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EP0001971
European procedure
Extract from the Register of European Patents
EP About this file: EP0001971
| EP0001971 - Process for preparing hydroxylammonium salts in reactors made of stainless steel [Right-click to bookmark this link] | Status | Patent maintained as amended Status updated on 23.05.1987 Database last updated on 11.04.2026 | Most recent event Tooltip | 23.05.1987 | Patent maintained (B2 publication) | published on 08.07.1987 [1987/28] | Applicant(s) | For all designated states BASF Aktiengesellschaft Carl-Bosch-Strasse 38 67063 Ludwigshafen / DE | [N/P] | Inventor(s) | 01 /
Rapp, Guenther, Dr. Mundenheimer Strasse 174 D-6700 Ludwigshafen / DE | 02 /
Thomas, Erwin Borngasse 12 D-6713 Freinsheim / DE | 03 /
Muenster, Rolf Herrmann-Ehlers-Strasse 2 D-6720 Speyer / DE | [N/P] | Application number, filing date | 78100975.8 | 25.09.1978 | Priority number, date | DE19772743346 | 27.09.1977 Original published format: DE 2743346 | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0001971 | Date: | 30.05.1979 | Language: | DE | [N/P] | Type: | B1 Patent specification | No.: | EP0001971 | Date: | 05.08.1981 | Language: | DE | [1981/31] | Type: | B2 New European patent specification | No.: | EP0001971 | Date: | 08.07.1987 | Language: | DE | [1987/28] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 30.03.1979 | Classification | IPC: | C01B21/14, B01J19/02, C22C38/44 | [1981/31] | CPC: |
C22C30/00 (EP,US);
C01B21/1418 (EP,US)
|
| Former IPC [1981/31] | C01B21/14, C22C38/44 | Designated contracting states | BE, CH, DE, FR, GB, NL | Title | German: | Verfahren zur Herstellung von Hydroxylammoniumsalzen in Reaktionsgefässen aus Edelstahl | English: | Process for preparing hydroxylammonium salts in reactors made of stainless steel | French: | Procédé de préparation de sels d'hydroxylammonium dans des réacteurs en acier inoxydable | Examination procedure | 23.05.1979 | Examination requested | 01.08.1979 | Despatch of a communication from the examining division (Time limit: {0}) | 25.02.1980 | Despatch of a communication from the examining division (Time limit: M06) | 15.07.1980 | Reply to a communication from the examining division | 13.01.1981 | Despatch of communication of intention to grant (Approval: ) | 11.02.1981 | Communication of intention to grant the patent | 19.03.1981 | Fee for grant paid | 19.03.1981 | Fee for publishing/printing paid | Appeal following examination | Appeal received No. T217/84 | Opposition(s) | Opponent(s) | 01
22.04.1982
17.05.1982
ADMISSIBLE Naamloze Vennootschap DSM Het Overloon 1 NL-6411 TE Heerlen / NL Opponents representative Hoogstraten, Willem Cornelis R. DSM Patents & Trademarks Office Geleen Postbus 9 6160 MA Geleen / NL | [N/P] |
| Former [1986/44] | |||
| Opponent(s) | 01
22.04.1982
17.05.1982
ADMISSIBLE Naamloze Vennootschap DSM Het Overloon 1 NL-6411 TE Heerlen / NL Opponents representative Hoogstraten, Willem Cornelis Roeland OCTROOIBUREAU DSM Postbus 9 NL-6160 MA Geleen / NL | ||
| Former [1982/36] | |||
| Opponent(s) | 01
22.04.1982
17.05.1982
ADMISSIBLE Naamloze Vennootschap DSM Het Overloon 1 NL-6411 TE Heerlen / NL Opponents representative Pinckaers, August René OCTROOIBUREAU DSM Postbus 9 NL-6160 MA Geleen / NL | ||
| Former [1982/26] | |||
| Opponent(s) | 01
22.04.1982
Naamloze Vennootschap DSM Het Overloon 1 NL-6411 TE Heerlen / NL Opponents representative Pinckaers, August René OCTROOIBUREAU DSM Postbus 9 NL-6160 MA Geleen / NL | 14.06.1982 | Invitation to proprietor to file observations on the notice of opposition | 13.10.1982 | Reply of patent proprietor to notice(s) of opposition | 17.08.1983 | Despatch of a communication from the opposition division (Time limit: M04) | 22.11.1983 | Reply to a communication from the opposition division | 02.01.1987 | Despatch of communication that the patent will be maintained as amended | 08.04.1987 | Fee for printing new specification paid | Appeal following opposition | 06.09.1984 | Appeal received No. T0217/84 | Fees paid | Renewal fee | 16.09.1980 | Renewal fee patent year 03 |
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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 | [X] DE676 (G W COPELAND et al.) [X] | [X] DE896362 (DEUTSCHE EDELSTAHLWERKE AG et al.) [X] | [A] DE2100036 [A] | [A] DE968363 (DU PONT et al.) [A] | STAHL-EISEN-LISTE, 3. Auflage, 1969, Verlag STAHLEISEN, D}sseldorf, Seiten 112-113; Werkstoffnummer: 1.4406 und 1.4429 | [A] DEW-TECHNISCHE BERICHTE, 7. Band, 1972, Heft 2, K. BUNGARDT u.a.: "Einfluss von Stickstoff auf die Eigenschaften austenitischer Chrom-Nickel- und Chrom-Nickel-Molybd{n-(Kupfer)-St{hle", Seiten 71-90 [A] |