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EP0031034
European procedure
Extract from the Register of European Patents
EP About this file: EP0031034
| EP0031034 - Process for the adjustable carburizing or heating in a protective gas of steel work pieces [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 24.07.1986 Database last updated on 24.08.2024 | Most recent event Tooltip | 24.07.1986 | No opposition filed within time limit | published on 10.09.1986 [1986/37] | Applicant(s) | For all designated states Maag-Zahnräder und -Maschinen Aktiengesellschaft Hardstrasse 219 CH-8023 Zürich / CH | [1981/26] | Inventor(s) | 01 /
Wyss, Urs, dipl. Chem. Bockhornstrasse 17 CH-8047 Zürich / CH | [1981/26] | Representative(s) | Travnicek, Richard Maag Zahnräder & -Maschinen Aktiengesellschaft Patentabteilung Postfach CH-8023 Zürich / CH | [1985/30] |
| Former [1981/26] | Hotz, Klaus, Dipl.-El.-Ing. / ETH Maag Zahnräder und -Maschinen Aktiengesellschaft Patentabteilung Postfach CH-8023 Zürich / CH | Application number, filing date | 80107178.8 | 19.11.1980 | [1981/26] | Priority number, date | CH19790011303 | 20.12.1979 Original published format: CH 1130379 | [1981/26] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0031034 | Date: | 01.07.1981 | Language: | DE | [1981/26] | Type: | B1 Patent specification | No.: | EP0031034 | Date: | 25.09.1985 | Language: | DE | [1985/39] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 01.04.1981 | Classification | IPC: | C23C8/22, C21D1/76, C21D1/74 | [1985/39] | CPC: |
C23C8/22 (EP);
C21D1/76 (EP)
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| Former IPC [1981/26] | C23C11/12, C21D1/76, C21D1/74 | Designated contracting states | DE, FR, GB, IT, SE [1981/26] | Title | German: | Verfahren zum regelbaren Aufkohlen oder Erwärmen in Schutzgas von Werkstücken aus Stahl | [1981/26] | English: | Process for the adjustable carburizing or heating in a protective gas of steel work pieces | [1981/26] | French: | Procédé de carburation réglable ou chauffage sous gaz protecteur de pièces à usiner en acier | [1981/26] | Examination procedure | 09.12.1981 | New documents discovered [1982/06] | 21.12.1981 | Examination requested [1982/09] | 27.06.1983 | Despatch of a communication from the examining division (Time limit: M04) | 02.11.1983 | Reply to a communication from the examining division | 08.06.1984 | Despatch of a communication from the examining division (Time limit: M02) | 23.06.1984 | Reply to a communication from the examining division | 22.10.1984 | Despatch of communication of intention to grant (Approval: ) | 16.01.1985 | Communication of intention to grant the patent | 29.03.1985 | Fee for grant paid | 29.03.1985 | Fee for publishing/printing paid | Opposition(s) | 26.06.1986 | No opposition filed within time limit [1986/37] | Fees paid | Renewal fee | 20.10.1982 | Renewal fee patent year 03 | 27.10.1983 | Renewal fee patent year 04 | 25.10.1984 | Renewal 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. | Documents cited: | Search | GB816051 [ ] (RENAULT); | GB952363 [ ] (NISSAN MOTOR); | DE1208148 [ ] (HURTH MASCH ZAHNRAD CARL); | DE2163476 [ ] (JENAER GLASWERK SCHOTT & GEN); | US4175986 [ ] (EWALT LEONARD J [US], et al) | Examination | - Metal Progress, Bd. 114, Nov. 1978, S. 24-31 | - Härterei Technische MItteilungen, Bd. 35, 1980, nr. 6, S, 284-288 |