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Expired Canadian patentCanada

Formation and control of fluidic species

CA 2521862 C · Owner: Cheng, Zhengdong · Inventors: Cheng, Zhengdong; Link, Darren R.; Marquez-Sanchez, Manuel

CIPO record

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Abstract From the Canadian patent

This invention generally relates to systems and methods for the formation and/or control of fluidic species, and articles produced by such systems and methods. In some cases, the invention involves unique fluid channels systems, controls, and/or restrictions and combinations thereof. In certain , embodiments the invention allows fluidic streams (which can be continuous or discontinuous, i.e. droplets) to be formed and/or combined at a variety of , scales, including microfluidic scales. In one set of embodiments a fluidic , stream may be produced from a channel where a cross-sectional dimension of , the fluidic stream is smaller than that of the channel for example, through , the use 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 April 9, 2004 and granted October 16, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 9, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 9, 2004
GrantedOctober 16, 2012
Term endedApril 9, 2024
Patent numberCA 2521862 C
Classification (IPC)B01J2/04 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedApril 9, 2004Patent grantedOct 16, 2012Term endedApril 9, 2024

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.