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Extract from the Register of European Patents

EP About this file: EP0652272

EP0652272 - Glycols as internal phase in oil well drilling fluids [Right-click to bookmark this link]
StatusThe application has been withdrawn
Status updated on  02.08.1995
Database last updated on 04.11.2024
Most recent event   Tooltip02.08.1995Withdrawal of applicationpublished on 20.09.1995 [1995/38]
Applicant(s)For all designated states
M-I DRILLING FLUIDS COMPANY
5950 North Course Houston
Texas 77072 / US
[N/P]
Former [1995/19]For all designated states
M-I DRILLING FLUIDS COMPANY
5950 North Course
Houston, Texas 77072 / US
Inventor(s)01 / Patel, Arvind D.
6511 Marisol
Houston, Texas 77083 / US
[1995/19]
Representative(s)Dost, Wolfgang, et al
Bardehle Pagenberg Partnerschaft
Patentanwälte, Rechtsanwälte
Postfach 86 06 20
81633 München / DE
[N/P]
Former [1995/19]Dost, Wolfgang, Dr.rer.nat., Dipl.-Chem., et al
Patent- und Rechtsanwälte Bardehle . Pagenberg . Dost . Altenburg . Frohwitter . Geissler & Partner Postfach 86 06 20
D-81633 München / DE
Application number, filing date94117442.704.11.1994
[1995/19]
Priority number, dateUS1993014774304.11.1993         Original published format: US 147743
[1995/19]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP0652272
Date:10.05.1995
Language:EN
[1995/19]
Search report(s)(Supplementary) European search report - dispatched on:EP09.02.1995
ClassificationIPC:C09K7/06
[1995/19]
CPC:
C09K8/34 (EP,US)
Designated contracting statesAT,   BE,   CH,   DE,   DK,   ES,   FR,   GB,   GR,   IE,   IT,   LI,   LU,   MC,   NL,   PT,   SE [1995/19]
TitleGerman:Glycole als Zwischenphase in Bohrfüssigkeiten[1995/19]
English:Glycols as internal phase in oil well drilling fluids[1995/19]
French:Glycols comme phase interne de fluides de forage[1995/19]
File destroyed:12.09.2001
Examination procedure27.07.1995Application withdrawn by applicant  [1995/38]
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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[Y]GB2223255  (SHELL INT RESEARCH [NL]) [Y] 1,7-14,18-22 * page 2, line 19 - line 27 * * page 2, line 33 - page 3, line 30 * * page 4, line 4 - line 12 * * page 4, line 23 - line 26 * * page 5, line 3 - line 22; tables 1-3 *;
 [YP]WO9416030  (MI DRILLING FLUIDS CO [US]) [YP] 1-6,8-10,13-20,22 * page 4, line 18 - page 5, line 27 * * page 7, line 16 - page 8, line 34 * * page 10, line 25 - page 11, line 27 * * claims 1-26 *;
 [Y]EP0449257  (MI DRILLING FLUIDS CO [US]) [Y] 1-6,8-10,13-20,22 * page 5, line 46 - page 6, line 15 * * page 6, line 55 - page 7, line 27 * * page 7, line 50 - page 8, line 32; examples 1,3 *;
 [Y]GB2251447  (EXXON PRODUCTION RESEARCH CO [US]) [Y] 1,7-14,18-22 * page 3, line 11 - line 22 * * page 4, line 18 - line 24 * * page 8, line 4 - page 9, line 6 *
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.