Resonant ultrasound spectroscopy
CA 2069097 A1 · Owner: Government Of The United States Of America As Represented By The United States Department Of Energy (The) · Inventors: Migliori, Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A resonant ultrasound spectroscopy method provides a unique characterization of an object (10) for use in distinguishing similar objects having physical differences greater than a predetermined tolerance. A resonant response spectrum is obtained for a reference object by placing excitation (14) and detection (16) transducers at any accessible location on the object. The spectrum is analyzed to determine the number of resonant response peaks in a predetermined frequency interval. The distribution of the resonance frequencies is than characterized in a manner effective to form a unique signature of the object. In one characterization, a small frequency interval is defined and stepped through …
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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 September 19, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 19, 2013.
- 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.