Optical tomography of small moving objects using time delay and integration imaging
CA 2499773 C · Owner: Visiongate, Inc. · Inventors: Nelson, Alan C.; Chu, Chee-Wui
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Three dimensional reconstruction of an object of interest (1) moving at a constant velocity. The object of interest (1) is centered. The object of interest (1) is imaged with optical point sources (27) located at multiple projection angles around the object of interest (1) in cooperation with , opposing time delay and integration (TDI) image sensors 825) located at a distance from the objects of interest (1) such that there in no focal plane within the objects of interest (1) during imaging. Each of the TDI sensors (25) has a line transfer rate synchronized to the constant velocity of the objects interest (1).
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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 24, 2003 and granted July 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 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
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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.