blank Quick help
blank Maintenance news

Scheduled maintenance

Regular maintenance outages:
between 05.00 and 05.15 hrs CET (Monday to Sunday).

Other outages
Availability
Register Forum

2022.02.11

More...
blank News flashes

News Flashes

New version of the European Patent Register – SPC proceedings information in the Unitary Patent Register.

2024-07-24

More...
blank Related links

Extract from the Register of European Patents

EP About this file: EP0305612

EP0305612 - Method for foam emplacement in carbon dioxide enhanced recovery [Right-click to bookmark this link]
StatusThe application is deemed to be withdrawn
Status updated on  14.01.1991
Database last updated on 22.08.2024
Most recent event   Tooltip07.07.2007Change - inventorpublished on 08.08.2007  [2007/32]
Applicant(s)For all designated states
UNION OIL COMPANY OF CALIFORNIA
1201 West 5th Street Los Angeles
California 90017 / US
[N/P]
Former [1989/10]For all designated states
UNION OIL COMPANY OF CALIFORNIA
1201 West 5th Street
Los Angeles California 90017 / US
Inventor(s)01 / Holm, LeRoy W.
601 Elinor Drive
Fullerton California 83138 / US
[1989/10]
Representative(s)Jack, Bruce J., et al
Forrester & Boehmert Pettenkoferstrasse 20-22
80336 München / DE
[N/P]
Former [1989/10]Jack, Bruce James, et al
FORRESTER & BOEHMERT Franz-Joseph-Strasse 38
D-80801 München / DE
Application number, filing date87307701.001.09.1987
[1989/10]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP0305612
Date:08.03.1989
Language:EN
[1989/10]
Search report(s)(Supplementary) European search report - dispatched on:EP06.06.1988
ClassificationIPC:E21B43/22, E21B43/25
[1989/10]
CPC:
C09K8/94 (EP,US); E21B43/164 (EP,US)
Designated contracting statesGB,   NL [1989/10]
TitleGerman:Verfahren zur Einbringung von Schaum bei der durch Kohlensäure unterstützten Ölgewinnung[1989/10]
English:Method for foam emplacement in carbon dioxide enhanced recovery[1989/10]
French:Méthode pour l'emplacement d'une mousse dans la récupération assistée par l'anhydride carbonique[1989/10]
File destroyed:02.03.1998
Examination procedure12.05.1989Examination requested  [1989/29]
13.03.1990Despatch of a communication from the examining division (Time limit: M04)
24.07.1990Application deemed to be withdrawn, date of legal effect  [1991/10]
13.09.1990Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time  [1991/10]
Fees paidRenewal fee
20.09.1989Renewal fee patent year 03
Penalty fee
Additional fee for renewal fee
01.10.199004   M06   Not yet paid
Opt-out from the exclusive  Tooltip
competence of the Unified
Patent Court
See the Register of the Unified Patent Court for opt-out data
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]US3529668  (BERNARD GEORGE G);
 [X]US3893511  (ROOT PAUL J);
 [X]US4572294  (DUERKSEN JOHN H [US], et al);
 [X]US4088190  (FISCHER PAUL W, et al);
 [X]US4113011  (BERNARD GEORGE G, et al)
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.