Products and methods for brachytherapy
CA 2345620 A1 · Owner: Black, Christopher D. V. · Inventors: Snow, Robert A.; Eriksen, Morten; Black, Christopher D. V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Radioactive sources, preferably radioactive seeds for use in brachytherapy , comprising a radioisotope within a sealed biocompatible container wherein at , least one part of a surface of the container is roughened shaped or otherwise , treated so that it is no longer smooth. The surface treatment may enhance the ultrasound visibility of the source and/or reduce the tendency of the source to migrate once implanted in a patient's body. Preferred radioisotopes are palladium-103 and iodine-125.
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 November 5, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2021.
- 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.