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Expired Canadian patentCanada

Antibody to smooth muscle myosin heavy chains

CA 2050941 C · Owner: Nagai, Ryozo · Inventors: Nagai, Ryozo; Kato, Hirohisa; Kuroo, Makoto

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

Using as an immunogen an oligopeptide containing a different portion of the amino acid sequence of isoform SM-l, SM-2 or SM-3 in smooth muscle myosin heavy chains, for example, the C-terminus amino acid sequence antibodies capable of distinctly recognizing each isoform from other of the smooth muscle myosin heavy chains can be obtained. The antibodies are useful as reagents for tissue staining and also useful as diagnostic reagents of vascular disturbance or arteriosclerosis.

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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 26, 1990 and granted February 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2012.
  • 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 26, 1990
GrantedFebruary 23, 1999
Term endedMarch 26, 2010
Patent numberCA 2050941 C
Classification (IPC)C07K16/18 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMarch 26, 1990Patent grantedFeb 23, 1999Term endedMarch 26, 2010

Sources & verification

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