED
1015, Kamikodanaka, Nakahara-ku Kawasaki-shi
Kanagawa 211 / JP
[N/P]
Former [1990/10]For all designated states
FUJITSU LIMITED
1015, Kamikodanaka, Nakahara-ku
Kawasaki-shi, Kanagawa 211 / JP
Inventor(s)01 / Kajii, Kiyoshi
1964-2-201, Nurumizu
Atsugi-shi Kanagawa, 243 / JP
[1990/10]
Representative(s)Schmidt-Evers, Jürgen, et al
Mitscherlich PartmbB
Patent- und Rechtsanwälte
Postfach 33 06 09
80066 München / DE
[N/P]
Former [1990/10]Schmidt-Evers, Jürgen, Dipl.-Ing., et al
Patentanwälte Mitscherlich & Partner Postfach 33 06 09
D-80066 München / DE
Application number, filing date89115900.629.08.1989
[1990/10]
Priority number, dateJP1988021673230.08.1988         Original published format: JP 21673288
[1990/10]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0356986
Date:07.03.1990
Language:EN
[1990/10]
Type: A3 Search report 
No.:EP0356986
Date:19.09.1990
Language:EN
[1990/38]
Type: B1 Patent specification 
No.:EP0356986
Date:13.04.1994
Language:EN
[1994/15]
Search report(s)(Supplementary) European search report - dispatched on:EP02.08.1990
ClassificationIPC:H03K19/094
[1990/10]
CPC:
H03K19/018535 (EP,US); H03K19/00 (KR); H03K19/00384 (EP,US);
H03K19/01707 (EP,US)
Designated contracting statesDE,   FR,   GB [1990/10]
TitleGerman:Pufferschaltung für logische Pegelumsetzung[1990/10]
English:Buffer circuit for logic level conversion[1990/10]
French:Circuit tampon pour la conversion de niveaux logiques[1990/10]
Examination procedure15.11.1990Examination requested  [1991/02]
28.07.1992Despatch of a communication from the examining division (Time limit: M04)
30.11.1992Reply to a communication from the examining division
10.12.1992Despatch of a communication from the examining division (Time limit: M05)
07.05.1993Reply to a communication from the examining division
05.07.1993Despatch of communication of intention to grant (Approval: Yes)
07.10.1993Communication of intention to grant the patent
16.11.1993Fee for grant paid
16.11.1993Fee for publishing/printing paid
Opposition(s)14.01.1995No opposition filed within time limit [1995/14]
Fees paidRenewal fee
30.08.1991Renewal fee patent year 03
31.08.1992Renewal fee patent year 04
30.08.1993Renewal fee patent year 05
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Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Lapses during opposition  TooltipDE13.04.1994
GB29.08.1994
[1995/37]
Former [1995/03]DE13.04.1994
Documents cited:Search[A]JP5550743  ;
 [AP]US4767951  (CORNISH ELDON C [US], et al)
 [A]  - PROCEEDINGS OF THE IEEE 1986 CUSTOM INTEGRATED CIRCUITS CONFERENCE, Rochester, New York, 12th - 15th May 1986, pages 508-512, IEEE, New York, US; D.P. LAUDE: "An ECL compatible GaAs 504 4-input nor gate array"
 [A]  - PATENT ABSTRACTS OF JAPAN, vol. 4, no. 83 (E-15)[565], 14th June 1980, page 129 E 15; & JP-A-55 50 743 (FUJITSU K.K.) 12-04-1980, & JP5550743 A 00000000
ExaminationEP0154337
 EP0292713
 EP0313810
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.