Expired Canadian patentCanada
Variable stiffness coils
CA 2178127 C · Owner: Target Therapeutics, Inc. · Inventors: Samson, Gene; Ken, Christopher G. M.; Chee, U. Hiram
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This is an implantable vaso-occlusive device. It is a helically wound coil having a central section along its longitudinal axis which is somewhat stiffer than at least one of its end regions.
Read the whole patent
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 June 4, 1996 and granted April 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2018.
- 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 4, 1996
GrantedApril 18, 2000
Term endedJune 4, 2016
Patent numberCA 2178127 C
Classification (IPC)A61B17/03 +2 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.