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Expired Canadian patentCanada

A calcium absorption enhancing agent and a method for producing it

CA 2394430 C · Owner: Kumagai, Hitomi · Inventors: Kumagai, Hitomi

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

There are provided a calcium absorption enhancing agent produced by subjecting a vegetable protein to at least a treatment of removing a phytate with an anion exchange resin and a deamidation treatment with a weakly acidic cation exchange resin and a method for producing it. Thereby calcium absorption enhancing agents which can be widely applied and excellent in processability can be obtained.

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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 August 29, 2000 and granted April 19, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 29, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 29, 2000
GrantedApril 19, 2011
Term endedAugust 29, 2020
Patent numberCA 2394430 C
Classification (IPC)A61K38/16 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedAug 29, 2000Patent grantedApril 19, 2011Term endedAug 29, 2020

Sources & verification

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