Extract from the Register of European Patents

EP About this file: EP4401877

EP4401877 - CATALYST FOR THE PARTIAL OXIDATION OF N-BUTANE TO MALEIC ANHYDRIDE [Right-click to bookmark this link]
StatusRequest for examination was made
Status updated on  20.06.2024
Database last updated on 30.03.2026
FormerThe international publication has been made
Status updated on  25.03.2023
Formerunknown
Status updated on  12.07.2022
Most recent event   Tooltip22.07.2025New entry: Renewal fee paid 
Applicant(s)For all designated states
POLYNT S.P.A.
Via Enrico Fermi, 51
24020 Scanzorosciate / IT
[2024/30]
Inventor(s)01 / CORTELLI, Carlotta
40122 Bologna / IT
02 / FRATALOCCHI, Laura
20131 Milano / IT
03 / GRAZIA, Lorenzo
24124 Bergamo / IT
 [2024/30]
Representative(s)Modiano, Micaela Nadia, et al
Modiano & Partners
Via Meravigli, 16
20123 Milano / IT
[2024/30]
Application number, filing date22735202.804.07.2022
[2024/30]
WO2022EP68395
Priority number, dateIT2021002363914.09.2021         Original published format: IT202100023639
[2024/30]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2023041215
Date:23.03.2023
Language:EN
[2023/12]
Type: A1 Application with search report 
No.:EP4401877
Date:24.07.2024
Language:EN
The application published by WIPO in one of the EPO official languages on 23.03.2023 takes the place of the publication of the European patent application.
[2024/30]
Search report(s)International search report - published on:EP23.03.2023
ClassificationIPC:B01J27/198, B01J27/199, B01J23/847, C07C51/215, C07C57/145, C07D307/60, B01J37/16, B01J37/08, B01J35/02, B01J35/10
[2024/30]
CPC:
B01J27/198 (EP,KR,US); B01J27/199 (EP,US); B01J23/002 (EP);
B01J23/8472 (EP); B01J23/8474 (EP); B01J35/50 (KR);
B01J35/55 (EP,US); B01J35/613 (EP,KR); B01J37/0018 (EP);
B01J37/08 (US); B01J37/086 (EP); B01J37/088 (EP);
B01J37/16 (EP,KR); C07C51/215 (EP,KR); C07D307/60 (EP,KR,US);
B01J2523/00 (EP,KR) (-)
C-Set:
C07C51/215, C07C57/145 (EP);
B01J2523/00, B01J2523/17, B01J2523/51, B01J2523/54, B01J2523/55 (EP);
B01J2523/00, B01J2523/17, B01J2523/51, B01J2523/55 (EP);
B01J2523/00, B01J2523/51, B01J2523/54, B01J2523/55, B01J2523/842 (EP);
B01J2523/00, B01J2523/51, B01J2523/54, B01J2523/55, B01J2523/845 (EP);
B01J2523/00, B01J2523/51, B01J2523/55, B01J2523/842 (EP);
B01J2523/00, B01J2523/51, B01J2523/55, B01J2523/845 (EP)
(-)
Designated contracting statesAL,   AT,   BE,   BG,   CH,   CY,   CZ,   DE,   DK,   EE,   ES,   FI,   FR,   GB,   GR,   HR,   HU,   IE,   IS,   IT,   LI,   LT,   LU,   LV,   MC,   MK,   MT,   NL,   NO,   PL,   PT,   RO,   RS,   SE,   SI,   SK,   SM,   TR [2024/30]
Extension statesBA26.03.2024
TitleGerman:KATALYSATOR ZUR PARTIELLEN OXIDATION VON N-BUTAN ZU MALEINSÄUREANHYDRID[2024/30]
English:CATALYST FOR THE PARTIAL OXIDATION OF N-BUTANE TO MALEIC ANHYDRIDE[2024/30]
French:CATALYSEUR POUR L'OXYDATION PARTIELLE DU N-BUTANE EN ANHYDRIDE MALÉIQUE[2024/30]
Entry into regional phase26.03.2024National basic fee paid 
26.03.2024Designation fee(s) paid 
26.03.2024Examination fee paid 
Examination procedure26.03.2024Examination requested  [2024/30]
26.03.2024Date on which the examining division has become responsible
18.09.2024Amendment by applicant (claims and/or description)
Fees paidRenewal fee
26.03.2024Renewal fee patent year 03
21.07.2025Renewal fee patent year 04
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Cited inInternational search[XI] EP3771490  (POLYNT S P A et al.)
 [XI]   YE DAIQI ET AL: "Effect of promoters on the behavior and properties of VPO catalysts for the selective oxidation of n-butane to maleic anhydride", RESEARCH ON CHEMICAL INTERMEDIATES, vol. 29, no. 3, 1 April 2003 (2003-04-01), NL, pages 271 - 284, XP055926717, ISSN: 0922-6168, DOI: 10.1163/156856703764929930

DOI:   http://dx.doi.org/10.1163/156856703764929930
 [XI]   ISHIMURA TOMOHIRO ET AL: "Vanadyl hydrogenphosphate sesquihydrate as a precursor for preparation of (VO)2P2O7 and cobalt-incorporated catalysts", JOURNAL OF MOLECULAR CATALYSIS A: CHEMICAL., vol. 158, no. 2, 1 September 2000 (2000-09-01), NL, pages 559 - 565, XP055926784, ISSN: 1381-1169, DOI: 10.1016/S1381-1169(00)00145-X

DOI:   http://dx.doi.org/10.1016/S1381-1169(00)00145-X
 [XI]   GOH ET AL: "Influence of Bi-Fe additive on properties of vanadium phosphate catalysts for n-butane oxidation to maleic anhydride", CATALYSIS TODAY, ELSEVIER, AMSTERDAM, NL, vol. 131, no. 1-4, 3 December 2007 (2007-12-03), pages 408 - 412, XP022432558, ISSN: 0920-5861, DOI: 10.1016/J.CATTOD.2007.10.059

DOI:   http://dx.doi.org/10.1016/j.cattod.2007.10.059
by applicantUS5945368
 US5360916
 US6194587
 US5137860
 EP0804963
 WO0072963
 IT202100023639
   J. CATALYSIS, vol. 143, 1993, pages 215 - 226
   J. NAT. GAS CHEM., vol. 20, 2011, pages 635 - 638
   CATAL. TODAY, vol. 164, 2011, pages 341 - 346
   APP. SURF. SCI., vol. 351, 2015, pages 243 - 249
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