Microspheres comprising therapeutic and diagnostic radioactive isotopes
CA 2520144 C · Owner: Biosphere Medical, Inc. · Inventors: Krom, James A.; Schwarz, Alexander
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
One aspect of the present invention relates to a microsphere impregnated with a radioisotope that emits therapeutic .szlig.-particles and a radioisotope that emits diagnostic .gamma.-radiation; wherein the atomic number of the first radioisotope is not the same as the atomic number of the second radioisotope. In one preferred embodiment the microsphere is composed of , glass impregnated with 90Y as the source of the therapeutic .szlig.-emissions and 198Au as the source of the diagnostic .gamma.-emissions. Another aspect of the present invention relates to the preparation of a microsphere impregnated with a radioisotope that emits therapeutic .szlig.-particles and a radioisotope that …
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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 March 8, 2004 and granted December 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.