Multi-faceted surgical needle
CA 2128472 C · Owner: Sherwood Services Ag · Inventors: Allen, Richard Congdon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surgical suturing needle has a tapered needle head with a multi-faceted cross-section. The cross-section is formed by three circumferentially-spaced cutting edges formed at a primary angle and a plurality of extended legs, each extending from one of the primary angles and formed at a secondary angle. In addition a, plurality of connecting surfaces adjoin adjacent extended legs.
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 July 20, 1994 and granted December 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 20, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.