Acoustic transducer for a borehole logging tool
CA 1294894 C · Owner: Mobil Oil Corporation · Inventors: Sims, Claude Campbell
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bender acoustic transducer has a flat piezoelectric element, 26 affixed to a flat elongated inert element 27. The ends of the inert element 27 are hinged on a supporting rectangular frame 28 which has a rectangular opening. Opposite surfaces of the transducer are exposed so that when a voltage is applied a dipole, acoustic wave is generated by the transducer.
Read the whole patent
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 January 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 28, 2009.
- 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.