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Expired Canadian patentCanada

Submerged offshore storage facility

CA 1111263 A · Owner: Texaco Development Corporation · Inventors: Brown, George R.; Carroll, Joseph C.; Dubuisson, Sidney E.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

SUBMERGED OFFSHORE STORAGE FACILITY, (D?76,181-FB) ABSTRACT, Underwater liquid storage tank or facility adapted to hold or temporarily store varying quantities of a liquid having a density less than water. Said liquid can include crude oil and petroleum products. The facility includes means for maintaining the holding space in a full condition by the addition or removal of water. Further included is means to avoid inadvertent pollution of the surrounding water through the unintentional discharge of amounts of the less dense liquid which can be carried by water leaving the tank. Also included is means forming a protective barrier about the liquid holding tank to avoid serious leakage and …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted October 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 17, 1979
GrantedOctober 27, 1981
Term endedOctober 27, 1998
Patent numberCA 1111263 A
Classification (IPC)E02D27/52 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedJuly 17, 1979Patent grantedOct 27, 1981Term endedOct 27, 1998

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.