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Extract from the Register of European Patents

EP About this file: EP0859379

EP0859379 - Stable polysiloxane ferrofluid compositions and method of making same [Right-click to bookmark this link]
StatusThe application has been withdrawn
Status updated on  13.10.2000
Database last updated on 12.11.2024
Most recent event   Tooltip13.10.2000Withdrawal of applicationpublished on 29.11.2000 [2000/48]
Applicant(s)For all designated states
Ferrofluidics Corporation
40 Simon Street Nashua
New Hampshire 03061 / US
[N/P]
Former [1998/34]For all designated states
Ferrofluidics Corporation
40 Simon Street
Nashua New Hampshire 03061 / US
Inventor(s)01 / Raj, Kuldip
11 Christina Road
Merrimack, New Hampshire 03054 / US
02 / Rosenzweig, Ronald E.
34 Gloucester Road
Summit, New Jersey 07901 / US
03 / Aziz, Lutful M.
20 Hooker Street
Nashua, New Hampshire 03060 / US
[1998/34]
Representative(s)Kindermann, Manfred
Patentanwalt, Sperberweg 29
71032 Böblingen / DE
[N/P]
Former [1998/34]Kindermann, Manfred
Patentanwalt, Sperberweg 29
71032 Böblingen / DE
Application number, filing date98101264.426.01.1998
[1998/34]
Priority number, dateUS1997079811112.02.1997         Original published format: US 798111
[1998/34]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP0859379
Date:19.08.1998
Language:EN
[1998/34]
Search report(s)(Supplementary) European search report - dispatched on:EP16.04.1998
ClassificationIPC:H01F1/44
[1998/34]
CPC:
H01F1/44 (EP,US)
Designated contracting statesDE,   FR,   GB,   IT,   SE [1999/18]
Former [1998/34]AT,  BE,  CH,  DE,  DK,  ES,  FI,  FR,  GB,  GR,  IE,  IT,  LI,  LU,  MC,  NL,  PT,  SE 
TitleGerman:Stabile Polysiloxan Magnetflüssigkeiten und ihrer Herstellungsverfahren[1998/34]
English:Stable polysiloxane ferrofluid compositions and method of making same[1998/34]
French:Compositions de fluides magnétiques à polysiloxanes stables et leurs méthode de fabrication[1998/34]
Examination procedure29.10.1998Request for accelerated examination filed
03.11.1998Examination requested  [1998/53]
04.01.1999Despatch of a communication from the examining division (Time limit: M04)
04.01.1999Decision about request for accelerated examination - accepted: Yes
06.05.1999Reply to a communication from the examining division
19.05.1999Despatch of a communication from the examining division (Time limit: M06)
19.11.1999Reply to a communication from the examining division
10.01.2000Despatch of a communication from the examining division (Time limit: M05)
24.05.2000Reply to a communication from the examining division
11.10.2000Application withdrawn by applicant  [2000/48]
Fees paidRenewal fee
31.01.2000Renewal fee patent year 03
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Documents cited:Search[X]JPS63175401  ;
 [A]JPH06267731  ;
 [DA]US4356098  (CHAGNON MARK S);
 [DA]US3917538  (ROSENSWEIG RONALD E)
 [X]  - PATENT ABSTRACTS OF JAPAN, (19881124), vol. 012, no. 447, Database accession no. (E - 685), & JP63175401 A 19880719 (NIPPON SEIKO KK) [X] 1,2,7,9 * abstract *
 [A]  - DATABASE WPI, 1, Derwent World Patents Index, vol. 94, no. 43, Database accession no. 94-344848, XP002061311 & JPH06267731 A 19940922 (DAIKIN KOGYO KK) [A] 1,7,9-11,24,25,28-30 * abstract *
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.