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Expired Canadian patentCanada

Methods for determining the biocompability of lipophilic substances in cell culture tests using nanoemulsions

CA 2264441 C · Owner: Zuelli, Fred · Inventors: Suter, Franz; Zuelli, Fred

CIPO record

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Abstract From the Canadian patent

Nanoemulsions are used for testing the cell toxicity of lipophilic substances in cell culture assays; for testing the genotoxicity of lipophilic substances in cell culture as-says; for the biotransformation of lipophilic substances by using cell cultures; promotion of cell differentiation in primary cell cultures; for completion of cell cultures with lipophilic substances promoting the cell growth; for completion of cell cultures with lipophilic substances promoting the biosynthesis of desired substances within the cells; as well as for the defined and reproducible uptake of lipophilic substances into the cells of cell cultures. Preferred nanoemulsions have oily particles of a diameter 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 March 5, 1999 and granted August 12, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 5, 1999
GrantedAugust 12, 2003
Term endedMarch 5, 2019
Patent numberCA 2264441 C
Classification (IPC)C12Q1/02 +2 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedMarch 5, 1999Patent grantedAug 12, 2003Term endedMarch 5, 2019

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