Seismic synchronization system
CA 2260480 A1 · Owner: Western Atlas International, Inc. · Inventors: Norris, Michael W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for synchronizing a seismic system having multiple subsystems. A control system transmits a message to selected subsystems and an internal subsystem counter is zeroed to a selected epoch. Depending on the message or on, an internal instruction code, each subsystem initiates an event or sequence of events, synchronized to the selected epoch. The system is based on the relative occurrence, of cyclic events and does not depend on the transmission of an absolute time signal. The system is self rectifying, reduces systemic errors and reduces the data, transmission required for system control and operation. The system permits autonomous, asynchronous operation by a subsystem without …
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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 January 26, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.