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EP0229224
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EP About this file: EP0229224
| EP0229224 - Apparatus and method for froth flotation [Right-click to bookmark this link] | Status | The application has been refused Status updated on 17.07.1991 Database last updated on 31.08.2024 | Most recent event Tooltip | 07.07.2007 | Change - inventor | published on 08.08.2007 [2007/32] | Applicant(s) | For all designated states THE STANDARD OIL COMPANY 200 Public Square, 36-F-3454 Cleveland Ohio 44114 / US | [N/P] |
| Former [1987/30] | For all designated states THE STANDARD OIL COMPANY 200 Public Square, 36-F-3454 Cleveland Ohio 44114 / US | Inventor(s) | 01 /
Szentlaszloi, Alex RD 1, Box 353 Hockessin Delaware 19707 / US | 02 /
McDonnell, Francis J. 2743 Harmil Road Broomall Pennsylvania 19008 / US | 03 /
Duttera, James V. 1006 Polk Drive Springfield Pennsylvania 19064 / US | [1987/30] | Representative(s) | Hoffmann, Klaus, et al Hoffmann Eitle, Patent- und Rechtsanwälte, Postfach 81 04 20 81904 München / DE | [N/P] |
| Former [1989/17] | Hoffmann, Klaus, Dr. rer. nat., et al Hoffmann, Eitle & Partner Patentanwälte Postfach 81 04 20 D-81904 München / DE | ||
| Former [1987/30] | Hoffmann, Klaus, Dr. rer. nat. Hoffmann, Eitle & Partner, Patentanwälte, Postfach 81 04 20 D-81925 München / DE | Application number, filing date | 86113124.1 | 24.09.1986 | [1987/30] | Priority number, date | US19850803099 | 27.11.1985 Original published format: US 803099 | [1987/30] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0229224 | Date: | 22.07.1987 | Language: | EN | [1987/30] | Type: | A3 Search report | No.: | EP0229224 | Date: | 14.06.1989 | Language: | EN | [1989/24] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 24.04.1989 | Classification | IPC: | B03D1/14 | [1987/30] | CPC: |
B03D1/02 (EP);
B03D1/028 (EP);
B03D1/082 (EP);
B03D1/1406 (EP);
B03D1/1412 (EP);
B03D1/1456 (EP);
B03D1/1462 (EP)
(-)
| Designated contracting states | AT, BE, DE, FR, GB, IT, NL, SE [1987/30] | Title | German: | Verfahren und Vorrichtung zur Schaumflotation | [1987/30] | English: | Apparatus and method for froth flotation | [1987/30] | French: | Procédé et appareil de flottation par formation d'écume | [1987/30] | File destroyed: | 02.03.1998 | Examination procedure | 12.06.1989 | Examination requested [1989/32] | 04.05.1990 | Despatch of a communication from the examining division (Time limit: M04) | 04.09.1990 | Reply to a communication from the examining division | 23.10.1990 | Despatch of communication of intention to grant (Approval: ) | 08.04.1991 | Despatch of communication that the application is refused, reason: formalities examination [1991/36] | 18.04.1991 | Application refused, date of legal effect [1991/36] | Fees paid | Renewal fee | 22.08.1988 | Renewal fee patent year 03 | 23.08.1989 | Renewal fee patent year 04 | 20.08.1990 | 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 | [AD]US3351199 (ANDREJS ZVEJNIEKS); | [A]US2999595 (SCHOELD EDMUND A, et al); | [A]FR2248086 (ERPAC [FR]); | [A]EP0057445 (GULF & WESTERN MFG CO [US]); | [AD]US2416066 (PHELPS DONALD S); | [AD]US2765081 (FRANK EVANS LESLIE, et al) |