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Expired Canadian patentCanada

Directed assembly of functional heterostructures

CA 2449040 C · Owner: Seul, Michael · Inventors: Seul, Michael; Banerjee, Sukanta; Podual, Kairali

CIPO record

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Abstract From the Canadian patent

The present invention relates to a systematic process for the creation of functionally organized, spatially patterned assemblies polymer-microparticle composites including the AC electric field-mediated assembly of patterned self-supporting organic (polymeric) films and organic-polymer-microparticle composites of tailored composition and morphology. The present invention further relates to the incorporation of said assemblies into other structures. The present invention also relates to the application of such functional assemblies in materials science and biology. Additional areas of application include sensors, catalysts, membranes, and micro-reactors and miniaturized , format for …

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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 June 21, 2002 and granted February 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 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.
FiledJune 21, 2002
GrantedFebruary 15, 2011
Term endedJune 21, 2022
Patent numberCA 2449040 C
Classification (IPC)C40B40/00 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedJune 21, 2002Patent grantedFeb 15, 2011Term endedJune 21, 2022

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