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Expired Canadian patentCanada

Apparatus for the combatting of marine growth on offshore structures

CA 1330877 C · Owner: Iev International Pty. Limited · Inventors: Do, Christopher Nghia

CIPO record

Overview

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

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Abstract From the Canadian patent

Apparatus (1) for removing marine growth from and for preventing re-growth on, offshore marine structures said apparatus comprising flexible multi-component floating rings (2) and submerged rings (3) being adapted to surround a structural support member of the offshore marine structure, the apparatus being powered by the utilization of ocean forces in the form of waves, swells tides and, currents whereby marine growth is removed from and, prevented from re-establishing on the structural support, member by means of the reciprocating motion of the apparatus about the structural support member.

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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 July 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 26, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 10, 1988
GrantedJuly 26, 1994
Term endedJuly 26, 2011
Patent numberCA 1330877 C
Classification (IPC)B63C11/52 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedNov 10, 1988Patent grantedJuly 26, 1994Term endedJuly 26, 2011

Sources & verification

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