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Canadian application, no grantCanada

Method of predicting kinematics for surface multiples

CA 2308775 A1 · Owner: Dragoset, William Henry Jr. · Inventors: Dragoset, William Henry Jr.

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

Traveltimes of multiply reflected seismic events in a seismic profile or a model are determined from traveltimes for primary events. The traveltimes for the primary events may be obtained by ray tracing through a velocity model of the subsurface of by picking traveltimes from primary reflection horizons present in an actual seismic data set. The traveltimes for the primary events define a traveltime table for various combinations of source and receiver locations. The traveltime for a multiple corresponding to specified source and receiver positions is then determined by summing the traveltimes for primary events from the source to an interim point and from the interim point to the receiver: …

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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

  • Filed May 18, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 18, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 2022.
  • 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, 2000
GrantedNo grant recorded
Term endedMay 18, 2020
Patent numberCA 2308775 A1
Classification (IPC)G01V1/30 +1 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedMay 18, 2000Term endedMay 18, 2020

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