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Expired Canadian patentCanada

Remedy for bone disease containing organogermanium compound

CA 1281648 C · Owner: Asai Germanium Research Institute · Inventors: Kakimoto, Norihiro; Orimo, Hajime; Miyao, Kohei

CIPO record

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Abstract From the Canadian patent

This invention provides remedies for bone diseases characterized by comprising organogermanium compounds expressed by the following formula:, ........... (I) (wherein R1, R2 and R3 respectively denote a hydrogen atom a lower alkyl group such as a methyl or ethyl group or a, substituted or non-substituted phenyl group; X denotes a hydroxyl, O-lower alkyl or amino group; and Y denotes an oxygen or sulfur atom) as an effective ingredient. These remedies are effect for the remedy of osteoporosis.

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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 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 2008.
  • 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 8, 1987
GrantedMarch 19, 1991
Term endedMarch 19, 2008
Patent numberCA 1281648 C
Classification (IPC)A61K31/00 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJune 8, 1987Patent grantedMarch 19, 1991Term endedMarch 19, 2008

Sources & verification

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