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Extract from the Register of European Patents

EP About this file: EP0199515

EP0199515 - Coupled cavity travelling wave tubes [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  17.10.1991
Database last updated on 20.09.2024
Most recent event   Tooltip19.04.2002Lapse of the patent in a contracting state
New state(s): SE
published on 05.06.2002  [2002/23]
Applicant(s)For all designated states
EEV LIMITED
106 Waterhouse Lane
Chelmsford, Essex, CM1 2QU / GB
[1989/47]
Former [1986/44]For all designated states
English Electric Valve Company Limited
106, Waterhouse Lane
Chelmsford, Essex, CM1 2QU / GB
Inventor(s)01 / King, Robin Charles Moorhouse
Proctors Farm Beauchamp Roding
Ongar Essex / GB
02 / Carter, Richard Geoffrey
Hawthorn House 4, Lindeth Road
Silverdale Carnforth Lancashire / GB
03 / Griggs, Alan
2, Sycamore Road
Heybridge Maldon Essex / GB
[1986/44]
Representative(s)Cockayne, Gillian
Marconi Intellectual Property
Crompton Close
Basildon
Essex SS14 3BA / GB
[N/P]
Former [1989/47]Cockayne, Gillian
GEC Patent Department Waterhouse Lane
Chelmsford, Essex CM1 2QX / GB
Former [1986/44]Rouse, David George
The General Electric Company, p.l.c. GEC Patent Department Waterhouse Lane
Chelmsford, Essex CM1 2QX / GB
Application number, filing date86302740.514.04.1986
[1986/44]
Priority number, dateGB1985001044324.04.1985         Original published format: GB 8510443
GB1986000229330.01.1986         Original published format: GB 8602293
[1986/44]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0199515
Date:29.10.1986
Language:EN
[1986/44]
Type: A3 Search report 
No.:EP0199515
Date:22.06.1988
Language:EN
[1988/25]
Type: B1 Patent specification 
No.:EP0199515
Date:12.12.1990
Language:EN
[1990/50]
Search report(s)(Supplementary) European search report - dispatched on:EP02.05.1988
ClassificationIPC:H01J23/24, H01J23/12, H01J25/00
[1988/24]
CPC:
H01J23/0873 (EP,US); H01J23/005 (EP,US); H01J23/24 (EP,US)
Former IPC [1986/44]H01J23/12, H01J25/00
Designated contracting statesAT,   BE,   CH,   DE,   FR,   IT,   LI,   LU,   NL,   SE [1986/44]
TitleGerman:Gekoppelte Hohlraum-Laufzeitröhren[1986/44]
English:Coupled cavity travelling wave tubes[1986/44]
French:Tubes à ondes progressives couplés par cavité[1986/44]
Examination procedure25.05.1988Examination requested  [1988/30]
19.07.1989Despatch of a communication from the examining division (Time limit: M04)
04.08.1989Reply to a communication from the examining division
05.03.1990Despatch of communication of intention to grant (Approval: Yes)
15.06.1990Communication of intention to grant the patent
10.07.1990Fee for grant paid
10.07.1990Fee for publishing/printing paid
Opposition(s)13.09.1991No opposition filed within time limit [1991/49]
Fees paidRenewal fee
14.04.1988Renewal fee patent year 03
17.03.1989Renewal fee patent year 04
12.03.1990Renewal 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  TooltipAT12.12.1990
BE12.12.1990
SE12.12.1990
CH30.04.1991
LI30.04.1991
LU30.04.1991
[2002/23]
Former [1999/52]AT12.12.1990
BE12.12.1990
CH30.04.1991
LI30.04.1991
LU30.04.1991
Former [1992/09]AT12.12.1990
BE12.12.1990
CH30.04.1991
LI30.04.1991
Former [1991/49]AT12.12.1990
BE12.12.1990
Former [1991/39]BE12.12.1990
Documents cited:SearchUS4057748  [ ] (DAVIS PETER ROBERT);
 FR2427680  [ ] (THOMSON CSF [FR]);
 GB1379184  [ ] (SPERRY RAND CORP);
 GB2119165  [ ] (SIEMENS AG);
 GB1080169  [ ] (ASS ELECT IND)
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.