(19)
(11) EP 2 803 955 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:
18.10.2017 Bulletin 2017/42

(45) Mention of the grant of the patent:
13.09.2017 Bulletin 2017/37

(21) Application number: 14168052.0

(22) Date of filing: 13.05.2014
(51) International Patent Classification (IPC): 
G01F 23/296(2006.01)

(54)

Ultrasonic liquid level sensing systems

Ultraschall-Flüssigkeitsstandmesssysteme

Systèmes de détection de niveau de liquide ultrasonore

(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: 15.05.2013 US 201361823625 P
24.01.2014 US 201414163407
24.01.2014 US 201414163518

(43) Date of publication of application:
19.11.2014 Bulletin 2014/47

(73) Proprietor: Versum Materials US, LLC
Tempe, AZ 85284 (US)

(72) Inventors:
  • Birtcher, Charles Michael
    Valley Center, CA California 92082 (US)
  • Steidl, Thomas Andrew
    Escondido, CA California 92025 (US)

(74) Representative: Beck Greener 
Fulwood House 12 Fulwood Place
London WC1V 6HR
London WC1V 6HR (GB)


(56) References cited: : 
EP-A2- 0 465 878
WO-A2-2009/063194
US-B1- 6 246 154
 EP-A2- 0 745 833
DE-A1- 10 159 359
   
       
    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).