Extract from the Register of European Patents

EP About this file: EP0657696

EP0657696 - Heat exchanger for combustion apparatus [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  25.06.1999
Database last updated on 11.04.2026
Most recent event   Tooltip17.02.2006Change - lapse in a contracting state
Updated state(s): FR
published on 05.04.2006  [2006/14]
Applicant(s)For all designated states
Chiyoda Corporation
12-1, 2-chome Tsurumi-chuo Tsurumi-ku Yokohama-shi
Kanagawa-ken / JP
For all designated states
FURNACE TECHNO CO LTD Sawadaseitoku Bld.
4-7 Horaicho 2-chome, Naka-ku Yokohama-shi
Kanagawa-ken / JP
[N/P]
Former [1995/24]For all designated states
Chiyoda Corporation
12-1, 2-chome Tsurumi-chuo Tsurumi-ku
Yokohama-shi Kanagawa-ken / JP
For all designated states
FURNACE TECHNO CO LTD Sawadaseitoku Bld.
4-7 Horaicho 2-chome, Naka-ku
Yokohama-shi, Kanagawa-ken / JP
Inventor(s)01 / Bunya, Shunzo, c/o Chiyoda Corporation
12-1 Tsurumi Chuo 2-chome, Tsurumi-ku
Yokohama-shi, Kanagawa-ken / JP
02 / Kaji, Hitoshi, c/o Chiyoda Corporation
12-1 Tsurumi Chuo 2-chome, Tsurumi-ku
Yokohama-shi, Kanagawa-ken / JP
03 / Hirose, Yasuo, c/o Furnace Techno Co., Ltd.
Sawadaseitoku Bldg, 4-7 Horaicho 2-chome, Naka-ku
Yokohama-shi, Kanagawa-ken / JP
[1995/24]
Representative(s)Allam, Peter Clerk
Lloyd Wise Commonwealth House, 1-19 New Oxford Street
London WC1A 1LW / GB
[N/P]
Former [1995/24]Allam, Peter Clerk
LLOYD WISE, TREGEAR & CO. Norman House 105-109 Strand
London WC2R 0AE / GB
Application number, filing date94309067.006.12.1994
[1995/24]
Priority number, dateJP1993030643907.12.1993         Original published format: JP 30643993
JP1994029476129.11.1994         Original published format: JP 29476194
[1995/24]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0657696
Date:14.06.1995
Language:EN
[1995/24]
Type: A3 Search report 
No.:EP0657696
Date:15.01.1997
[1997/03]
Type: B1 Patent specification 
No.:EP0657696
Date:19.08.1998
Language:EN
[1998/34]
Search report(s)(Supplementary) European search report - dispatched on:EP09.11.1995
ClassificationIPC:F23L15/02, F28D17/02
[1995/52]
CPC:
F28D17/02 (EP,US); F28D17/00 (KR); F23L15/02 (EP,US);
Y02E20/34 (EP,US)
Former IPC [1995/24]F23L15/02
Designated contracting statesDE,   FR,   GB [1995/24]
TitleGerman:Wärmetauscher für Verbrennungsvorrichtung[1995/24]
English:Heat exchanger for combustion apparatus[1995/24]
French:Echangeur de chaleur pour appareil de combustion[1995/24]
Examination procedure15.11.1996Examination requested  [1997/02]
20.02.1997Despatch of a communication from the examining division (Time limit: M06)
25.09.1997Reply to a communication from the examining division
30.09.1997Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time
27.10.1997Despatch of communication of intention to grant (Approval: No)
06.02.1998Despatch of communication of intention to grant (Approval: later approval)
19.02.1998Communication of intention to grant the patent
29.04.1998Fee for grant paid
29.04.1998Fee for publishing/printing paid
Opposition(s)20.05.1999No opposition filed within time limit [1999/32]
Request for further processing for:30.09.1997Request for further processing filed
25.09.1997Full payment received (date of receipt of payment)
Request granted
10.10.1997Decision despatched
25.09.1997Request for further processing filed
25.09.1997Full payment received (date of receipt of payment)
Request deemed not to be filed
10.10.1997Decision despatched
24.09.1997Request for further processing filed
24.09.1997Full payment received (date of receipt of payment)
Request deemed not to be filed
10.10.1997Decision despatched
25.09.1997Request for further processing filed
25.09.1997Full payment received (date of receipt of payment)
Request deemed not to be filed
10.10.1997Decision despatched
Fees paidRenewal fee
11.12.1996Renewal fee patent year 03
12.12.1997Renewal fee patent year 04
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Lapses during opposition  TooltipFR19.08.1998
[2006/14]
Former [1999/36]FR15.01.1999
Documents cited:Search[Y] FR2078916  (LINDE AG et al.) [Y] 1,2,4,8,11 * page 2, line 6 - line 40 * * page 6, line 12 - line 37; figure 5 *
 [Y] EP0526172  (FURNACE TECHNO CO LTD SAWADASE et al.) [Y] 1,2,4,8 * column W *
 [Y] US5275556  (HIROSE YASUO et al.)
 [Y] US4850862  (BJERKLIE JOHN W et al.) [Y] 11 * column 2, line 20 - column 3, line 58; figure 1 *
 [A] GB2183811  (HOWDEN JAMES & CO LTD et al.) [A] 1 * the whole document *
 [A] GB1435101  (APPLEGATE G et al.) [A] 1 * column W *
 [A] FR1059955  (POWER JETS RES & DEV LTD et al.) [A] 9,10 * figure 2 *
 [A] FR1382962  (SVENSKA ROTOR MASKINER AB et al.) [A] 9,10 * figure 2 *
 [A] DE1113534  (KRAFTANLAGEN AG et al.) [A] 9,10 * figure 1 *
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