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Expired Canadian patentCanada

Diuretic peptide and gene coding same

CA 1340454 C · Owner: Nakazato, Hiroshi · Inventors: Tanaka, Shoji; Nakazato, Hiroshi; Kangawa, Kenji

CIPO record

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Abstract From the Canadian patent

A DNA fragment including a base sequence coding for a peptide occurring in rat atrium cordis and having diuretic action or a precursor of the peptide plasmids, containing the DNA fragment, microorganisms transformed with the plasmid, and a process for production of the peptide using the transformant. A new peptide consisting of 126 amino acids occurring in rat atrium cordis and a precursor thereof. The peptide has notable diuretic action and hypotensive or antihypertensive actions.

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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

  • Granted March 23, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 23, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 21, 1985
GrantedMarch 23, 1999
Term endedMarch 23, 2016
Patent numberCA 1340454 C
Classification (IPC)C12N15/16 +2 more

Timeline

Timeline From CIPO dates

19861990199419982002200620102014Application filedJune 21, 1985Patent grantedMarch 23, 1999Term endedMarch 23, 2016

Sources & verification

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