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Expired Canadian patentCanada

Support for biomedical implant device

CA 1261699 A · Owner: Asahi Kogaku Kogyo Kabushiki Kaisha · Inventors: Inoue, Masahide; Ichitsuka, Takeshi; Minoo, Osamu

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A support for a biomedical implant device in which the support has a surface layer composed of a biocompatible calcium phosphate material such a sintered hydroxyapatite with a porosity of 50 - 60% and pore size of 0.5 - 500 micrometers. Preferably, the surface layer is formed with projections or recesses of a few hundred micrometers size.

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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
  • 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
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1261699 A
Classification (IPC)A61M5/00 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedJune 8, 1987Patent grantedSep 26, 1989Term endedSep 26, 2006

Sources & verification

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