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Extract from the Register of European Patents

EP About this file: EP0665816

EP0665816 - PROCESS FOR PREPARING AMMONIUM ZEOLITES OF LOW ALKALI METAL CONTENT [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  16.07.1999
Database last updated on 11.09.2024
Most recent event   Tooltip20.04.2001Lapse of the patent in a contracting state
New state(s): GR
published on 06.06.2001 [2001/23]
Applicant(s)For all designated states
PQ Corporation
Valley Forge Executive Mall P.O. Box 840
Valley Forge, PA 19482 / US
[1995/32]
Inventor(s)01 / COOPER, David, A.
124 Harper Avenue
Morrisville, PA 19067 / US
[1995/32]
Representative(s)Weisert, Annekäte, et al
Patentanwälte Kraus & Weisert Thomas-Wimmer-Ring 15
80539 München / DE
[N/P]
Former [1995/32]Weisert, Annekäte, Dipl.-Ing. Dr.-Ing., et al
Patentanwälte Kraus Weisert & Partner Thomas-Wimmer-Ring 15
D-80539 München / DE
Application number, filing date94924479.220.07.1994
[1995/32]
WO1994US08181
Priority number, dateUS1993009473722.07.1993         Original published format: US 94737
[1995/32]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9503248
Date:02.02.1995
Language:EN
[1995/06]
Type: A1 Application with search report 
No.:EP0665816
Date:09.08.1995
Language:EN
The application published by WIPO in one of the EPO official languages on 02.02.1995 takes the place of the publication of the European patent application.
[1995/32]
Type: B1 Patent specification 
No.:EP0665816
Date:09.09.1998
Language:EN
[1998/37]
Search report(s)International search report - published on:US02.02.1995
(Supplementary) European search report - dispatched on:EP03.01.1996
ClassificationIPC:C01B39/02, B01J29/08
[1996/06]
CPC:
B01J37/30 (EP,US); C01B39/20 (KR); B01J29/084 (EP,US);
Y10S423/21 (EP,US)
Former IPC [1995/32]C01B33/34, B01J29/08
Designated contracting statesAT,   BE,   CH,   DE,   DK,   ES,   FR,   GB,   GR,   IE,   IT,   LI,   LU,   MC,   NL,   PT,   SE [1995/32]
Extension statesSI06.04.1995
TitleGerman:VERFAHREN ZUR HERSTELLUNG VON AMMONIUMZEOLITHEN MIT NIEDRIGEM ALKALIMETALLGEHALT[1995/32]
English:PROCESS FOR PREPARING AMMONIUM ZEOLITES OF LOW ALKALI METAL CONTENT[1995/32]
French:PROCEDE DE PREPARATION DE ZEOLITES AMMONIACAUX A FAIBLE TENEUR EN METAUX ALCALINS[1995/32]
Entry into regional phase06.04.1995National basic fee paid 
06.04.1995Search fee paid 
06.04.1995Designation fee(s) paid 
06.04.1995Examination fee paid 
Examination procedure06.04.1995Examination requested  [1995/32]
31.05.1996Despatch of a communication from the examining division (Time limit: M06)
05.12.1996Reply to a communication from the examining division
25.02.1997Despatch of a communication from the examining division (Time limit: M04)
09.06.1997Reply to a communication from the examining division
28.08.1997Despatch of communication of intention to grant (Approval: Yes)
13.01.1998Communication of intention to grant the patent
14.04.1998Fee for grant paid
14.04.1998Fee for publishing/printing paid
Opposition(s)10.06.1999No opposition filed within time limit [1999/35]
Fees paidRenewal fee
20.06.1996Renewal fee patent year 03
23.06.1997Renewal fee patent year 04
29.06.1998Renewal fee patent year 05
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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  TooltipAT09.09.1998
GR09.09.1998
PT14.12.1998
[2001/23]
Former [1999/34]AT09.09.1998
PT14.12.1998
Former [1999/29]PT14.12.1998
Documents cited:Search   [ ] - No further relevant documents disclosed
International search[XY]US2617712  (BOND JR GEORGE R);
 [A]US3595611  (MCDANIEL CARL VANCE, et al);
 [A]US3607043  (MCDANIEL CARL VANCE, et al);
 [A]US3640680  (KOKOTAILO GEORGE T, et al);
 [A]US3677698  (SHERRY HOWARD S, et al);
 [A]US3696276  (BOLAND BERNARD W);
 [Y]US4069172  (KANAOKA MASAZUMI, et al);
 [A]US4224188  (ALAFANDI HAMID, et al);
 [A]US4265788  (EBITANI ATSUSHI, et al);
 [A]US4388224  (MOOREHEAD ERIC L);
 [Y]US4393082  (WHITE JOE L, et al);
 [Y]US4922039  (YAMADA BUNSHI [JP], et al)
 [A]  - J. of Physical Chemistry, Volume 70, No. 4, published April 1970, H.S. SHERRY, "The Ion-Exchange Properties of Zeolites. I. Univalent Ion Exchange in Synthetic Faujasite", pages 1158-1168.
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.