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EP0721597

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Extract from the Register of European Patents

EP About this file: EP0721597

EP0721597 - ACOUSTO-OPTIC FILTER WITH NEAR-IDEAL BANDPASS CHARACTERISTICS [Right-click to bookmark this link]
Status	The application is deemed to be withdrawn Status updated on 28.06.2002 Database last updated on 20.09.2024
Most recent event Tooltip	28.06.2002	Application deemed to be withdrawn	published on 14.08.2002 [2002/33]
Applicant(s)	For all designated states Telcordia Technologies, Inc. 445 South Street Morristown, NJ 07960 / US
	[1999/51]
Former [1996/29]	For all designated states BELL COMMUNICATIONS RESEARCH, INC. 290 West Mt. Pleasant Avenue Livingston, New Jersey 07039-2729 / US
Inventor(s)	01 / SONG, Ghie, Hugh Dept. Inf.&Comm. Kwangju Inst.of Sci.&techn. KJIST 572 SangAmDong KwangsanGuKwangju 506-303 / US
	[1996/31]
Former [1996/29]	01 / SONG, Ghie, Hugh 33 Beaumont Court Tinton Falls, NJ 07724 / US
Representative(s)	Dubois-Chabert, Guy, et al BREVALEX 3, rue du Docteur Lanceraux 75008 Paris / FR
	[N/P]
Former [1996/29]	Dubois-Chabert, Guy, et al Société de Protection des Inventions 25, rue de Ponthieu 75008 Paris / FR
Application number, filing date	94929811.1	15.09.1994
	[1996/29]
	WO1994US10440
Priority number, date	US19930131522	01.10.1993 Original published format: US 131522
	[1996/29]
Filing language	EN
Procedural language	EN
Publication	Type:	A1 Application with search report
	No.:	WO9510791
	Date:	20.04.1995
	Language:	EN
	[1995/17]
	Type:	A1 Application with search report
	No.:	EP0721597
	Date:	17.07.1996
	Language:	EN
	The application published by WIPO in one of the EPO official languages on 20.04.1995 takes the place of the publication of the European patent application.
	[1996/29]
Search report(s)	International search report - published on:	US	20.04.1995
	(Supplementary) European search report - dispatched on:	EP	16.07.1996
Classification	IPC:	G02B6/26, G02F1/11, G02F1/125	[1996/35]
	CPC:	G02F1/125 (EP,US); G02F1/0142 (EP,US); G02F2203/055 (EP,US)
	Former IPC [1996/29]	G02B6/26, G02F1/11
Designated contracting states	DE, FR, GB [1996/29]
Title	German:	AKUSTOOPTISCHES FILTER MIT NAHEZU IDEALER BANDPASSCHARAKTERISTIK	[1996/29]
	English:	ACOUSTO-OPTIC FILTER WITH NEAR-IDEAL BANDPASS CHARACTERISTICS	[1996/29]
	French:	FILTRE ACOUSTO-OPTIQUE A CARACTERISTIQUES PASSE-BANDE QUASI IDEALES	[1996/29]
Entry into regional phase	18.03.1996	National basic fee paid
	18.03.1996	Search fee paid
	18.03.1996	Designation fee(s) paid
	18.03.1996	Examination fee paid
Examination procedure	17.04.1995	Request for preliminary examination filed International Preliminary Examining Authority: US
	18.03.1996	Examination requested [1996/29]
	22.09.2000	Despatch of a communication from the examining division (Time limit: M04)
	23.11.2000	Reply to a communication from the examining division
	20.07.2001	Despatch of communication of intention to grant (Approval: Yes)
	25.10.2001	Communication of intention to grant the patent
	05.02.2002	Application deemed to be withdrawn, date of legal effect [2002/33]
	12.03.2002	Despatch of communication that the application is deemed to be withdrawn, reason: fee for grant / fee for printing not paid in time [2002/33]
Fees paid	Renewal fee
	18.03.1996	Renewal fee patent year 03
	22.08.1997	Renewal fee patent year 04
	26.08.1998	Renewal fee patent year 05
	23.08.1999	Renewal fee patent year 06
	28.08.2000	Renewal fee patent year 07
	24.09.2001	Renewal fee patent year 08
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] - SMITH D A ET AL, "Sidelobe suppression in an acousto-optic filter with a raised-cosine interaction strength", APPLIED PHYSICS LETTERS, 31 AUG. 1992, USA, ISSN 0003-6951, vol. 61, no. 9, pages 1025 - 1027, XP002007478 [A] 1-4,7-11,13,15,18,19 * the whole document * DOI: http://dx.doi.org/10.1063/1.107704�
		[PX] - SONG G H, "Proposal for acousto-optic tunable filters with near-ideal bandpass characteristics", APPLIED OPTICS, 1 NOV. 1994, USA, ISSN 0003-6935, vol. 33, no. 31, pages 7458 - 7460, XP000477979 [PX] 1-22 * the whole document * DOI: http://dx.doi.org/10.1364/AO.33.007458
	International search	[A]US4273411 (ALFERNESS RODNEY C);
		[A]US4390236 (ALFERNESS RODNEY C);
		[A]US4781425 (RISK WILLIAM P [US], et al);
		[A]US5002349 (CHEUNG KWOK-WAI [US], et al);
		[Y]US5218653 (JOHNSON JOHN J [US], 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.

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