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Extract from the Register of European Patents

EP About this file: EP0946323

EP0946323 - NIOBIUM POWDERS AND NIOBIUM ELECTROLYTIC CAPACITORS [Right-click to bookmark this link]
StatusPatent maintained as amended
Status updated on  13.05.2011
Database last updated on 20.12.2024
Most recent event   Tooltip13.05.2011Patent maintained (B2 publication)published on 15.06.2011  [2011/24]
Applicant(s)For all designated states
CABOT CORPORATION
Two Seaport Lane
Suite 1300
Boston, Massachusetts 02210-2019 / US
[N/P]
Former [2011/24]For all designated states
CABOT CORPORATION
Two Seaport Lane, Suite 1300
Boston, Massachusetts 02210-2019 / US
Former [2001/18]For all designated states
CABOT CORPORATION
Two Seaport Lane, Suite 1300
Boston, Massachusetts 02210-2019 / US
Former [1999/40]For all designated states
CABOT CORPORATION
75 State Street
Boston, MA 02109-1806 / US
Inventor(s)01 / FIFE, James, A.
903 Neversink Street
Reading, PA 19606 / US
02 / LIU, Jane, Jia
1141 Little John Way
San Jose, CA 95129 / US
03 / STEELE, Roger, W.
P.O. Box 182
Neffs, PA 18065 / US
[1999/40]
Representative(s)Grünecker Patent- und Rechtsanwälte PartG mbB
Leopoldstraße 4
80802 München / DE
[N/P]
Former [2008/23]Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
Leopoldstrasse 4
80802 München / DE
Former [2008/21]Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
Leopoldstrasse 4
80802 München / DE
Former [2001/12]Goldbach, Klara, Dr.
Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät Maximilianstrasse 58
80538 München / DE
Former [1999/40]Attfield, Donald James
Barker Brettell 138 Hagley Road Edgbaston
Birmingham B16 9PW / GB
Application number, filing date97946465.805.11.1997
[1999/40]
WO1997US19949
Priority number, dateUS19960029561P07.11.1996         Original published format: US 29561 P
US1997096283003.11.1997         Original published format: US 962830
[1999/40]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9819811
Date:14.05.1998
Language:EN
[1998/19]
Type: A1 Application with search report 
No.:EP0946323
Date:06.10.1999
Language:EN
The application published by WIPO in one of the EPO official languages on 14.05.1998 takes the place of the publication of the European patent application.
[1999/40]
Type: B1 Patent specification 
No.:EP0946323
Date:29.10.2003
Language:EN
[2003/44]
Type: B2 New European patent specification 
No.:EP0946323
Date:15.06.2011
Language:EN
[2011/24]
Search report(s)International search report - published on:EP14.05.1998
ClassificationIPC:B22F1/00, H01G9/042, H01G9/052
[1999/40]
CPC:
H01G9/0525 (EP,US); C22C1/045 (EP,US); B22F2998/00 (EP,US)
C-Set:
B22F2998/00, B22F9/023 (EP,US)
Designated contracting statesDE,   GB,   PT [1999/40]
TitleGerman:NIOBIUMPULVER UND DIESES VERWENDENDER ELEKTROLYTKONDENSATEUR[1999/40]
English:NIOBIUM POWDERS AND NIOBIUM ELECTROLYTIC CAPACITORS[1999/40]
French:POUDRES DE NIOBIUM ET CONDENSATEURS ELECTROLYTIQUES AU NIOBIUM[1999/40]
Entry into regional phase31.05.1999National basic fee paid 
31.05.1999Designation fee(s) paid 
31.05.1999Examination fee paid 
Examination procedure18.05.1998Request for preliminary examination filed
International Preliminary Examining Authority: EP
31.05.1999Examination requested  [1999/40]
04.10.1999Despatch of a communication from the examining division (Time limit: M04)
04.02.2000Reply to a communication from the examining division
17.10.2000Date of oral proceedings
03.11.2000Despatch of communication that the application is refused, reason: substantive examination {1}
03.11.2000Minutes of oral proceedings despatched
20.02.2003Communication of intention to grant the patent
27.06.2003Fee for grant paid
27.06.2003Fee for publishing/printing paid
Appeal following examination09.01.2001Appeal received No.  T0410/01
13.03.2001Statement of grounds filed
30.09.2002Result of appeal procedure: remittal for grant
16.07.2002Date of oral proceedings
25.07.2002Minutes of oral proceedings despatched
Divisional application(s)EP00122417.9   Application deemed to be withdrawn  : 14.11.2000
EP00122571.3  / EP1075884
Opposition(s)Opponent(s)01  29.07.2004    ADMISSIBLE
Roy Marsh
Hoffmann . Eitle Arabellastrasse 4
81925 München / DE
Opponent's representative
Hoffmann Eitle, et al, et al
Patent- und Rechtsanwälte PartmbB
Arabellastraße 30
81925 München / DE
 [N/P]
Former [2004/39]
Opponent(s)01  29.07.2004    ADMISSIBLE
Roy Marsh
Hoffmann . Eitle Arabellastrasse 4
81925 München / DE
Opponent's representative
HOFFMANN - EITLE, et al, et al
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München / DE
06.09.2004Invitation to proprietor to file observations on the notice of opposition
15.07.2005Reply of patent proprietor to notice(s) of opposition
01.02.2007Date of oral proceedings
14.02.2007Despatch of minutes of oral proceedings
14.02.2007Despatch of communication that the patent will be revoked
25.11.2009Despatch of a communication from the opposition division (Time limit: M02)
21.12.2009Reply to a communication from the opposition division
16.02.2010Despatch of a communication from the opposition division (Time limit: M02)
06.04.2010Reply to a communication from the opposition division
15.04.2010Despatch of a communication from the opposition division (Time limit: M04)
13.07.2010Reply to a communication from the opposition division
22.09.2010Despatch of interlocutory decision in opposition
02.10.2010Legal effect of interlocutory decision in opposition
19.01.2011Despatch of communication that the patent will be maintained as amended
20.04.2011Fee for printing new specification paid
Appeal following opposition17.04.2007Appeal received No.  T0682/07
25.06.2007Statement of grounds filed
28.07.2009Result of appeal procedure: maintenance in amended form
28.07.2009Date of oral proceedings
06.08.2009Minutes of the oral proceedings despatched
Fees paidRenewal fee
08.11.1999Renewal fee patent year 03
10.11.2000Renewal fee patent year 04
07.11.2001Renewal fee patent year 05
07.11.2002Renewal fee patent year 06
Opt-out from the exclusive  Tooltip
competence of the Unified
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  TooltipPT05.05.2006
[2006/49]
Cited inInternational search[A]JPS6484656  ;
 [X]JPS5739043  ;
 [X]GB1549702  (NCR INC) [X] 1,11 * page 1, column 1, line 11 - line 46 * * page 2, column 1, line 1 - line 58 * * table - * * claim - *;
 [A]US4548672  (ALBRECHT WOLF-WIGAND [DE], et al) [A] 37,49,53 * column 1, line 43 - line 61 * * column 2, line 20 - column 49 * * claim - *;
 [X]US4954169  (BEHRENS DIETER [DE]) [X] 1,11 * column 2, line 32 - column 3, line 4 * * column 4, line 1 - line 10 * * claim - *;
 [A]US5284531  (FIFE JAMES A [US]) [A] 1,11 * see whole document *;
 [X]US5448447  (CHANG HONGJU [US]) [X] 1,11,37,49,53 * see whole document *;
 [X]  - JACKSON N F ET AL, "The use of niobium as an anode material in liquid filled electrolytic capacitors", ELECTROCOMPONENT SCIENCE AND TECHNOLOGY, SEPT. 1974, UK, ISSN 0305-3091, vol. 1, no. 1, pages 27 - 37, XP002057685 [X] 1,11 * page 27, column 1, line 1 - page 28, column 1, line 18 * * page 30, column 1, line 10 - line 35 * * table VI *
 [A]  - PATENT ABSTRACTS OF JAPAN, (19890717), vol. 013, no. 312, Database accession no. (E - 788), & JP01084656 A 19890329 (TOSHIBA CORP) [A] 37,49,53 * abstract *
 [X]  - PATENT ABSTRACTS OF JAPAN, (19820619), vol. 006, no. 109, Database accession no. (M - 137), & JP57039043 A 19820304 (MATSUSHITA ELECTRIC IND CO LTD) [X] 1,11 * abstract *
ExaminationUS5605561
    - Klaus Schulze Symposium, TMS, 1994, p. 37,40,48
by applicantUS4960471
 US4964906
 US5011742
OppositionUS3169862
 US3849124
 US4084965
 US4164455
 US4347084
 JPS60121207
 US5448447
    - J. Japan. Inst. Metals, Vol. 56, No. 4 (1992) PP 464 - 471
    - M. KREHL, K. SCHULZE, G. PETZOW, "The Influence of Gas Atmosphere on the First-Stage Sintering of High-Purity Niobium Powders", Metallurgical Transactions A, (198406), vol. 15A, doi:doi:10.1007/BF02644705, XP008091195

DOI:   http://dx.doi.org/10.1007/BF02644705
    - "Powder Metal Technologies and Applications", ASM Handbook, (199812), vol. 7, ISBN 0871703874
    - N.F. JACKSON & J.C. HENDY, "The use of niobium as an anode material in liquid filled electrolytic capacitors", Electrocomponent Science and Technology, GORDON & BREACH SCIENCE PUBLISHERS LTD. GB, (19740121), vol. 1, pages 27 - 37, XP002057685
    - Relationship between the specific charge of niobium anodes and parameters of their porous structure Moscow Institute of Chemical Technology No. 5(341) pp.61-64, May 1991 Yu. V. Levinskii et al
    - Interrelationship between the properties of powders, the conditions of pressing and sintering, and the structure of porous niobium Yu. V. Levinskii et al Moscow Institute for Precision Chemical Technology, no.3(327), pp. 30-33, March 1990
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.