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Expired Canadian patentCanada

Separation of proteins based on isoelectric point using solid-phase buffers

CA 2616976 C · Owner: Fortis, Frederic · Inventors: Boschetti, Egisto; Girot, Pierre; Fortis, Frederic

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Abstract From the Canadian patent

Proteins can be separated from mixtures based on their pi values, through the use of a series of chromatographic materials each comprising a solid buffer , and an ion exchange resin. Each solid buffer generates a stable pH such that , passing proteins possess a net charge and can be separated by means of an appropriate ion exchanger. In this fashion proteins from complex biological , fluids can be separated for identification and study.

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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 January 19, 2006 and granted August 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 19, 2006
GrantedAugust 28, 2012
Term endedJanuary 19, 2026
Patent numberCA 2616976 C
Classification (IPC)B01D15/08

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJan 19, 2006Patent grantedAug 28, 2012Term endedJan 19, 2026

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