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EP0546406

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Extract from the Register of European Patents

EP About this file: EP0546406

EP0546406 - Use of organo-functional polysiloxanes for modifying the surfaces of fine particles [Right-click to bookmark this link]
Status	No opposition filed within time limit Status updated on 07.06.1996 Database last updated on 11.04.2026
Most recent event Tooltip	07.06.1996	No opposition filed within time limit	published on 24.07.1996 [1996/30]
Applicant(s)	For all designated states Th. Goldschmidt AG Goldschmidtstrasse 100 45127 Essen / DE
	[N/P]
Former [1993/24]	For all designated states Th. Goldschmidt AG Goldschmidtstrasse 100 D-45127 Essen / DE
Inventor(s)	01 / Höhner, Werner Finkenstrasse 34 W-5620 Velbert 11 / DE
	02 / Schaefer, Dietmar, Dr. Im Poth 12 W-4320 Hattingen 16 / DE
	[1995/31]
Former [1993/41]	01 / Höhner, Werner Finkenstrasse 34 W-5620 Velbert 11 / DE
	02 / Schaefer, Dietman, Dr. Im Poth 12 W-4320 Hattingen 16 / DE
Former [1993/24]	01 / * * *
	02 / * * *
Application number, filing date	92120379.0	28.11.1992
	[1993/24]
Priority number, date	DE19914140793	11.12.1991 Original published format: DE 4140793
	[1993/24]
Filing language	DE
Procedural language	DE
Publication	Type:	A2 Application without search report
	No.:	EP0546406
	Date:	16.06.1993
	Language:	DE
	[1993/24]
	Type:	A1 / A2 RE Reissue of A-publication
	No.:	EP0546406
	Date:	20.09.1993
	[1993/45]
	Type:	A3 Search report
	No.:	EP0546406
	Date:	22.06.1994
	Language:	DE
	[1994/25]
	Type:	B1 Patent specification
	No.:	EP0546406
	Date:	02.08.1995
	Language:	DE
	[1995/31]
Search report(s)	(Supplementary) European search report - dispatched on:	EP	02.05.1994
Classification	IPC:	C09C3/12, C03C25/02	[1994/20]
	CPC:	C09C3/12 (EP,US); C03C25/40 (EP,US); C01P2002/02 (US); C01P2006/22 (US); Y10T428/2993 (EP,US); Y10T428/2995 (EP,US); (+) Y10T428/2998 (EP,US) (-)
	Former IPC [1993/24]	C09C3/12
Designated contracting states	BE, DE, ES, FR, GB, IT, NL [1993/24]
Title	German:	Verwendung von organofunktionellen Polysiloxanen zum Modifizieren der Oberfläche feinteiliger Partikel	[1993/24]
	English:	Use of organo-functional polysiloxanes for modifying the surfaces of fine particles	[1993/24]
	French:	Utilisation de polysiloxanes organofonctionnels pour modifier les surfaces de fines particules	[1993/24]
Examination procedure	05.12.1992	Examination requested [1993/24]
	10.01.1995	Despatch of communication of intention to grant (Approval: Yes)
	19.01.1995	Communication of intention to grant the patent
	21.03.1995	Fee for grant paid
	21.03.1995	Fee for publishing/printing paid
Opposition(s)	03.05.1996	No opposition filed within time limit [1996/30]
Fees paid	Renewal fee
	15.11.1994	Renewal fee patent year 03
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	[PA] EP0468305 (GOLDSCHMIDT AG TH et al.) [PA] 1 * claims 1,8 *
		[A] DE3820294 (TH. GOLDSCHMIDT AG, 4300 ESSEN, DE) [A] 1 * claims 1-8 *
		[A] US2891923 (PHREANER ELLIS H et al.) [A] 1 * column 2, line 5 - line 17 *
		[A] EP0257423 (BAYER AG et al.) [A]

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