EP2232001A2

Method and apparatus for facilitating continuous circulation of drilling mud during construction and maintenance of a well

Abstract

This record has no abstract on file.

Term

2.3 yearsto projected expiry

Projected expiry 21 January 2029, counted from filing; an application has no term until it is granted.

  1. Priority
  2. Filed
  3. Published
  4. Today
  5. Projected expiry

13 members in 7 offices

This recordMember, by publication datePriority claim

Priority claims5

Priority claims
DocumentOfficeKindDate
11849United States of America–
1184908United States of AmericaP
319547United States of America–
31954709United States of AmericaA
2009050047United KingdomW

Members13

Family members, oldest first
DocumentOfficeKind
CA2710564A1CanadaA1
WO2009093069A2World Intellectual Property Organization (WIPO)A2
US2009205838A1United States of AmericaA1
EP2232001A2This recordEuropean Patent Office (EPO)A2
WO2009093069A3World Intellectual Property Organization (WIPO)A3
CN102046914AChinaA
US8033338B2United States of AmericaB2
RU2010134919ARussian FederationA
EP2232001B1European Patent Office (EPO)B1
RU2485278C2Russian FederationC2
CA2710564CCanadaC
CN102046914BChinaB
BRPI0905688A2BrazilA2