(19)
(11) EP 3 831 809 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
18.10.2023 Bulletin 2023/42

(45) Mention of the grant of the patent:
13.09.2023 Bulletin 2023/37

(21) Application number: 20211599.4

(22) Date of filing: 03.12.2020
(51) International Patent Classification (IPC): 
C07C 273/00(2006.01)
F04D 1/06(2006.01)
 F04D 7/06(2006.01)
F04D 31/00(2006.01)
(52) Cooperative Patent Classification (CPC):
F04D 1/06; F04D 15/0016; F04D 7/06; F04D 13/14; F04D 9/003

(54)

CENTRIFUGAL PUMP FOR PROCESSING MOLTEN UREA AND RELATIVE PLANT

KREISELPUMPE ZUR VERARBEITUNG VON GESCHMOLZENEM HARNSTOFF UND ENTSPRECHENDE ANLAGE

POMPE CENTRIFUGE POUR LE TRAITEMENT D'URÉE FONDUE ET INSTALLATION RELATIVE

(84) Designated Contracting States:
AL 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

(30) Priority: 06.12.2019 IT 201900023160

(43) Date of publication of application:
09.06.2021 Bulletin 2021/23

(73) Proprietor: Proman AG
8832 Wollerau Schwyz (CH)

(72) Inventors:
  • SANTUCCI, Roberto
    21050 Gorla Maggiore (VA) (IT)
  • DI RUOCCO, Giuseppe
    23900 Lecco (IT)
  • DE AMICIS, Alberto
    20097 San Donato Milanese (MI) (IT)

(74) Representative: De Gregori, Antonella et al
BIRD & BIRD SOCIETA TRA AVVOCATI S.R.L. Via Porlezza, 12
20123 Milano
20123 Milano (IT)


(56) References cited: : 
CN-A- 109 404 292
CN-U- 202 560 651
US-A1- 2005 056 147
US-A1- 2019 211 833
 CN-A- 109 723 618
US-A- 3 118 386
US-A1- 2017 191 480
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).