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Expired Canadian patentCanada

Implant lens and method and apparatus for its production

CA 1282555 C · Owner: Swedish Graft Technique Ab · Inventors: Bowald, Staffan F.

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

An improved implant lens is provided herein. Such implant lens is of the type in which at least the outer layer thereof consists essentially of a substantially-water-insoluble biodegradable and biocompatible material capable of providing a growth zone for the naturall eye lens tissue

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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 April 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 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.
FiledNovember 20, 1986
GrantedApril 9, 1991
Term endedApril 9, 2008
Patent numberCA 1282555 C
Classification (IPC)A61F2/16 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 20, 1986Patent grantedApril 9, 1991Term endedApril 9, 2008

Sources & verification

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