Collagen device and method of preparing the same
CA 2496187 C · Owner: Codman & Shurtleff, Inc. · Inventors: Shenoy, Vivek N.; Halvorsen, Matthew J.; Sommerich, Robert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A collagen device is prepared by mixing collagen with purified water for a period of time sufficient to form a mixture. The pH of the mixture is adjusted to a pH level sufficient to substantially solubilize the collagen. A first predetermined amount of the mixture is placed into a container. The mixture is subject to a lyophilizing process and formed into a collagen device. The collagen device is also cross-linked. The collagen device has a plurality of pores wherein a majority of the pores have a diameter of less than 10µm. To use the collagen device as an implant to replace reinforce or strengthen bodily tissue, or to act as an adhesion barrier the collagen device is placed in contact …
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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 February 8, 2005 and granted April 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 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.
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.