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Expired Canadian patentCanada

Automatic system and method for testing marine streamers of seismic exploration systems

CA 1107851 A · Owner: Chevron Research And Technology Company · Inventors: Brown, Earl J.; Sie, Swan A.

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

In accordance with the present invention a marine streamer, test system and method (MARSTEST) is disclosed for testing fieldworthiness of hydrophone sections within the streamer under both passive and dynamic operating conditions. With regard to a passive operating state, five (5) test parameters are automatically generated and compared with upper and lower limits stored within a mini-computer housed aboard the marine exploration boat. Any out-of-specification values trip an alarm network and a printer to warn of the malfunctioning streamer section. Result: replacement or other repair can be effected. With regard to dynamic operating conditions acceptable "signature", characteristics of the …

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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 August 25, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 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.
FiledApril 28, 1978
GrantedAugust 25, 1981
Term endedAugust 25, 1998
Patent numberCA 1107851 A
Classification (IPC)G01V11/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedApril 28, 1978Patent grantedAug 25, 1981Term endedAug 25, 1998

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