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EP0402710
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EP About this file: EP0402710
| EP0402710 - Interpolymers for barium sulphate inbihition [Right-click to bookmark this link] | Status | The application is deemed to be withdrawn Status updated on 27.01.1994 Database last updated on 22.08.2024 | Most recent event Tooltip | 27.01.1994 | Application deemed to be withdrawn | published on 16.03.1994 [1994/11] | Applicant(s) | For all designated states National Starch and Chemical Investment Holding Corporation 501 Silverside Road Wilmington, Delaware 19809 / US | [1990/51] | Inventor(s) | 01 /
Bainbridge, Peter 8 St. John's Close, Stefen Hill Estate Daventry, Northants, NN11 4SH / GB | 02 /
Rowan, Vincent 14 Cordelia Way Rugby CV22 6JU, Warwickshire / GB | [1990/51] | Representative(s) | Hagemann, Heinrich, et al Meissner Bolte Patentanwälte Rechtsanwälte Partnerschaft mbB Widenmayerstrasse 47 80538 München / DE | [N/P] |
| Former [1990/51] | Hagemann, Heinrich, Dr. rer. nat., Dipl.-Chem., et al Patentanwälte Hagemann & Kehl Postfach 86 03 29 D-81630 München / DE | Application number, filing date | 90110387.9 | 31.05.1990 | [1990/51] | Priority number, date | US19890365074 | 12.06.1989 Original published format: US 365074 | [1990/51] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0402710 | Date: | 19.12.1990 | Language: | EN | [1990/51] | Type: | A3 Search report | No.: | EP0402710 | Date: | 27.02.1991 | Language: | EN | [1991/09] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 08.01.1991 | Classification | IPC: | E21B37/06, C02F5/10 | [1990/51] | CPC: |
C02F5/12 (EP,US);
C02F5/10 (EP,US);
Y10S507/927 (EP,US)
| Designated contracting states | BE, DE, FR, GB, IT, LU, NL, SE [1990/51] | Title | German: | Interpolymere für die Bariumsulphathemmung | [1990/51] | English: | Interpolymers for barium sulphate inbihition | [1990/51] | French: | Interpolymères pour inhiber la formation de sulfate de baryum | [1990/51] | File destroyed: | 15.01.2000 | Examination procedure | 14.12.1990 | Examination requested [1991/06] | 02.04.1992 | Despatch of a communication from the examining division (Time limit: M04) | 12.08.1992 | Reply to a communication from the examining division | 18.09.1992 | Despatch of a communication from the examining division (Time limit: M06) | 23.03.1993 | Reply to a communication from the examining division | 12.05.1993 | Despatch of a communication from the examining division (Time limit: M04) | 23.09.1993 | Application deemed to be withdrawn, date of legal effect [1994/11] | 21.10.1993 | Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time [1994/11] | Fees paid | Renewal fee | 21.05.1992 | Renewal fee patent year 03 | 27.05.1993 | 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 | [X]SU829593 ; | [A]EP0032041 (PFIZER [US]); | [A]GB2087862 (DEARBORN CHEMICALS LTD); | [X]DE3213296 (KAO CORP [JP]); | [X]EP0171048 (GOODRICH CO B F [US]) | [X] - CHEMICAL ABSTRACTS, vol. 95, no. 7, October 1981, page 158, abstract no. 118145r, Columbus, Ohio, US; & SU-A-829 593 (ALL-UNION SCIENTIFIC-RESEARCH INSTITUTE OF THE WORKING AND MAINTENANCE OF OIL FIELD PIPELINES) 15-05-1981, & SU829593 A 00000000 |