Apparatus and method for imaging small objects in a flow stream using optical tomography
CA 2442040 C · Owner: Visiongate, Inc. · Inventors: Nelson, Alan C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flow cytometer, and at least one reconstruction cylinder are positioned around a capillary tube (2). A photon source (25) and a photon sensor (26) work together with a pulse height analyzer (27) to provide a first trigger point (28) for the beginning of an object or cell (1) and a second trigger , point (29) for the end of the cell (1). The trigger signal (28 29) is , received by the reconstruction cylinder (20). The reconstruction cylinder (20) includes optical point sources (21) having a selectable emission wavelength disposed in a geometric pattern around the cylinder perpendicular to and concentric with the capillary tube axis (9) that facilitate the acquisition of transmitted, …
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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 March 27, 2002 and granted February 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.