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Extract from the Register of European Patents

EP About this file: EP0257346

EP0257346 - Proportional automatic gain control [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  12.01.1995
Database last updated on 11.09.2024
Most recent event   Tooltip12.01.1995No opposition filed within time limitpublished on 01.03.1995 [1995/09]
Applicant(s)For all designated states
International Business Machines Corporation
New Orchard Road
Armonk, NY 10504 / US
[N/P]
Former [1988/09]For all designated states
International Business Machines Corporation
Old Orchard Road
Armonk, N.Y. 10504 / US
Inventor(s)01 / Pearce, Harold Brent
5922 Jacob Glen
Austin Texas 78727 / US
02 / West, Lynn Parker
10201 Pantera Ridge
Austin Texas 78759 / US
[1988/09]
Representative(s)Burt, Roger James, et al
IBM United Kingdom Limited Intellectual Property Department Hursley Park Winchester
Hampshire SO21 2JN / GB
[N/P]
Former [1994/10]Burt, Roger James, Dr., et al
IBM United Kingdom Limited Intellectual Property Department Hursley Park
Winchester Hampshire SO21 2JN / GB
Former [1990/09]Johansson, Lars E.
IBM Svenska AB Intellectual Property Department 4-01
S-163 92 Stockholm / SE
Former [1988/09]Ahlman, Bertel
IBM Svenska AB Intellectual Property Department
S-163 92 Stockholm / SE
Application number, filing date87111112.631.07.1987
[1988/09]
Priority number, dateUS1986090190429.08.1986         Original published format: US 901904
[1988/09]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0257346
Date:02.03.1988
Language:EN
[1988/09]
Type: A3 Search report 
No.:EP0257346
Date:14.02.1990
Language:EN
[1990/07]
Type: B1 Patent specification 
No.:EP0257346
Date:09.03.1994
Language:EN
[1994/10]
Search report(s)(Supplementary) European search report - dispatched on:EP28.12.1989
ClassificationIPC:H03G3/20, H03G7/00
[1988/09]
CPC:
H03G3/3089 (EP,US); H03G7/007 (EP,US)
Designated contracting statesDE,   FR,   GB [1988/09]
TitleGerman:Proportionelle automatische Pegelkontrolle[1988/09]
English:Proportional automatic gain control[1988/09]
French:Contrôle de gain automatique du type proportionnel[1988/09]
Examination procedure16.06.1988Examination requested  [1988/33]
26.03.1992Despatch of a communication from the examining division (Time limit: M06)
24.09.1992Reply to a communication from the examining division
21.05.1993Despatch of communication of intention to grant (Approval: Yes)
01.09.1993Communication of intention to grant the patent
21.09.1993Fee for grant paid
21.09.1993Fee for publishing/printing paid
Opposition(s)10.12.1994No opposition filed within time limit [1995/09]
Fees paidRenewal fee
25.07.1989Renewal fee patent year 03
23.07.1990Renewal fee patent year 04
18.07.1991Renewal fee patent year 05
25.07.1992Renewal fee patent year 06
16.07.1993Renewal fee patent year 07
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Documents cited:Search[X]US3983381  (JONES JR GARDNER D);
 [A]US3969683  (FABRICIUS WAYNE NIXON);
 [A]US3562504  (HARRIS RALPH A);
 [AD]US4191995  (FARROW CECIL W [US]);
 [A]EP0117662  (HAZELTINE CORP [US]);
 [A]EP0218870  (IBM [US])
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.