Method of preparing a radioactive rhenium complex solution
CA 2086244 C · Owner: Mallinckrodt Medical, Inc. · Inventors: Panek-Finda, Helena
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method of preparing a solution of a radioactive rhenium complex by reacting at, elevated temperature a radioactive perrhenate in a substantially aqueous solution with a bone seeking ligand in the presence of a reductant and optionally an antioxidant under substantially anaerobic conditions wherein said, reaction is carried out at a pH from approximately 1.5 to approximately 5 and by heating the reaction components for at least 10 minutes at a temperature of at least 100°C. The invention further relates to a kit for performing said method.
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 2, 1991 and granted October 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 2, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 2, 2013.
- 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.