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Extract from the Register of European Patents

EP About this file: EP0396242

EP0396242 - The controlled precipitation and use of amorphous silicia from geothermal fluid or aqueous media having a silicic acid concentration [Right-click to bookmark this link]
StatusThe application has been refused
Status updated on  12.09.1997
Database last updated on 28.05.2024
Most recent event   Tooltip12.09.1997Refusal of applicationpublished on 29.10.1997 [1997/44]
Applicant(s)For all designated states
TASMAN PULP & PAPER CO LIMITED
National Mutual Centre, Shortland Street
Auckland / NZ
For all designated states
GEOCHEMISTRY RESEARCH LIMITED
27 Voltaire Street Karori
Wellington / NZ
[N/P]
Former [1990/45]For all designated states
TASMAN PULP & PAPER CO LIMITED
National Mutual Centre, Shortland Street
Auckland / NZ
For all designated states
GEOCHEMISTRY RESEARCH LIMITED
27 Voltaire Street
Karori, Wellington / NZ
Inventor(s)01 / Harper, Ross Thomas
87a Karori Road
Karori, Wellington / NZ
02 / Johnston, James Howard
27 Voltaire Street
Karori, Wellington / NZ
03 / Wiseman, Nicholas
Benham Road, RD 4
Rotorua / NZ
[1990/45]
Representative(s)Seaborn, George Stephen, et al
Edward Evans Barker Clifford's Inn, Fetter Lane
London EC4A 1BZ / GB
[N/P]
Former [1990/45]Seaborn, George Stephen, et al
c/o Edward Evans & Co. Chancery House 53-64 Chancery Lane
London WC2A 1SD / GB
Application number, filing date90303056.721.03.1990
[1990/45]
Priority number, dateNZ1972000228423.03.1989         Original published format: NZ 228472
NZ1970000232119.01.1990         Original published format: NZ 232170
[1990/45]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0396242
Date:07.11.1990
Language:EN
[1990/45]
Type: A3 Search report 
No.:EP0396242
Date:10.04.1991
Language:EN
[1991/15]
Search report(s)(Supplementary) European search report - dispatched on:EP22.02.1991
ClassificationIPC:C01B33/12, D21H11/00
[1990/45]
CPC:
B82Y30/00 (EP,US); C01B33/12 (EP,US); D21H17/68 (EP,US);
D21H19/40 (EP,US); C01P2002/02 (EP,US); C01P2004/03 (EP,US);
C01P2004/04 (EP,US); C01P2004/50 (EP,US); C01P2004/62 (EP,US);
C01P2004/64 (EP,US); C01P2006/10 (EP,US); C01P2006/12 (EP,US);
C01P2006/19 (EP,US); C01P2006/60 (EP,US); C01P2006/62 (EP,US);
C01P2006/63 (EP,US); C01P2006/64 (EP,US); C01P2006/80 (EP,US);
C01P2006/90 (EP,US) (-)
Designated contracting statesAT,   BE,   CH,   DE,   DK,   ES,   FR,   GB,   GR,   IT,   LI,   LU,   NL,   SE [1990/45]
TitleGerman:Kontrollierter Niederschlag und Verwendung von Amorphensiliciumoxid aus einem geothermischen Fluid oder einem wässrigen Medium mit einer ausreichenden Kieselsäurekonzentration[1990/45]
English:The controlled precipitation and use of amorphous silicia from geothermal fluid or aqueous media having a silicic acid concentration[1990/45]
French:Précipitation contolée et utilisation de silice amorphe à partir d'un fluide géothermique ou d'un medium aqueux ayant une concentration suffisante en acide silicique[1990/45]
Examination procedure16.09.1991Examination requested  [1991/46]
09.08.1993Despatch of a communication from the examining division (Time limit: M06)
30.03.1994Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time
12.04.1994Reply to a communication from the examining division
06.03.1995Despatch of a communication from the examining division (Time limit: M06)
15.09.1995Reply to a communication from the examining division
18.10.1996Despatch of communication of intention to grant (Approval: )
01.04.1997Despatch of communication that the application is refused, reason: formalities examination [1997/44]
11.04.1997Application refused, date of legal effect [1997/44]
Request for further processing for:31.03.1994Request for further processing filed
16.05.1994Full payment received (date of receipt of payment)
Request granted
13.06.1994Decision despatched
Fees paidRenewal fee
13.03.1992Renewal fee patent year 03
09.03.1993Renewal fee patent year 04
26.05.1994Renewal fee patent year 05
27.04.1995Renewal fee patent year 06
08.03.1996Renewal fee patent year 07
Penalty fee
Additional fee for renewal fee
31.03.199405   M06   Fee paid on   26.05.1994
31.03.199506   M06   Fee paid on   27.04.1995
31.03.199708   M06   Not yet paid
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Documents cited:Search[A]JP62158111  ;
 [A]DE2449803  ;
 [A]SU1414906  (UK NII TSELLYULOZNO BUMAZHNOJ [SU])
 [X]  - GEOTHERMICS vol. 18, no. 1-2, 1989, pages 287-294, Oxford, GB; H. THORDARSON et al.: "Brine clarification at Svartsengi, Iceland: effect of pH and temperature on the precipitation of silica and its properties"
 [A]  - PATENT ABSTRACTS OF JAPAN vol. 11, no. 398 (C-466)(2345), 25 December 1987; & JP - A - 62158111 (NIPPON STEEL) 14.07.1987, & JP62158111 A 19871225
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.