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Extract from the Register of European Patents

EP About this file: EP0446900

EP0446900 - Mixed-flow compressor [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  01.11.1995
Database last updated on 03.10.2024
Most recent event   Tooltip01.11.1995No opposition filed within time limitpublished on 20.12.1995 [1995/51]
Applicant(s)For all designated states
Hitachi, Ltd.
6, Kanda Surugadai 4-chome
Chiyoda-ku
Tokyo 101 / JP
[N/P]
Former [1991/38]For all designated states
HITACHI, LTD.
6, Kanda Surugadai 4-chome
Chiyoda-ku, Tokyo 101 / JP
Inventor(s)01 / Nishida, Hideo
1977-13, Shimoinayoshi, Chiyodamura
Niihari-gun, Ibaraki-ken / JP
02 / Kobayashi, Hiromi
3186-21, Shimoinayoshi, Chiyodamura
Niihari-gun, Ibaraki-ken / JP
03 / Miura, Haruo
1771-2, Niihari, Chiyodamura
Niihari-gun, Ibaraki-ken / JP
04 / Takagi, Takeo
85-23, Shoei
Tsukuba-shi / JP
[1991/38]
Representative(s)Finck, Dieter, et al
V. Füner Ebbinghaus Finck Hano
Patentanwälte
Mariahilfplatz 2-3
81541 München / DE
[N/P]
Former [1991/38]Finck, Dieter, Dr.Ing., et al
Patentanwälte v. Füner, Ebbinghaus, Finck Mariahilfplatz 2 - 3
D-81541 München / DE
Application number, filing date91103850.313.03.1991
[1991/38]
Priority number, dateJP1990006097314.03.1990         Original published format: JP 6097390
[1991/38]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP0446900
Date:18.09.1991
Language:EN
[1991/38]
Type: B1 Patent specification 
No.:EP0446900
Date:28.12.1994
Language:EN
[1994/52]
Search report(s)(Supplementary) European search report - dispatched on:EP17.06.1991
ClassificationIPC:F04D29/44, F04D17/06, F04D29/62
[1991/38]
CPC:
F04D17/06 (EP); F04D29/444 (EP); F04D29/624 (EP);
F05D2250/52 (EP)
Designated contracting statesCH,   DE,   FR,   IT,   LI [1991/38]
TitleGerman:Diagonal-Verdichter[1991/38]
English:Mixed-flow compressor[1991/38]
French:Compresseur à écoulement mixte[1991/38]
Examination procedure13.03.1991Examination requested  [1991/38]
05.05.1993Despatch of a communication from the examining division (Time limit: M06)
10.11.1993Reply to a communication from the examining division
28.03.1994Despatch of communication of intention to grant (Approval: Yes)
01.07.1994Communication of intention to grant the patent
01.09.1994Fee for grant paid
01.09.1994Fee for publishing/printing paid
Opposition(s)29.09.1995No opposition filed within time limit [1995/51]
Fees paidRenewal fee
29.03.1993Renewal fee patent year 03
30.03.1994Renewal fee patent year 04
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Documents cited:Search[A]JP5629099  ;
 [A]US4850795  ;
 [A]EP0201912  ;
 [A]US4900225  ;
 [A]GB693727
 [A]  - COMPRESSED AIR MAGAZINE,Vol.9,September 1985 Washington,USA. "The X-Flo Compressor-A Machine Whose Time Has Come." Page 30-34.*the whole document
 [A]  - PATENT ABSTRACTS OF JAPAN vol. 5, no. 80 (M-70)(752) 26 May 1981, & JP-A-56 29099 (HITACHI) 23 March 1981,, & JP5629099 A 19810323
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.