Chelating agents
CA 2092434 A1 · Owner: Brunswick Corporation · Inventors: Wrasidlo, Wolfgang J.; Silveira, Michael H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Metal chelates and therapeutic or diagnostic conjugates of site-specific compounds, metal chelates and metal ions are described. , The metal chelates consist of at least two molecular components linked together. One molecular component is a chelate having a high affinity for metal ions and a high Ks value. The other molecular component is a chelate having a low Ks value and the ability to undergo rapid metal exchange.
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 September 26, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 26, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 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.