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Extract from the Register of European Patents

EP About this file: EP0182872

EP0182872 - A PROCESS FOR THE PREPARATION OF CYCLOBUTENE-SUBSTITUTED AROMATIC HYDROCARBONS [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  30.08.1990
Database last updated on 02.11.2024
Most recent event   Tooltip07.03.1997Lapse of the patent in a contracting statepublished on 23.04.1997 [1997/17]
Applicant(s)For all designated states
The Dow Chemical Company
2020 Dow Center
Midland, Michigan 48674 / US
[N/P]
Former [1986/23]For all designated states
THE DOW CHEMICAL COMPANY
2030 Dow Center Abbott Road P.O. Box 1967
Midland Michigan 48640-1967 / US
Inventor(s)01 / SO, Ying-Hung
1524 Dilloway Drive
Midland, MI 48640 / US
[1986/23]
Representative(s)Sternagel, Hans-Günther, et al
Patentanwälte Sternagel & Fleischer Braunsberger Feld 29
51429 Bergisch Gladbach / DE
[N/P]
Former [1986/23]Sternagel, Hans-Günther, Dr., et al
Patentanwälte Dr. Michael Hann Dr. H.-G. Sternagel Sander Aue 30
D-51465 Bergisch Gladbach / DE
Application number, filing date85902848.220.05.1985
[1986/23]
WO1985US00939
Priority number, dateUS1984061216421.05.1984         Original published format: US 612164
[1986/23]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO8505355
Date:05.12.1985
Language:EN
[1985/26]
Type: A1 Application with search report 
No.:EP0182872
Date:04.06.1986
Language:EN
The application published by WIPO in one of the EPO official languages on 05.12.1985 takes the place of the publication of the European patent application.
[1986/23]
Type: B1 Patent specification 
No.:EP0182872
Date:08.11.1989
Language:EN
[1989/45]
Search report(s)International search report - published on:US05.12.1985
(Supplementary) European search report - dispatched on:EP21.08.1986
ClassificationIPC:C07C39/17, C07C51/09
[1986/23]
CPC:
C07C69/76 (EP,US)
Designated contracting statesBE,   CH,   DE,   FR,   GB,   IT,   LI,   NL [1986/23]
TitleGerman:VERFAHREN ZUR HERSTELLUNG ZYKLOBUTENSUBSTITUIERTER AROMATISCHER KOHLENWASSERSTOFFE[1986/23]
English:A PROCESS FOR THE PREPARATION OF CYCLOBUTENE-SUBSTITUTED AROMATIC HYDROCARBONS[1986/23]
French:PROCEDE DE PREPARATION D'HYDROCARBURES AROMATIQUES A SUBSTITUTION DE CYCLOBUTENE[1986/23]
Entry into regional phase16.01.1986National basic fee paid 
16.01.1986Search fee paid 
16.01.1986Designation fee(s) paid 
16.01.1986Examination fee paid 
Examination procedure16.01.1986Examination requested  [1986/23]
06.11.1987Despatch of a communication from the examining division (Time limit: M04)
09.03.1988Reply to a communication from the examining division
19.05.1988Despatch of a communication from the examining division (Time limit: M02)
19.07.1988Reply to a communication from the examining division
08.08.1988Despatch of communication of intention to grant (Approval: Yes)
07.12.1988Communication of intention to grant the patent
23.02.1989Fee for grant paid
23.02.1989Fee for publishing/printing paid
Opposition(s)09.08.1990No opposition filed within time limit [1990/42]
Fees paidRenewal fee
23.03.1987Renewal fee patent year 03
01.03.1988Renewal fee patent year 04
16.03.1989Renewal fee patent year 05
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Cited inInternational search[Y]  - Journal of the American Chemical Society, Vol. 91 No. 27 December 1969 A.G. LOUDEN et al. "Gas-Phase Eliminations. XI. The Pyrolysis of -Chloro-o-Xylene"
 [Y]  - Tetrahedron Letters, No. 46 1978 PETER SCHIESS et al "Preparation of Benzocyclobutenes by Flash Vacuum Pyrolysis"
 [Y]  - Tetrahedron Letters, No. 44 1978 V. BOEKELHEIDE et al, "The Use of Benzocyclobutenes as Intermediates in Syntheiss of Multibridged Cyclophanes".
 [Y]  - Pyrolytic Medhods in Organic Chemistry, BROWN, Academic Press, New York, (1980) pages 105-6
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.