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Expired Canadian patentCanada

Injector for viscous materials

CA 2552966 C · Owner: Ellex Iscience, Inc. · Inventors: Mckenzie, John R.; Conston, Stanley R.; Kupiecki, David J.

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

An injector is provided to deliver microquantities of viscous materials into the body, such as the eye, for surgical purposes. The injector comprises a syringe body with a plunger disposed therein coupled to a positive displacement mechanism capable of progressively advancing the plunger to precisely deliver microquantities of materials at a constant or predetermined delivery rate.

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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 January 12, 2005 and granted October 30, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 12, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 12, 2005
GrantedOctober 30, 2012
Term endedJanuary 12, 2025
Patent numberCA 2552966 C
Classification (IPC)A61M37/00

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJan 12, 2005Patent grantedOct 30, 2012Term endedJan 12, 2025

Sources & verification

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