Deutsch English Français

Contact

EP0307455

European procedure

Quick help

Maintenance news

Scheduled maintenance

Regular maintenance outages:
between 05.00 and 05.15 hrs CET (Monday to Sunday).

Other outages
Availability
Register Forum

2022.02.11

More...

News flashes

News flashes

New version of the European Patent Register - SPC information for Unitary Patents.

2024-03-06

More...

Extract from the Register of European Patents

EP About this file: EP0307455

EP0307455 - ANALOG/DIGITAL ADAPTIVE LINE ENHANCER [Right-click to bookmark this link]
Status	No opposition filed within time limit Status updated on 22.10.1992 Database last updated on 12.07.2024
Most recent event Tooltip	18.07.2008	Change - representative	published on 20.08.2008 [2008/34]
Applicant(s)	For all designated states UNISYS CORPORATION P.O. Box 500 Blue Bell Pennsylvania 19424 / US
	[N/P]
Former [1989/12]	For all designated states Unisys Corporation P.O. Box 500 Blue Bell Pennsylvania 19424 / US
Inventor(s)	01 / BULLOCK, Scott, R. 6278 Hastings Circle West Jorgan, UT 84084 / US
	02 / SMITH, Patrick, J. 780 E. 5th Avenue, 4 Salt Lake City, UT 84103 / US
	[1989/12]
Representative(s)	Bridge-Butler, Alan James, et al Baron Warren Redfern 19 South End Kensington London W8 5BU / GB
	[2008/34]
Former [1992/22]	Bridge-Butler, Alan James, et al G.F. Redfern & Co. Redfern House 149/151 Tarring Road Worthing West Sussex BN11 4HE / GB
Former [1989/12]	Kirby, Harold Douglas Benson G.F. Redfern & Company Marlborough Lodge 14 Farncombe Road Worthing West Sussex BN11 2BT / GB
Application number, filing date	88903539.0	14.03.1988
	[1989/12]
	WO1988US00784
Priority number, date	US19870030301	26.03.1987 Original published format: US 30301
	[1989/12]
Filing language	EN
Procedural language	EN
Publication	Type:	A1 Application with search report
	No.:	WO8807789
	Date:	06.10.1988
	Language:	EN
	[1988/22]
	Type:	A1 Application with search report
	No.:	EP0307455
	Date:	22.03.1989
	Language:	EN
	The application published by WIPO in one of the EPO official languages on 06.10.1988 takes the place of the publication of the European patent application.
	[1989/12]
	Type:	B1 Patent specification
	No.:	EP0307455
	Date:	18.12.1991
	Language:	EN
	[1991/51]
Search report(s)	International search report - published on:	EP	06.10.1988
Classification	IPC:	H03H21/00, H04B3/06	[1989/12]
	CPC:	H03H21/0001 (EP,US)
Designated contracting states	BE, CH, DE, FR, GB, IT, LI, LU, NL, SE [1989/12]
Title	German:	ANALOGER/DIGITALER ADAPTIVER LEITUNGSENTZERRER	[1989/12]
	English:	ANALOG/DIGITAL ADAPTIVE LINE ENHANCER	[1989/12]
	French:	ENRICHISSEUR DE LIGNE ADAPTATIF ANALOGIQUE/NUMERIQUE	[1989/12]
Entry into regional phase	14.10.1988	National basic fee paid
	14.10.1988	Designation fee(s) paid
	14.10.1988	Examination fee paid
Examination procedure	14.10.1988	Examination requested [1989/12]
	13.03.1991	Despatch of communication of intention to grant (Approval: Yes)
	17.06.1991	Communication of intention to grant the patent
	25.07.1991	Fee for grant paid
	25.07.1991	Fee for publishing/printing paid
Opposition(s)	19.09.1992	No opposition filed within time limit [1992/50]
Fees paid	Renewal fee
	19.02.1990	Renewal fee patent year 03
	25.02.1991	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.
Lapses during opposition Tooltip	BE	18.12.1991
	CH	18.12.1991
	IT	18.12.1991
	LI	18.12.1991
	NL	18.12.1991
	SE	18.12.1991
	LU	31.03.1992
	[2008/01]
Former [1999/52]	BE	18.12.1991
	CH	18.12.1991
	IT	18.12.1991
	LI	18.12.1991
	NL	18.12.1991
	SE	18.12.1991
	LU	31.03.1992
Former [1999/42]	BE	18.12.1991
	CH	18.12.1991
	IT	18.12.1991
	LI	18.12.1991
	NL	18.12.1991
	SE	18.12.1991
Former [1992/37]	BE	18.12.1991
	CH	18.12.1991
	LI	18.12.1991
	NL	18.12.1991
	SE	18.12.1991
Former [1992/33]	CH	18.12.1991
	LI	18.12.1991
	NL	18.12.1991
	SE	18.12.1991
Former [1992/28]	CH	18.12.1991
	LI	18.12.1991
	SE	18.12.1991
Former [1992/27]	CH	18.12.1991
	LI	18.12.1991
Cited in	International search	[A]JP60227525 ;
		EP0131725 [ ] (HORN MANFRED);
		EP0233713 [ ] (STC PLC [GB])
		[A] - Patent Abstracts of Japan, vol. 10, no. 82 (E-392)(2139), 2 April 1986; & JP-A-60227525 (MITSUBISHI DENKI K.K.) 12 November 1975, & JP60227525 A 19751112
		[A] - IEE Proceedings section A - I, vol. 133, no. 1, part G, February 1986 (Stevenage, Herts, GB), C.-H. Wei et al.: "Multimemory block structure for implementing a digital adaptive filter using distributed arithmetic", pages 19-26

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.

Legal notice
Terms of use
24.1.24; 35p