Constituent layer harvesting from a centrifuged sample in a tube
CA 2058670 A1 · Owner: Levine, Robert A. · Inventors: Levine, Robert A.; Wardlaw, Stephen C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
INVENTORS: Robert A. Levine, Stephen C. Wardlaw TITLE: "CONSTITUENT LAYER HARVESTING, FROM A CENTRIFUGED SAMPLE IN A TUBE", DOCKET NO.: H-1170, ABSTRACT OF THE DISCLOSURE Constituent layers are harvested from a centrifuged multi-constituent material in an evacuated glass or clear plastic tube which contains a float. When possibly contaminated materials, such as blood, are being tested the use of an evacuated tube, allows the measurements to be made without the technician being exposed to the blood. The tubes are large enough to hold approximately one ml of blood and arefilled with an inert gas at low pressure. The floats are formed with a through bore into which cell bands to be harvested …
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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 December 31, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 31, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 31, 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
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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.