Process for the formation of high strength bio-absorbable suture fibers and the suture produced thereby
CA 2433367 C · Owner: Ethicon, Inc. · Inventors: Chen, Gaoyuan; Egidio, Dominick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A PGA/PLA copolymer suture fiber having a fiber tenacity of between approximately 7.2 to 8.0 grams per denier and a fiber elongation between approximately 22% and 35% is produced by a process that utilizes extruder apparatus having at least one heated zone that is maintained at a temperature of from about 20°C below the copolymer melting point to about 5°C above the copolymer melting point a metering pump and a heated block that are maintained at a temperature of no more than about 40°C above the copolymer melting point a spinneret that is maintained at a temperature of from about 40°C to about 60°C above the copolymer melting point and an elongated heated sleeve extending between six and …
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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 June 25, 2003 and granted November 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2025.
- 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.