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Extract from the Register of European Patents

EP About this file: EP0550163

EP0550163 - Circuit architecture for supporting multiple-channel DMA operations [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  02.06.2000
Database last updated on 13.07.2024
Most recent event   Tooltip02.06.2000No opposition filed within time limitpublished on 19.07.2000 [2000/29]
Applicant(s)For all designated states
SUN MICROSYSTEMS, INC.
2550 Garcia Avenue
Mountain View, CA 94043 / US
[1993/27]
Inventor(s)01 / Sodos, Martin
3535 Feller Avenue
San Jose, California 95127 / US
[1993/27]
Representative(s)Wombwell, Francis
Forresters
15, Hamilton Square
Birkenhead
Merseyside CH41 6BR / GB
[N/P]
Former [1993/27]Wombwell, Francis
Potts, Kerr & Co. 15, Hamilton Square
Birkenhead Merseyside L41 6BR / GB
Application number, filing date92311130.607.12.1992
[1993/27]
Priority number, dateUS1991081476530.12.1991         Original published format: US 814765
[1993/27]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP0550163
Date:07.07.1993
Language:EN
[1993/27]
Type: B1 Patent specification 
No.:EP0550163
Date:04.08.1999
Language:EN
[1999/31]
Search report(s)(Supplementary) European search report - dispatched on:EP20.04.1993
ClassificationIPC:G06F13/28, G06F5/06
[1993/27]
CPC:
G06F13/28 (EP,KR,US); G06F5/065 (EP,US)
Designated contracting statesDE,   FR,   GB,   IT [1993/27]
TitleGerman:Schaltungsarchitektur zum mehrkanaligen DMA-Betrieb[1993/27]
English:Circuit architecture for supporting multiple-channel DMA operations[1993/27]
French:Architecture de circuit pour l'opération à canaux multiples d'accès direct en mémoire[1993/27]
Examination procedure30.12.1993Examination requested  [1994/09]
19.12.1996Despatch of a communication from the examining division (Time limit: M04)
22.04.1997Reply to a communication from the examining division
16.10.1997Despatch of a communication from the examining division (Time limit: M04)
16.02.1998Reply to a communication from the examining division
31.08.1998Despatch of communication of intention to grant (Approval: Yes)
21.01.1999Communication of intention to grant the patent
17.04.1999Fee for grant paid
17.04.1999Fee for publishing/printing paid
Opposition(s)05.05.2000No opposition filed within time limit [2000/29]
Fees paidRenewal fee
30.11.1994Renewal fee patent year 03
27.11.1995Renewal fee patent year 04
22.11.1996Renewal fee patent year 05
24.11.1997Renewal fee patent year 06
20.11.1998Renewal fee patent year 07
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Documents cited:Search[XP]EP0486145  (IBM [US]);
 [Y]WO8400222  (ELXSI [US]);
 [A]WO9111767  (AUSPEX SYSTEMS INC [US]);
 [A]EP0432978  (IBM [US])
 [Y]  - IBM TECHNICAL DISCLOSURE BULLETIN vol. 32, no. 8A, January 1990, NEW YORK US pages 418 - 421 'high speed buffer for n x 1 packet multiplexing'
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.