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Expired Canadian patentCanada

Amino acid-enriched plant protein reserves, particularly lysine-enriched maize .gamma.-zein, and plants expressing such proteins

CA 2242903 C · Owner: Perez, Pascual · Inventors: Alvarez, Inaki; Perez, Pascual; Torrent, Margarita

CIPO record

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Abstract From the Canadian patent

An oligonucleotide including at least one concatenation coding for a polypeptide of formula (P-K)n wherein n is an integer of at least 2, P is a proline amino acid residue K is a lysine amino acid residue, and the sign "-" is a bond particularly a peptide bond, between the two amino acid residues. The n (P-K) units are also bound together by such bonds e.g. peptide bonds.

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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 28, 1997 and granted September 25, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2019.
  • 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 28, 1997
GrantedSeptember 25, 2012
Term endedJanuary 28, 2017
Patent numberCA 2242903 C
Classification (IPC)C12N15/62 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedJan 28, 1997Patent grantedSep 25, 2012Term endedJan 28, 2017

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