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Extract from the Register of European Patents

EP About this file: EP0471816

EP0471816 - PROCESS FOR RECOVERING HEAVY METALS FROM SPENT CATALYSTS [Right-click to bookmark this link]
Former [1992/09]PROCESS FOR RECOVERING VALUABLE METALS FROM SPENT CATALYSTS
[1998/30]
StatusNo opposition filed within time limit
Status updated on  28.05.1999
Database last updated on 28.03.2026
Most recent event   Tooltip15.06.2007Lapse of the patent in a contracting state
New state(s): LU		published on 18.07.2007  [2007/29]
Applicant(s)For all designated states
DAKOTA CATALYST PRODUCTS, INC.
15, 12th Avenue East P.O.Box 1085
Williston, ND 58802-1085 / US
[1997/52]
Former [1992/09]For all designated states
HOWARD, Robert, A.
#10 Dartmoor Street
Sugarland, TX 77499 / US
For all designated states
BARNES, Wilson, R.
4111 Elderwood Drive
Seabrook, TX 77586 / US
Inventor(s)01 / Howard, Robert, A.
10 Dartmoor Street
Sugarland, TX 77499 / US
02 / Barnes, Wilson, R.
4111 Elderwood Drive
Seabrook, TX 77586 / US
[1998/30]
Former [1992/09]01 / see applicant
...
Representative(s)Spencer, Graham Easdale
A.A. Thornton & CO Northumberland House 303-306, High Holborn
London WC1V 7LE / GB
[1992/09]
Application number, filing date91905462.701.03.1991
[1992/09]
WO1991US01385
Priority number, dateUS1990048679701.03.1990         Original published format: US 486797
[1992/09]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9113179
Date:05.09.1991
Language:EN
[1991/21]
Type: A1 Application with search report 
No.:EP0471816
Date:26.02.1992
Language:EN
The application published by WIPO in one of the EPO official languages on 05.09.1991 takes the place of the publication of the European patent application.
[1992/09]
Type: B1 Patent specification 
No.:EP0471816
Date:22.07.1998
Language:EN
[1998/30]
Search report(s)International search report - published on:US05.09.1991
(Supplementary) European search report - dispatched on:EP21.07.1992
ClassificationIPC:C22B7/00, C22B4/04
[1992/37]
CPC:
C22B34/225 (EP,US); C22B23/026 (EP,US); C22B34/345 (EP,US);
C22B4/04 (EP,US); C22B7/009 (EP,US); Y02P10/20 (EP,US)
Former IPC [1992/09]C22B11/00
Designated contracting statesAT,   BE,   CH,   DE,   DK,   ES,   FR,   GB,   GR,   IT,   LI,   LU,   NL,   SE [1992/09]
TitleGerman:VERFAHREN ZUR RÜCKGEWINNUNG VON SCHWERMETALLEN AUS VERBRAUCHTEN KATALYSATOREN[1998/30]
English:PROCESS FOR RECOVERING HEAVY METALS FROM SPENT CATALYSTS[1998/30]
French:PROCEDE DE RECUPERATION DE METAUX LOURDS A PARTIR DE CATALYSEURS USES[1998/30]
Former [1992/09]VERFAHREN ZUR RÜCKGEWINNUNG WERTVOLLER METALLE VON VERBRAUCHTEN KATALYSATOREN
Former [1992/09]PROCESS FOR RECOVERING VALUABLE METALS FROM SPENT CATALYSTS
Former [1992/09]PROCEDE DE RECUPERATION DE METAUX DE VALEUR A PARTIR DE CATALYSEURS USES
Entry into regional phase28.11.1991National basic fee paid 
28.11.1991Search fee paid 
28.11.1991Designation fee(s) paid 
29.11.1991Examination fee paid 
Examination procedure29.11.1991Examination requested  [1992/09]
30.01.1992Request for preliminary examination filed
International Preliminary Examining Authority: DE
05.04.1995Despatch of a communication from the examining division (Time limit: M06)
18.01.1996Reply to a communication from the examining division
20.06.1996Despatch of communication of intention to grant (Approval: Yes)
07.02.1997Despatch of communication that the application is refused, reason: formalities examination [1997/28]
17.02.1997Application refused, date of legal effect [1997/28]
09.12.1997Communication of intention to grant the patent
06.03.1998Fee for grant paid
06.03.1998Fee for publishing/printing paid
Opposition(s)23.04.1999No opposition filed within time limit [1999/28]
Request for further processing for:06.08.1997Request for further processing filed
05.08.1997Full payment received (date of receipt of payment)
Request granted
09.12.1997Decision despatched
18.01.1996Request for further processing filed
19.01.1996Full payment received (date of receipt of payment)
Request deemed not to be filed
20.02.1996Decision despatched
Request for re-establishment of rights:06.08.1997Date of receipt
Fees paidRenewal fee
09.03.1993Renewal fee patent year 03
09.03.1994Renewal fee patent year 04
09.03.1995Renewal fee patent year 05
08.03.1996Renewal fee patent year 06
12.03.1997Renewal fee patent year 07
10.03.1998Renewal fee patent year 08
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Patent Court		 See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Lapses during opposition  TooltipAT22.07.1998
CH22.07.1998
ES22.07.1998
GR22.07.1998
LI22.07.1998
DK22.10.1998
SE22.10.1998
LU01.03.1999
[2007/29]
Former [2003/45]AT22.07.1998
CH22.07.1998
ES22.07.1998
GR22.07.1998
LI22.07.1998
DK22.10.1998
SE22.10.1998
Former [2002/25]AT22.07.1998
CH22.07.1998
ES22.07.1998
GR22.07.1998
LI22.07.1998
SE22.10.1998
Former [2001/23]AT22.07.1998
CH22.07.1998
GR22.07.1998
LI22.07.1998
SE22.10.1998
Former [2000/17]AT22.07.1998
CH22.07.1998
LI22.07.1998
SE22.10.1998
Former [1999/29]AT22.07.1998
SE22.10.1998
Former [1999/22]AT22.07.1998
Documents cited:Search[Y] JP58199832  
 [A] SU301361  
 [Y]   PATENT ABSTRACTS OF JAPAN vol. 8, no. 41 (C-211)22 February 1984 & JP-A-58 199 832 ( KIYATARAA KOGYO KK ) 21 November 1983 [Y]
 [A]   WORLD PATENTS INDEX Section Ch, Derwent Publications Ltd., London, GB; Class M, AN 72-15551T & SU-A-301 361 (CHELYABINSK ELECTROMETALL) October 1972 [A]
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.