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Extract from the Register of European Patents

EP About this file: EP0228646

EP0228646 - A signal processing apparatus for disc memory devices [Right-click to bookmark this link]
StatusThe application has been refused
Status updated on  16.03.1989
Database last updated on 15.07.2024
Most recent event   Tooltip15.08.2008Change - representativepublished on 17.09.2008  [2008/38]
Applicant(s)For all designated states
Hitachi, Ltd.
6, Kanda Surugadai 4-chome
Chiyoda-ku
Tokyo 101 / JP
[N/P]
Former [1987/29]For all designated states
HITACHI, LTD.
6, Kanda Surugadai 4-chome
Chiyoda-ku, Tokyo 101 / JP
Inventor(s)01 / Sasaki, Hiroshi
23-2, Higashi Oonuma-cho 2-chome
Hitachi-shi Ibaraki 316 / JP
02 / Chiba, Tomio
2525-303, Mawatari
Katsuta-shi Ibaraki 312 / JP
03 / Kido, Mitsuyasu
10-12, Suehiro-cho 3-chome
Hitachi-shi Ibaraki 316 / JP
04 / Sato, Yoshio
3-15, Hanayama-cho 1-chome
Hitachi-shi Ibaraki 316 / JP
05 / Watanabe, Atsumi
14-4, Kuji-cho 7-chome
Hitachi-shi Ibaraki 319-12 / JP
[1987/29]
Representative(s)Beetz & Partner mbB
Patentanwälte
Prinzregentenstraße 54
80538 München / DE
[N/P]
Former [2008/38]Beetz & Partner
Patentanwälte Steinsdorfstrasse 10
80538 München / DE
Former [1987/29]Patentanwälte Beetz - Timpe - Siegfried Schmitt-Fumian - Mayr
Steinsdorfstrasse 10
D-80538 München / DE
Application number, filing date86117490.216.12.1986
[1987/29]
Priority number, dateJP1985028726920.12.1985         Original published format: JP 28726985
JP1986001191524.01.1986         Original published format: JP 1191586
[1987/29]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0228646
Date:15.07.1987
Language:EN
[1987/29]
Type: A3 Search report 
No.:EP0228646
Date:14.10.1987
Language:EN
[1987/42]
Search report(s)(Supplementary) European search report - dispatched on:EP25.08.1987
ClassificationIPC:G11B20/10, G11B5/012, G11B7/013, // G11B19/28
[1987/29]
CPC:
G11B7/24085 (EP,US); G11B20/10 (EP,US); G11B5/012 (EP,US)
Designated contracting statesDE,   GB,   NL [1987/29]
TitleGerman:Signal-Verarbeitungsanordnung für Platten-Speichergeräte[1987/29]
English:A signal processing apparatus for disc memory devices[1987/29]
French:Appareil de traitement de signaux pour des appareils de mémoire à disques[1987/29]
File destroyed:24.07.1995
Examination procedure19.10.1987Examination requested  [1987/52]
29.01.1988Despatch of a communication from the examining division (Time limit: M06)
22.07.1988Reply to a communication from the examining division
02.12.1988Despatch of communication that the application is refused, reason: substantive examination [1989/18]
12.02.1989Application refused, date of legal effect [1989/18]
Fees paidPenalty fee
Additional fee for renewal fee
02.01.198903   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[Y]JP57006415  ;
 [A]JP58161117  ;
 [A]JP60089861  ;
 [A]JP57210741  ;
 [A]JP60040570  ;
 [A]JP58175142  ;
 [Y]US2901737  (STOVALL JR JOHN REED);
 [A]US3908115  (WAGGENER WILLIAM N);
 [A]EP0018157  (BURROUGHS CORP [US]);
 [A]US4357635  (HASEGAWA TAKASHI);
 [Y]EP0075948  (HITACHI LTD [JP]);
 [A]EP0158067  (TOSHIBA KK [JP])
 [Y]  - PATENT ABSTRACTS OF JAPAN, vol. 6, no. 66 (P-112)[944], 27th April 1982; & JP-A-57 006 415 (MATSUSHITA DENKI SANGYO K.K.) 13-01-1982, & JP57006415 A 00000000
 [Y]  - AFIPS CONFERENCE PROCEEDINGS OF THE 1982 NATIONAL COMPUTER CONFERENCE, Houston, Texas, 7th - 10th June 1982, pages 13-17, Arlington, US; The 5.25-inch fixed/removable disk drive
 [Y]  - IEEE TRANSACTIONS ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, vol. ASSP-29, no. 3, part III, June 1981, pages 736-744, IEEE, New York, US; K. MARTIN et al.: "Switched-capacitor building blocks for adaptive systems"
 [A]  - PATENT ABSTRACTS OF JAPAN, vol. 7, no. 286 (P-244)[1431], 21st December 1983; & JP-A-58 161 117 (MATSUSHITA DENKI SANGYO K.K.) 24-09-1983, & JP58161117 A 00000000
 [A]  - PATENT ABSTRACTS OF JAPAN, vol. 9, no. 236 (P-390)[1959], 21st September 1985; & JP-A-60 089 861 (MITSUBISHI DENKI K.K.) 20-05-1985, & JP60089861 A 00000000
 [A]  - PATENT ABSTRACTS OF JAPAN, vol. 7, no. 65 (E-165)[1210], 18th March 1983; & JP-A-57 210 741 (TOKYO SHIBAURA DENKI K.K.) 24-12-1982, & JP57210741 A 00000000
 [A]  - PATENT ABSTRACTS OF JAPAN, vol. 9, no. 163 (P-371)[1886], 9th July 1985; & JP-A-60 040 570 (HITACHI SEISAKUSHO K.K.) 02-03-1985, & JP60040570 A 00000000
 [A]  - PATENT ABSTRACTS OF JAPAN, vol. 8, no. 18 (P-250)[1455], 26th January 1984; & JP-A-58 175 142 (HITACHI SEISAKUSHO K.K.) 14-10-1983, & JP58175142 A 00000000
 [A]  - 76th CONVENTION OF AUDIO ENGINEERING SOCIETY PREPRINT, New York, 8th-11th October 1984, pages 1-9, AES, New York, US; G.W. McNALLY: "Variable speed replay of digital audio with constant output sampling rate",
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.