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EP0012974
European procedure
Extract from the Register of European Patents
EP About this file: EP0012974
| EP0012974 - Method for enciphering data blocks of a given length [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 09.04.1984 Database last updated on 03.06.2024 | Most recent event Tooltip | 09.04.1984 | No opposition filed within time limit | published on 13.06.1984 [1984/24] | Applicant(s) | For all designated states International Business Machines Corporation New Orchard Road Armonk, NY 10504 / US | [N/P] |
| Former [1980/14] | For all designated states International Business Machines Corporation Old Orchard Road Armonk, N.Y. 10504 / US | Inventor(s) | 01 /
Matyas, Stephen Michael RD 5, Box 19F Kingston New York 12401 / US | 02 /
Meyer, Carl Heinz Wilhelm Route 28, RD 2 Box 223-11 Kingston, New York 12401 / US | 03 /
Tuckerman III, Louis Bryant 121 Schrade Road Briarcliff Manor New York 10510 / US | [1980/14] | Representative(s) | Möhlen, Wolfgang IBM Corporation Säumerstrasse 4 8803 Rüschlikon / CH | [N/P] |
| Former [1983/21] | Möhlen, Wolfgang C., Dipl.-Ing. IBM Corporation Säumerstrasse 4 CH-8803 Rüschlikon / CH | ||
| Former [1980/14] | Aepli, Leo B., Dipl.-Ing. Säumerstrasse 4 CH-8803 Rüschlikon/ZH / CH | Application number, filing date | 79105225.1 | 17.12.1979 | [1980/14] | Priority number, date | US19780974596 | 29.12.1978 Original published format: US 974596 | [1980/14] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0012974 | Date: | 09.07.1980 | Language: | DE | [1980/14] | Type: | B1 Patent specification | No.: | EP0012974 | Date: | 25.05.1983 | Language: | DE | [1983/21] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 28.04.1980 | Classification | IPC: | H04L9/02 | [1980/14] | CPC: |
H04L9/0637 (EP,US);
H04L2209/12 (EP,US)
| Designated contracting states | DE, FR, GB [1980/14] | Title | German: | Verfahren zur Chiffrierung von Datenblöcken einer vorgegebenen Länge | [1980/14] | English: | Method for enciphering data blocks of a given length | [1980/14] | French: | Procédé de chiffrage de blocs de données ayant une longueur prédéterminée | [1980/14] | File destroyed: | 02.03.1998 | Examination procedure | 29.10.1980 | Examination requested [1981/01] | 30.11.1981 | Despatch of a communication from the examining division (Time limit: M04) | 29.03.1982 | Reply to a communication from the examining division | 23.07.1982 | Despatch of communication of intention to grant (Approval: ) | 18.10.1982 | Communication of intention to grant the patent | 05.11.1982 | Fee for grant paid | 05.11.1982 | Fee for publishing/printing paid | Opposition(s) | 28.02.1984 | No opposition filed within time limit [1984/24] | Fees paid | Renewal fee | 02.12.1981 | Renewal fee patent year 03 | 20.12.1982 | Renewal fee patent year 04 |
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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. | Documents cited: | Search | US4078152 [ ] (TUCKERMAN III LOUIS BRYANT) | [ ] - 1977 ELECTRO CONFERENCE RECORD, 1977, El Segundo, US, S. JEFFERY et al.: "Data encryption", Seiten 30/4-1 bis 30/4-6 * Seite 30/4-5, linke Spalte, Zeile 45 bis rechte Spalte, Zeile 13 * | [ ] - 1978 NATIONAL TELECOMMUNICATIONS CONFERENCE RECORD, Band 2, 3-6, Dezember 1978, Birmingham, US, FENICHEL: "Data communications encryption - A description of applications and report on standards progress", Seiten 26.2.1 bis 26.2.5 * Seite 26.2.1, rechte Spalte, Absatz 2; Seite 26.2.2, rechte Spalte, Absatz 1 * |