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Extract from the Register of European Patents

EP About this file: EP0668469

EP0668469 - Super off-stoichiometric combustion method [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  05.06.1998
Database last updated on 02.09.2024
Most recent event   Tooltip05.06.1998No opposition filed within time limitpublished on 22.07.1998 [1998/30]
Applicant(s)For all designated states
PRAXAIR TECHNOLOGY, INC.
39 Old Ridgebury Road
Danbury, CT 06810-5113 / US
[1995/34]
Inventor(s)01 / Kobayashi, Hisashi
170 Barger Street
Putnam Valley, New York 10579 / US
[1995/34]
Representative(s)Schwan, Gerhard
Schwan Schwan Schorer
Patentanwälte
Bauerstrasse 22
80796 München / DE
[N/P]
Former [1995/34]Schwan, Gerhard, Dipl.-Ing.
Elfenstrasse 32
D-81739 München / DE
Application number, filing date95102189.816.02.1995
[1995/34]
Priority number, dateUS1994019799117.02.1994         Original published format: US 197991
[1995/34]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0668469
Date:23.08.1995
Language:EN
[1995/34]
Type: A3 Search report 
No.:EP0668469
Date:24.04.1996
[1996/17]
Type: B1 Patent specification 
No.:EP0668469
Date:30.07.1997
Language:EN
[1997/31]
Search report(s)(Supplementary) European search report - dispatched on:EP05.03.1996
ClassificationIPC:F23C6/00, F23L7/00
[1995/34]
CPC:
F23C6/045 (EP,US); F23D11/00 (KR); F23C2201/102 (EP,US)
Designated contracting statesBE,   DE,   ES,   FR,   IT,   NL [1997/11]
Former [1995/34]BE,  DE,  ES,  FR,  IT,  NL,  PT 
TitleGerman:Super-Nichtstöchiametrisches Verbrennungsverfahren[1995/34]
English:Super off-stoichiometric combustion method[1995/34]
French:Procédé de combustion totalement non-stoechiométrique[1995/34]
Examination procedure21.06.1996Examination requested  [1996/34]
20.12.1996Despatch of communication of intention to grant (Approval: Yes)
23.01.1997Communication of intention to grant the patent
03.03.1997Fee for grant paid
03.03.1997Fee for publishing/printing paid
Opposition(s)05.05.1998No opposition filed within time limit [1998/30]
Fees paidRenewal fee
17.01.1997Renewal fee patent year 03
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Documents cited:Search[Y]JPS5995309  ;
 [A]JPS62280507  ;
 [A]JPS58129105  ;
 [A]JPS5824706  ;
 [A]US4511325  (VOORHEIS TEMPLE S [US]) [A] 1 * figures 1,2; claim 1 *;
 [A]EP0385499  (MITSUBISHI HEAVY IND LTD [JP]) [A] 1 * figure 1; claim 1 *;
 [Y]US5242296  (TUSON GEOFFREY B [US], et al) [Y] 1-9 * the whole document *
 [Y]  - PATENT ABSTRACTS OF JAPAN, (19840921), vol. 008, no. 207, Database accession no. (M - 327), & JP59095309 A 19840601 (BABCOCK HITACHI KK) [Y] 1-9 * abstract *
 [A]  - PATENT ABSTRACTS OF JAPAN, (19880518), vol. 012, no. 164, Database accession no. (M - 698), & JP62280507 A 19871205 (MITSUBISHI HEAVY IND LTD;OTHERS: 01) [A] 1-4 * abstract *
 [A]  - PATENT ABSTRACTS OF JAPAN, (19831028), vol. 007, no. 244, Database accession no. (M - 252), & JP58129105 A 19830802 (MITSUBISHI JUKOGYO KK) [A] 1 * abstract *
 [A]  - PATENT ABSTRACTS OF JAPAN, (19830430), vol. 007, no. 102, Database accession no. (M - 211), & JP58024706 A 19830214 (KOBE SEIKOSHO KK) [A] 1 * abstract *
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.