Ultrasonic holography imaging method and apparatus
CA 2124075 C · Owner: Garlick, George F. · Inventors: Dunham, Glen C.; Garlick, George F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A preferred embodiment of this invention is illustrated in Fig. 4 showing an offset and tilted object transducer (50) being rotated about a system axis (51) to sequentially insonify the object from various acute incident angles .THETA. to the system axis to provide images of the out-of focus structures at spaced locations at the hologram detection surface (18) at different spaced times. If the pulse rate of the object transducer is greater than the fusion of the eye the eye is able to average two or more images into a single perceived image. Likewise, video equipment that receives images at a rate greater than 30 Hertz will average two or more images and display the image at a rate of …
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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 November 20, 1992 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2014.
- 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.