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Extract from the Register of European Patents

EP About this file: EP0693213

EP0693213 - SPECTRAL SMOOTHING FILTER [Right-click to bookmark this link]
StatusThe application is deemed to be withdrawn
Status updated on  13.03.1998
Database last updated on 13.11.2024
Most recent event   Tooltip13.03.1998Application deemed to be withdrawnpublished on 29.04.1998 [1998/18]
Applicant(s)For all designated states
CIRRUS LOGIC, INC.
3100 West Warren Avenue Fremont
California 94538 / US
[N/P]
Former [1996/04]For all designated states
CIRRUS LOGIC, INC.
3100 West Warren Avenue
Fremont, California 94538 / US
Inventor(s)01 / BEHRENS, Richard, T.
659 West Owl Drive
Louisville, CO 80027 / US
02 / GLOVER, Neal
17 Amesbury
Broomfield, CO 80020 / US
03 / DUDLEY, Trent, O.
5348 S. Fox Street, 101
Littleton, CO 80120 / US
04 / ARMSTRONG, Alan, J.
125 Peregrine Circle
Broomfield, CO 80020 / US
05 / ZOOK, Christopher, P.
8901 Sage Valley Road
Longmont, CO 80503 / US
06 / BLISS, William, G.
13385 Milwaukee Court
Thornton, CO 80241 / US
[1996/04]
Representative(s)Dubois-Chabert, Guy, et al
BREVALEX 3, rue du Docteur Lanceraux
75008 Paris / FR
[N/P]
Former [1996/04]Dubois-Chabert, Guy, et al
Société de Protection des Inventions 25, rue de Ponthieu
F-75008 Paris / FR
Application number, filing date94914019.804.04.1994
[1996/04]
WO1994US03657
Priority number, dateUS1993004366206.04.1993         Original published format: US 43662
[1996/04]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9423427
Date:13.10.1994
[1994/23]
Type: A1 Application with search report 
No.:EP0693213
Date:24.01.1996
[1996/04]
Search report(s)International search report - published on:US13.10.1994
(Supplementary) European search report - dispatched on:EP04.01.1996
ClassificationIPC:G11B5/09, G11B5/035, H03D1/06, H04B1/10
[1996/04]
CPC:
H03H17/06 (EP,US); G11B20/10009 (EP,US); G11B5/09 (EP,US);
H03H17/02 (EP,US)
Designated contracting statesDE,   FR,   GB [1996/04]
TitleGerman:SPEKTRALES GLÄTTUNGSFILTER[1996/04]
English:SPECTRAL SMOOTHING FILTER[1996/04]
French:FILTRE DE LISSAGE SPECTRAL[1996/04]
Entry into regional phase14.09.1995National basic fee paid 
14.09.1995Search fee paid 
14.09.1995Designation fee(s) paid 
14.09.1995Examination fee paid 
Examination procedure04.11.1994Request for preliminary examination filed
International Preliminary Examining Authority: US
14.09.1995Examination requested  [1996/04]
01.11.1997Application deemed to be withdrawn, date of legal effect  [1998/18]
28.11.1997Despatch of communication that the application is deemed to be withdrawn, reason: renewal fee not paid in time  [1998/18]
Fees paidRenewal fee
02.10.1996Renewal fee patent year 03
Penalty fee
Additional fee for renewal fee
30.04.199603   M06   Fee paid on   02.10.1996
30.04.199704   M06   Not yet paid
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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[X]JPS5885911  ;
 [A]JPH0528410  ;
 [A]JPS6159664  ;
 [A]US4012628  (GERSHO ALLEN) [A] 19,22,23,36 * abstract * * column 1, line 28 - column 2, line 5 * * column 3, line 45 - column 4, line 68 *;
 [XA]DE3447514  (HITACHI LTD [JP]) [X] 1,3-18 * claims 1-5 * * page 7, line 13 - line 32 * * page 9, line 20 - page 10, line 5 * * page 11, line 3 - line 30 * * figures 5,6,9,10 * [A] 2,19-36;
 [A]US4757395  (NISHIKAWA KEIICHI [JP], et al) [A] 1,2 * column 2, line 30 - column 3, line 64 * * column 4, line 24 - column 5, line 58 * * figures 1,2 *;
 [A]US4907100  (NISHIYAMA NOBUMASA [JP], et al) [A] 1,3,4,6-11,14-18 * column 2, line 10 - line 24 * * column 2, line 34 - line 56 * * column 5, line 3 - line 42 * * column 16, line 15 - column 17, line 13 * * figures 26-28 *;
 [XP]EP0575624  (FUJITSU LTD [JP]) [XP] 1-5,18 * abstract * * column 2, line 43 - column 3, line 57 * * column 5, line 1 - column 6, line 26 ** figures 5,6 *;
 US5307213  [ ] (NISHIYAMA NOBUMASA [JP]) [ ] * column 1, line 8 - column 3, line 11 * * column 5, line 50 - column 7, line 15 * * column 7, line 56 - column 8, line 16 * * column 10, line 23 - line 42 * * figures 1,2,5 *
 [X]  - PATENT ABSTRACTS OF JAPAN, (19830813), vol. 007, no. 184, Database accession no. (P - 216), & JP58085911 A 19830523 (MATSUSHITA DENKI SANGYO KK) [X] 1,2,18 * abstract *
 [A]  - PATENT ABSTRACTS OF JAPAN, (19930614), vol. 017, no. 311, Database accession no. (P - 1556), & JP05028410 A 19930205 (HITACHI LTD) [A] 1,2,4-10,18 * abstract *
 [A]  - ANONYMOUS, "Optimal Time Domain Filters for Recording Channels. June 1965.", IBM TECHNICAL DISCLOSURE BULLETIN, NEW YORK, US, vol. 8, no. 1, pages 49 - 51 [A] 19,36 * the whole document *
 [A]  - PATENT ABSTRACTS OF JAPAN, (19860806), vol. 010, no. 225, Database accession no. (P - 484), & JP61059664 A 19860327 (FUJITSU LTD)
 [A]  - CHI C S, "Spectral contours for optimum signal detection (Invited)", INTERMAG '87: INTERNATIONAL MAGNETICS CONFERENCE, TOKYO, JAPAN, 14-17 APRIL 1987, ISSN 0018-9464, IEEE TRANSACTIONS ON MAGNETICS, SEPT. 1987, USA, vol. MAG-23, no. 5, pt.2, pages 3660 - 3665
International search[A]US4644424  (NISHIYAMA NOBUMASA [JP], et al);
 [A]US4727424  (CHAO TZY-HONG [US]);
 [A]US4755890  (HUBER DON [US]);
 [A]US4875112  (DOST MARTIN H [US], et al);
 [X]US5150379  (BAUGH RICHARD A [US], et al)
 [A]  - IEEE 1989, WILLIAM L. ABBOTT et al., "Channel Equalization Methods for Magnetic Storage", pages 1618-1622.
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.