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Extract from the Register of European Patents

EP About this file: EP0692297

EP0692297 - Gas prepurification [Right-click to bookmark this link]
StatusThe application is deemed to be withdrawn
Status updated on  09.01.1998
Database last updated on 02.08.2024
Most recent event   Tooltip09.01.1998Application deemed to be withdrawnpublished on 25.02.1998 [1998/09]
Applicant(s)For all designated states
PRAXAIR TECHNOLOGY, INC.
39 Old Ridgebury Road
Danbury, CT 06810-5113 / US
[1996/03]
Inventor(s)01 / Prasad, Ravi
12 Yardley Lane
East Amherst (14051) New York / US
[1996/03]
Representative(s)Schwan, Gerhard
Schwan Schwan Schorer
Patentanwälte
Bauerstrasse 22
80796 München / DE
[N/P]
Former [1996/03]Schwan, Gerhard, Dipl.-Ing.
Elfenstrasse 32
D-81739 München / DE
Application number, filing date95111089.914.07.1995
[1996/03]
Priority number, dateUS1994027299215.07.1994         Original published format: US 272992
[1996/03]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0692297
Date:17.01.1996
Language:EN
[1996/03]
Type: A3 Search report 
No.:EP0692297
Date:23.10.1996
[1996/43]
Search report(s)(Supplementary) European search report - dispatched on:EP04.09.1996
ClassificationIPC:B01D53/22
[1996/03]
CPC:
B01D53/268 (EP); B01D53/226 (EP); B01D53/229 (EP)
Designated contracting statesDE,   FR,   IT [1996/03]
TitleGerman:Gasvorreinigung[1996/03]
English:Gas prepurification[1996/03]
French:Prepurification de gaz[1996/03]
Examination procedure31.10.1996Examination requested  [1997/01]
22.04.1997Despatch of a communication from the examining division (Time limit: M04)
02.09.1997Application deemed to be withdrawn, date of legal effect  [1998/09]
01.10.1997Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time  [1998/09]
Fees paidRenewal fee
23.06.1997Renewal fee patent year 03
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Documents cited:Search[DY]US4881953  (PRASAD RAVI [US], et al) [DY] 1-20 * column W *;
 [Y]EP0463535  (UNION CARBIDE IND GASES TECH [US]) [Y] 1-20 * column 4, line 12 - column 7, line 55; figures 1,2 *;
 [A]US4952219  (DIMARTINO SR STEPHEN P [US]) [A] 1-20 * column W *;
 [A]US5240472  (SIRCAR SHIVAJI [US]) [A] 1-20 * column W *
by applicantUS5226932
    - R. JAIN, Process for preventing Degradation of Gas Separation Membranes Due to Oil Vapors, LEXINGTON, KENTUCKY, NORTH AMERICAN MEMBRANE SOCIETY, (19920517) * Conference in Lexington, Kentucky; May 17-20, 1992 *
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.