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Extract from the Register of European Patents

EP About this file: EP0280821

EP0280821 - Interface between processor and special instruction processor in digital data processing system [Right-click to bookmark this link]
StatusThe application has been refused
Status updated on  19.11.1994
Database last updated on 02.07.2024
Most recent event   Tooltip07.07.2007Change - inventorpublished on 08.08.2007  [2007/32]
Applicant(s)For all designated states
DIGITAL EQUIPMENT CORPORATION
146 Main Street
Maynard, MA 01754 / US
[1988/36]
Inventor(s)01 / Rubinfeld, Paul I.
6 Heard Road
Wayland Massachusetts 01778 / US
[1988/36]
Representative(s)Mongrédien, André, et al
c/o SOCIETE DE PROTECTION DES INVENTIONS 25, rue de Ponthieu
F-75008 Paris / FR
[1988/36]
Application number, filing date87401943.328.08.1987
[1988/36]
Priority number, dateUS1987001751724.02.1987         Original published format: US 17517
[1988/36]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0280821
Date:07.09.1988
Language:EN
[1988/36]
Type: A3 Search report 
No.:EP0280821
Date:07.11.1990
Language:EN
[1990/45]
Search report(s)(Supplementary) European search report - dispatched on:EP17.09.1990
ClassificationIPC:G06F9/38
[1988/36]
CPC:
G06F9/3877 (EP); G06F13/00 (KR); G06F9/3885 (EP)
Designated contracting statesAT,   BE,   CH,   DE,   ES,   FR,   GB,   GR,   IT,   LI,   LU,   NL,   SE [1988/36]
TitleGerman:Schnittstelle zwischen einem Prozessor und einem Spezialbefehl-Prozessor in einer digitalen Datenverarbeitungsanlage[1988/36]
English:Interface between processor and special instruction processor in digital data processing system[1988/36]
French:Interface entre un processeur et un processeur d'instructions spéciales dans un système de traitement numérique des données[1988/36]
File destroyed:15.01.2000
Examination procedure17.12.1990Examination requested  [1991/07]
11.03.1992Despatch of a communication from the examining division (Time limit: M04)
13.06.1992Reply to a communication from the examining division
07.12.1992Despatch of a communication from the examining division (Time limit: M04)
24.03.1993Reply to a communication from the examining division
04.03.1994Despatch of communication of intention to grant (Approval: )
12.08.1994Despatch of communication that the application is refused, reason: formalities examination [1995/02]
22.08.1994Application refused, date of legal effect [1995/02]
Fees paidRenewal fee
22.08.1989Renewal fee patent year 03
18.07.1990Renewal fee patent year 04
17.07.1991Renewal fee patent year 05
17.07.1992Renewal fee patent year 06
14.07.1993Renewal fee patent year 07
Penalty fee
Additional fee for renewal fee
31.08.199408   M06   Not yet paid
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Documents cited:Search[Y]EP0092429  (DIGITAL EQUIPMENT CORP [US])
 [Y]  - NEW ELECTRONICS, vol. 18, no. 19, October 1985, pages 66,69,70,72, London, GB; J.C. MATHON: "Interfacing the 32081 as a floating point peripheral"
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.