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Extract from the Register of European Patents

EP About this file: EP0861499

EP0861499 - PROCESS FOR MAKING A FIELD EMITTER CATHODE USING A PARTICULATE FIELD EMITTER MATERIAL [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  25.08.2000
Database last updated on 03.10.2024
Most recent event   Tooltip04.01.2008Lapse of the patent in a contracting state
New state(s): IT
published on 06.02.2008  [2008/06]
Applicant(s)For all designated states
E. I. du Pont de Nemours and Company
1007 Market Street
Wilmington, DE 19898 / US
[N/P]
Former [1998/36]For all designated states
E.I. DU PONT DE NEMOURS AND COMPANY
1007 Market Street
Wilmington Delaware 19898 / US
Inventor(s)01 / BLANCHET-FINCHER, Graciela, Beatriz
2005 Fairwood Lane
Wilmington, DE 19810-3618 / US
02 / HOLSTEIN, William, Leo
1122 Elderon Drive
Wilmington, DE 19808-1923 / US
03 / SUBRAMONEY, Shekhar
425 Stella Drive
Hockessin, DE 19707-1922 / US
04 / HERRON, Norman
408 Apple Road
Newark, DE 19711-5118 / US
[1998/36]
Representative(s)Jones, Alan John
CARPMAELS & RANSFORD 43 Bloomsbury Square
London, WC1A 2RA / GB
[N/P]
Former [1998/36]Jones, Alan John
CARPMAELS & RANSFORD 43 Bloomsbury Square
London, WC1A 2RA / GB
Application number, filing date96939680.313.11.1996
[1998/36]
WO1996US18145
Priority number, dateUS19950006747P15.11.1995         Original published format: US 6747 P
[1998/36]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9718577
Date:22.05.1997
Language:EN
[1997/22]
Type: A1 Application with search report 
No.:EP0861499
Date:02.09.1998
Language:EN
The application published by WIPO in one of the EPO official languages on 22.05.1997 takes the place of the publication of the European patent application.
[1998/36]
Type: B1 Patent specification 
No.:EP0861499
Date:27.10.1999
Language:EN
[1999/43]
Search report(s)International search report - published on:EP22.05.1997
ClassificationIPC:H01J9/02
[1998/36]
CPC:
H01J9/025 (EP,US); H01J1/304 (KR); C01B32/05 (KR);
H01J9/02 (KR); H01J2201/30457 (EP,US)
Designated contracting statesDE,   ES,   FR,   GB,   IT [1998/36]
TitleGerman:VERFAHREN ZUR HERSTELLUNG EINER FELDEMISSIONSKATHODE MITTELS EINES TEILCHENFÖRMIGEN FELDEMISSIONSMATERIAL[1998/36]
English:PROCESS FOR MAKING A FIELD EMITTER CATHODE USING A PARTICULATE FIELD EMITTER MATERIAL[1998/36]
French:PROCEDE DE FABRICATION D'UNE CATHODE D'EMISSION DE CHAMP AU MOYEN D'UN MATERIAU EMETTEUR DE CHAMP PARTICULAIRE[1998/36]
Entry into regional phase29.04.1998National basic fee paid 
29.04.1998Designation fee(s) paid 
29.04.1998Examination fee paid 
Examination procedure20.05.1997Request for preliminary examination filed
International Preliminary Examining Authority: EP
29.04.1998Examination requested  [1998/36]
24.03.1999Despatch of communication of intention to grant (Approval: Yes)
14.05.1999Communication of intention to grant the patent
06.07.1999Fee for grant paid
06.07.1999Fee for publishing/printing paid
Opposition(s)28.07.2000No opposition filed within time limit [2000/41]
Fees paidRenewal fee
29.04.1998Renewal fee patent year 03
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Lapses during opposition  TooltipES27.10.1999
IT27.10.1999
[2008/06]
Former [2002/27]ES27.10.1999
Cited inInternational search[PX]EP0712146  (COMMISSARIAT ENERGIE ATOMIQUE [FR]) [PX] 13,14 * claims 5-10 *;
 [PX]WO9600974  (SILICON VIDEO CORP [US], et al) [PX] 13,14 * claims 19-46 *;
 [XA]WO9105361  (MOTOROLA INC [US]) [X] 13,14 * claims 1-10 * * claim 1 * [A] 1;
 [A]US5129850  (KANE ROBERT C [US], et al) [A] 1 * claim 1 *;
 [A]US5199918  (KUMAR NALIN [US]) [A] 1 * claim 1 *
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.