Ocean bottom floor hydrophones and seismometers
CA 2498547 A1 · Owner: Institut Francais De Recherche Pour L'Exploitation De La Mer-Ifremer (Et Ablissement Public A Caractere Industriel Et Commercial) · Inventors: Pelleau, Pascal; Auffret, Yves
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns an ocean bottom station such as an ocean bottom hydrophone (OBH) or an ocean bottom seismometer (OBS) designed to perform in situ measurements comprising a support structure (2, 3) with positive buoyancy wherewith is associated at least one detachable ballast (4) to bring said support structure to the ocean bottom during a measurement session the support structure including at least one hydrophone (6) one data acquisition unit (7) for recording measurement data from the hydrophone and a device for releasing said detachable ballast. The invention is characterized in that the data acquisition unit (7) serves to control the releasing device in response to an acoustic …
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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 October 1, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 1, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2025.
- 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.