(19)
(11) EP 2 541 067 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:
16.06.2021 Bulletin 2021/24

(45) Mention of the grant of the patent:
12.05.2021 Bulletin 2021/19

(21) Application number: 12173952.8

(22) Date of filing: 27.06.2012
(51) International Patent Classification (IPC): 
F04D 27/00(2006.01)
 F04D 27/02(2006.01)

(54)

Surge estimator

Pumpgrenzenanzeiger

Estimateur du marge au pompage

(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: 27.06.2011 US 201161501311 P

(43) Date of publication of application:
02.01.2013 Bulletin 2013/01

(73) Proprietor: Energy Control Technologies, Inc.
Urbandale, IA 50322 (US)

(72) Inventors:
  • NARAYANAN, Krishnan
    Urbandale, Iowa 50322 (US)
  • REINKE, Paul
    Urbandale, Iowa 50322 (US)

(74) Representative: Forresters IP LLP 
Skygarden Erika-Mann-Straße 11
80636 München
80636 München (DE)


(56) References cited: : 
EP-A2- 0 366 219
   
  • None
   
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).