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Expired Canadian patentCanada

System for sorting seismic data in marine surveys

CA 1209239 A · Owner: Geophysical Company Of Norway A.S. · Inventors: Brandsaeter, Helge; Mjoen, Oyvind; Ommundsen, Tor A.

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Abstract From the Canadian patent

Abstract of the Disclosure A system for sorting data from seismic surveys at sea. The data are acquired by signal transmission/receiving by streamer cables, which streamers are equipped with position-defining instruments. For the sorting the, area to be surveyed is subdivided into squares of defined size and position. The data provided through the measurements is sorted, and accepted data is processed further and transferred to the individual squares in the grid pattern. On the basis of the data, the configuration and position of the streamer is also computed, and information regarding this is displayed on a screen. On the basis of these results the coverage of the measurement area may be …

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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 5, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 18, 1982
GrantedAugust 5, 1986
Term endedAugust 5, 2003
Patent numberCA 1209239 A
Classification (IPC)G01V1/38 +1 more

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedMay 18, 1982Patent grantedAug 5, 1986Term endedAug 5, 2003

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