(19)
(11) EP 2 189 620 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:
12.05.2021 Bulletin 2021/19

(45) Mention of the grant of the patent:
07.04.2021 Bulletin 2021/14

(21) Application number: 09175575.1

(22) Date of filing: 10.11.2009
(51) International Patent Classification (IPC): 
E21B 33/04(2006.01)

(54)

BI-DIRECTIONAL ANNULUS SEAL

ZWEIDIREKTIONALE RINGDICHTUNG

JOINT ANNULAIRE BIDIRECTIONNEL

(84) Designated Contracting States:
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 SE SI SK SM TR

(30) Priority: 25.11.2008 US 117879 P
14.05.2009 US 465966

(43) Date of publication of application:
26.05.2010 Bulletin 2010/21

(73) Proprietor: Vetco Gray, LLC
Houston, TX 77041 (US)

(72) Inventors:
  • Ellis, Steven C.
    The Woodlands, TX 77381 (US)
  • Garcia, Javier, Jr.
    Tomball, TX 77377 (US)
  • Hunter, Rick C.
    Friendswood, TX 77546 (US)
  • Nelson, John E.
    Houston, TX 77065 (US)

(74) Representative: BRP Renaud & Partner mbB Rechtsanwälte Patentanwälte Steuerberater et al
Königstraße 28
70173 Stuttgart
70173 Stuttgart (DE)


(56) References cited: : 
US-A- 4 742 874
US-A- 5 080 174
US-A- 5 174 376
US-A- 5 725 056
 US-A- 5 060 724
US-A- 5 129 660
US-A- 5 456 314
   
       
    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).