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Extract from the Register of European Patents

EP About this file: EP0571831

EP0571831 - Multi-stage process for the preparation of thermoplastically processable polyurethane elastomers [Right-click to bookmark this link]
Status	Opposition rejected Status updated on 30.07.1999 Database last updated on 19.07.2024
Most recent event Tooltip	30.07.1999	Opposition rejected	published on 15.09.1999 [1999/37]
Applicant(s)	For all designated states BAYER AG 51368 Leverkusen / DE
	[N/P]
Former [1993/48]	For all designated states BAYER AG D-51368 Leverkusen / DE
Inventor(s)	01 / Heidingsfeld, Herbert, Dipl.-Ing. Von-Hasewinkel-Weg 6 W-5020 Frechen 4 / DE
	02 / Bräuer, Wolfgang, Dr. Am Eselsdamm 1 W-5090 Leverkusen 1 / DE
	03 / Müller, Friedemann, Dr. Am Steinacker 5 W-4040 Neuss / DE
	04 / Meister, Willi, Dr. Bahnhofstrasse 76 W-4047 Dormagen / DE
	[1993/48]
Application number, filing date	93107823.2	13.05.1993
	[1993/48]
Priority number, date	DE19924217365	26.05.1992 Original published format: DE 4217365
	[1993/48]
Filing language	DE
Procedural language	DE
Publication	Type:	A2 Application without search report
	No.:	EP0571831
	Date:	01.12.1993
	Language:	DE
	[1993/48]
	Type:	A3 Search report
	No.:	EP0571831
	Date:	20.04.1994
	Language:	DE
	[1994/16]
	Type:	B1 Patent specification
	No.:	EP0571831
	Date:	23.10.1996
	Language:	DE
	[1996/43]
Search report(s)	(Supplementary) European search report - dispatched on:	EP	28.02.1994
Classification	IPC:	C08G18/10, C08G18/12, C08G18/42, C08G18/48, C08G18/74, C08L75/04, C08K7/04	[1993/48]
	CPC:	C08G18/0895 (EP,US); C08G18/10 (EP,US)
	C-Set:	C08G18/10, C08G18/2825 (US,EP); C08G18/10, C08G18/3203 (EP,US)
Designated contracting states	BE, DE, FR, GB, IT, NL [1993/48]
Title	German:	Mehrstufenprozess zur Herstellung von thermoplastisch verarbeitbaren Polyurethan-Elastomeren	[1993/48]
	English:	Multi-stage process for the preparation of thermoplastically processable polyurethane elastomers	[1993/48]
	French:	Procédé en plusieurs étapes de préparation d'élastomères de polyuréthane thermoplastiquement façonnables	[1993/48]
Examination procedure	15.09.1994	Examination requested [1994/45]
	15.01.1996	Despatch of a communication from the examining division (Time limit: M04)
	23.01.1996	Reply to a communication from the examining division
	04.04.1996	Despatch of communication of intention to grant (Approval: Yes)
	22.04.1996	Communication of intention to grant the patent
	20.06.1996	Fee for grant paid
	20.06.1996	Fee for publishing/printing paid
Opposition(s)	Opponent(s)	01 09.07.1997 ADMISSIBLE BASF Aktiengesellschaft -Patentabteilung - C6- Carl-Bosch-Strasse 38 D-67056 Ludwigshafen / DE
		[N/P]
	Former [1997/36]
	Opponent(s)	01 09.07.1997 ADMISSIBLE BASF Aktiengesellschaft, Ludwigshafen -Patentabteilung - C6- Carl-Bosch-Strasse 38 D-67056 Ludwigshafen / DE
	29.08.1997	Invitation to proprietor to file observations on the notice of opposition
	02.01.1998	Reply of patent proprietor to notice(s) of opposition
	02.03.1999	Date of oral proceedings
	22.04.1999	Despatch of minutes of oral proceedings
	22.04.1999	Date of despatch of rejection of opposition
	02.05.1999	Legal effect of rejection of opposition [1999/37]
Fees paid	Renewal fee
	13.04.1995	Renewal fee patent year 03
	12.04.1996	Renewal fee patent year 04
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	[A]EP0135111 (BAYER AG [DE]) [A] 1,2,4,5 * Seite 12, Zeile 9 - Seite 13, Zeile 7; * * Beispiel II; Ansprüche 1, 4-6 *;
		[DA]GB1057018 (ICI LTD) [DA] 1,2,5 * Beispiel 1, Ansprüche *;
		[A]EP0004939 (BAYER AG [DE]) [A] 1,2,4,5 * Seite 7, Zeile 26 - Seite 8, Zeile 3; * * Beispiel 2 *;
		[A]DE2610980 (BASF AG) [A] 1,2,5 * Seite 6, letzter Absatz; * * Beispiele 1a, 2a *;
		[A]EP0010601 (BAYER AG [DE]) [A] 1,2,5 * Seite 10, Zeile 26 - Seite 11, Zeile 2; * * Beispiel 1 *
		[A] - O. N. SARAKUZ ET AL., "Developmnt of a continuous process for the production of thermoplastic elastomers based on carbon-chain oligomer diols", CHEMICAL ABSTRACTS, (19790122), vol. 90, no. 4, Database accession no. 24468t [A] 1,2,5 * abstract *
		[ ] - PROMYSHLENNOST SINTETICHESKOGO KAUCHUKA, MOSKAU,SU, (1978), no. 8, pages 15 - 19

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