Acoustic detection apparatus
CA 1299727 C · Owner: Caulfield, David Donald · Inventors: Caulfield, David Donald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an apparatus for use in detecting the substance of an object contained within an enclosure. The apparatus is comprised of an acoustic transmitter for transmitting a pulse of acoustic energy at a first side of the enclosure. A first acoustic receiver is provided for receiving acoustic energy reflected from the object to produce a reflected acoustic energy signal. A second acoustic receiver is provided for receiving acoustic energy which has been transmitted or refracted through the object to produce a transmitted acoustic energy signal. A signal processor is connected to the transmitter and to said first and second receivers. The signal processor processes …
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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 April 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 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.