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Canadian application, no grantCanada

Microencapsulated catalyst, methods of preparation and methods of use thereof

CA 2453113 A1 · Owner: Shirley, Ian Malcolm · Inventors: Shirley, Ian Malcolm; Smith, Stephen Christopher; Ramarao, Chandrashekar

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A microencapsulated catalyst is prepared by dissolving or dispersing a catalyst in a first phase (for example an organic phase) dispersing the first , phase in a second continuous phase (for example an aqueous phase) to form an emulsion, reacting one or more microcapsule wall-forming materials at the interface between the dispersed first phase and the continuous second phase to form a microcapsule polymer shell encapsulating the dispersed first phase core and optionally recovering the microcapsules from the continuous phase. The catalyst is preferably a transition metal catalyst and the encapsulated catalyst may be used for conventional catalysed reactions. The encapsulated catalyst …

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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 July 9, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 9, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 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.
FiledJuly 9, 2002
GrantedNo grant recorded
Term endedJuly 9, 2022
Patent numberCA 2453113 A1
Classification (IPC)B01J13/18 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedJuly 9, 2002Term endedJuly 9, 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.